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اخبار هواشناسی آمریکای شمالی

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
زمان خبر : 24 ژانویه

Warming Winds in Southern California


After the recent run of chilly weather and much-needed moisture, warmer weather is in store for Southern California by way of mainly offshore winds.

As high pressure builds in from the west and a storm strengthens over the south-central United States, north to northeast winds will warm it up over the region into the end of the week.



High temperatures in most lowland areas of Southern California through Friday will be in the 70s and 80s. Temperatures will trend upward through the 60s farther north over interior California and in Nevada and Arizona as well, out of the mountains.

According to Western Weather Expert Ken Clark, "Two rounds of winds are in store with one continuing into Wednesday and another kicking up Friday night into Saturday."

While not likely to cause significant damage, there can be gusts up around 60 mph over the ridges and through the passes. The flow of air will allow more modest breezes in the Los Angeles area.

In the wake of the rain and snow this past weekend, Clark warns the weather pattern is getting stingy in terms of precipitation for much of the region.

"There does not seem to be any chance for precipitation through next week," Clark said.

A northward bulge in the jet stream will drive most storms into British Columbia and the Northwest states into next weekend, leaving high pressure around the Southland.

The pattern is conducive for morning fog over the Sacramento and San Joaquin valleys.

The storm responsible for the recent low-elevation rain and mountain snow over New Mexico and Colorado will trigger a new severe weather outbreak in the south-central and southeastern U.S. as the week progresses.
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
زمان خبر : 24 ژانویه

Northeast Storm: Rain for Most, Snow North


The same storm set to bring a new round of severe weather to parts of the South this week will bring mostly rain to the mid-Atlantic, but some snow to northern New England and neighboring Canada late this week.

Cold air will offer little resistance as the next storm comes calling later Thursday into Friday.

The storm will bring rain to the I-95 cities from Richmond, Va., to Boston, Mass., and along the Ohio River from Cairo, Ill., to Pittsburgh, Pa.

At the onset of the storm, a mix of wet snow, sleet and rain is possible with a coating in spots from along the southern tier of New York and the northern tier of Pennsylvania through central Massachusetts to coastal Maine.

From northeastern upstate New York to northern Maine and interior New Brunswick, there can be a few inches (up to 15 cm) of snow. Snowfall will tend to taper off moving northward over southern
Quebec away from the bulk of the storm's moisture



Not enough moisture is expected to be around to bring any substantial precipitation over the northern Ohio Valley states to southwestern Ontario.




A second storm that forms along the initial storm's cold front is likely to pass too far south and east to fling moisture into fresh cold air arriving on the scene later Friday and Friday night in the mid-Atlantic.

Instead, another lake-effect snow event will commence from west to east late in the week into the weekend from the Upper Midwest to the central Appalachians.




It is possible a disturbance rotating around in the push of arctic air over the weekend could produce patchy light snow well away from the Great Lakes in the Midwest and Northeast.
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
زمان خبر : 24 ژانویه

? Are January Tornadoes a Sign of a Bad Severe Weather Season

More than one round of thunderstorms producing tornadoes has already struck the South this January with the latest hitting the Deep South, and Alabama in particular, hard early this week.

Many people are asking whether tornadoes in January are rare and whether this is an indication of another bad year of severe weather.



Residents walk around through the debris of their neighborhood after a tornado ripped through the Trussville, Ala., area in the early hours of Monday, Jan. 23, 2012. Jefferson County sheriff's spokesman Randy Christian said the storm produced a possible tornado that moved across northern Jefferson County around 3:30 a.m., causing damage in Oak Grove, Graysville, Fultondale, Center
Point, Clay and Trussville. (AP Photo/Butch Dill)


Destructive Alabama Tornadoes Early Monday

One severe thunderstorm, known as a supercell thunderstorm to meteorologists, produced long-tracking tornadoes along its path across portions of Tuscaloosa and Jefferson counties in Alabama.

In Tuscaloosa County, Ala., EF-3 tornado damage was found in the Koffman area. Winds of the tornado were estimated to be 140 mph. Dozens of trees were uprooted, an outbuilding was destroyed, a barn was destroyed and the roof of a home was torn off.

The damage path was 0.46 of a mile long and as wide as 400 yards. Fortunately, there were no injuries or fatalities.

RELATED: Raw Footage of Serious Damage after Tornado Hit, Horrific Damage from Southern Storms

The twister downed trees before moving on to a hunting camp, overturning eight campers. Three of the campers were destroyed, and another five sustained different levels of damage. When the tornado reached Watermelon Road, it snapped three wooden transmission lines.



Destructive tornadoes touched down in Alabama on Jan. 23, 2012. Several other tornadoes were also reported in Arkansas, Mississippi and Tennessee.

The path of destruction was 0.56 of a mile long and as wide as 300 yards. Again, no one was hurt or killed by the tornado.

The hardest-hit community was Clay, Ala., in Jefferson County. The initial survey of the tornado damage found that the tornado was likely an EF-3 with estimated winds of 150 mph. Several homes were completely demolished with two deaths confirmed.

؟ Are January Tornadoes Rare

Tornadoes in January may sound out of the ordinary, but they are actually not unusual. Over the past three years, the average number of tornadoes in January is 17.

In the severe storm outbreak from this past Sunday into Monday, there was a total of 27 tornado reports. However, some of these reports were likely multiple sightings of the same tornado, so the actual number of tornadoes will be lower.

"Alabama, Mississippi and Georgia can have a severe weather season that starts as early as January," according to Expert Senior Meteorologist Dan Kottlowski.

These states are the heart of a zone referred to as "Dixie Alley," which spans from the Deep South to the Ohio Valley and is known as another hotspot for twisters besides "Tornado Alley."

"Thunderstorms commonly form when warm, humid air clashes with cooler, dry air. Since the Deep South gets plenty of humid air from the Gulf of Mexico, while getting drier air from the Plains, tornadoes can form," said AccuWeather.com Expert Senior Meteorologist Alex Sosnowski.

"Dixie Alley" is thought of as the only region of the country that has three severe weather seasons during the fall, winter and spring.

"However, it is still rare for multiple tornado outbreaks in January," pointed out Kottlowski.


Indication of Early or Bad Severe Weather Season?

"Deep cold air has not reached the Deep South yet, so the severe weather season is early," said Kottlowski.

Without cold reaching all the way into the Deep South, Gulf water temperatures are warm. Any time the wind turns out of the south, warm and humid air is easily drawn across "Dixie Alley." High humidity sets the stage for thunderstorms violent enough to produce tornadoes.

Unless deep cold air reaches the Southeast, there are probably going to be more early season severe weather outbreaks capable of producing tornadoes.

"The overall potential for tornadoes for 2012 looks the same as last year," stated Kottlowski. In 2011, there was above-normal tornadoes with a total of 1,725.
Another tornado that struck Tuscaloosa County, Ala., near Watermelon Road was determined to be an EF-2 with peak winds estimated at 115 mph.
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
زمان : 24 ژانویه

A new severe weather outbreak will cross the South this week, including the potential for a few tornadoes from Texas to Alabama.

A storm moving slowly out of the Southwest will first bring severe weather to central and South Texas today into tonight, including damaging wind gusts, large hail and perhaps a couple of tornadoes.

Meteorologist Bill Deger explains that while storms bring the risk of flash flooding in isolated areas of the Lone Star State, they will also bring much-needed rain to many areas.



The storms are not likely to lose intensity overnight in Texas.

The risk of severe thunderstorms, blinding downpours and tornadoes will continue to shift slowly eastward through Thursday.

During Wednesday, the greatest potential for damaging storms will stretch from the central Gulf Coast to much of western Louisiana. The risk area is forecast to stretch from Corpus Christi to Shreveport. Houston is in the middle of the severe weather risk Wednesday.



During Wednesday night, the severe weather risk will begin to move out of Texas and will center more on Louisiana, southern Arkansas and western Mississippi.

During Thursday and Thursday night, the area of concern for damaging thunderstorms and a few tornadoes will stretch from southern Tennessee and the southern Appalachians to southeastern Louisiana and the Florida Panhandle with Alabama smack in the middle.




The risk of flash flooding is included in all of these areas as the thunderstorms move eastward. The risk of flash flooding will also expand into part of the Ohio Valley during Thursday.

It is possible that the damaging thunderstorm threat will continue Friday over part of the Atlantic Seaboard from central Florida to southeastern Virginia.

As is sometime the case, some of the severe thunderstorms will hit after dark, raising the danger level for a quick tornado touchdown.

People are urged to monitor the storm system's progress the next few days. The actual threat time should be 12 hours or less for most locations and will be trimmed as the storms develop and the system approaches.

The weather seems quiet enough along the Gulf Coast at this time with only a zone of showers and modest thunderstorms. However, things will begin to change in Texas this afternoon, and that severe weather area is forecast to push eastward over the balance of the week
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
زمان : 24 ژانویه

Drenching, Severe Storms Begin in Texas


Some much-needed rain is headed for Texas and the Arklatex region, but it may come at the cost of some damaging thunderstorms.

There have already been a few incidents of golf ball-sized hail Tuesday in the Austin area.

The atmospheric energy that will be responsible for the drenching storms comes from the same storm system that brought appreciable rain to Southern California on Monday.

As the energy runs into warm, moist Gulf of Mexico air, showers and storms will continue to erupt tonight from central and southern Texas to southern Louisiana.



The greatest risk of tornadoes and damaging winds will extend from the Big Bend area to the central Texas coast tonight into Wednessday morning. Large hail is possible in northeastern Texas during this time.

As the energy runs into warm, moist Gulf of Mexico air, showers and storms will continue to erupt tonight from central and southern Texas to southern Louisiana.

Toward the evening hours the storms over central and southern Texas will turn severe.

Residents from near the Big Bend through the Hill Country and to the middle Gulf coast stand the greatest chance of being hit by gusty thunderstorms from west to east as the night progresses.

RELATED: New Severe Weather Risk Texas to Alabama This Week

While the primary threat from the storms will be flooding downpours and lightning strikes, a few could generate damaging wind and large hail.

Midland, San Angelo, Del Rio, San Antonio and Austin are among the cities at risk for the powerful storms into tonight.

Late tonight into Wednesday morning the storms from the Big Bend will move toward the central Texas coast. Cities likely to be in the swath of the storms during this time include Corpus Christi, Victoria and Kingsville.

As is usually the case with severe weather episodes, some storms could show a tendency to rotate and spawn a tornado. While the threat will be isolated, it only takes one twister moving over a densely-populated area to cause destruction.



Heavy rain will expand north and east overnight along with the risk of urban and flash flooding.

Central and northeastern Texas, central and northern Louisiana, as well as much of central and eastern Oklahoma, including both the Dallas-Fort Worth Metroplex and the Oklahoma City area will be in for a rainy, stormy night. In addition to the downpours in this area, there will be some thunderstorms lifting northward with the potential for large hail.

The slow-moving and training showers and storms will deliver rainfall totals of up to and locally over 2 inches, mainly along a corridor extending from near San Antonio to Tulsa.

It's not out of the question that a few spots could experience 4 inches of rain due to showers and storms repeating over the same area. Such heavy rain will easily cause minor flooding in urbanized locations, and in areas of poor-drainage.

Given already low water levels, river flooding is not anticipated. However, some dry stream beds can spring to life in a hurry. Avoid low water crossings as a precaution during the event through the middle of the week.




The heavy rain is good news for those still reeling from a prolonged, severe drought. According to the U.S. Drought Monitor, more than 62 percent of Texas is still classified as being in a 'severe' or 'exceptional' drought.

The risk of severe weather, including a few tornadoes will continue to progress eastward Wednesday and Thursday along the central Gulf Coast
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
زمان خبر : 24 ژانویه

New Northwest Storm Raises Flooding Concerns

The latest in a series of Pacific storms will bring another round of heavy rain and mountain snow to the Northwest through tonight.

Combined with melting snow from other recent storms, there will be an increased threat for flooding along some rivers and creeks in southwestern Washington and western Oregon.

Thanks to a moisture-rich onshore flow, rain from the new storm will fall heavy at times throughout the day and into early tonight from the coast inland to the I-5 corridor including in Seattle, Tacoma, Olympia, Portland, Salem and Eugene.



Most areas will receive on average 1 to 3 inches of rain by early on Wednesday, with localized amounts of up to 5 inches possible.

Additional rainfall totals from light-to-moderate rain expected to continue through Thursday will bring another half to one inch of rain in most areas.

At the very least, minor water rises can be expected along rivers and creeks on the valley floor and in the wake of the foothills as runoff from melting mountain snow combines with the drenching rain.

The Willamette Valley is especially at risk for flooding with rivers and tributaries still running high from recent storms.



Given the expected rainfall totals and runoff, flooding is very likely along many waterways draining the coast range, including the Alsea, Coquille, Nehalem, Pudding, Siletz, Tualatin and Wilson Rivers.

Rainfall should ease up for a time on Wednesday.

In addition to the rain in the lowlands, heavy snow will pile up along the Cascade Range in Washington, with up to a foot of snow expected along west-facing slopes above 4,500 feet.

As much as 3 feet will be possible above 5,000 feet through Thursday, which is great news for area ski resorts.

Interstate 90 through Snoqualmie Pass, at about 3,000 feet, will experience mainly rain. Steven's Pass, about 1,000 feet higher will experience higher snow totals, but probably not enough to force a closure.

The lower Oregon Cascades will generally have lesser amounts. Similarly light amounts will extend inland to Idaho and western Montana.

Strong winds will be another aspect to the storm, especially near the coast and over the high country.



The combination of strong winds, fluctuating temperatures and differing density of the snow cover will continue the risk of avalanches.
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
Severe Storms for Mississippi, Alabama Thursday

زمان : 25 ژانویه

Thunderstorms slamming the Arklatex today will roll eastward, reaching Mississippi, Alabama and other parts of the Deep South Thursday.

Many folks in the area are still on edge in the wake of deadly, destructive tornadoes that occurred during the early morning hours Monday. Some of the tornadoes reached EF3 strength.

During Thursday, the severe storms will push from west to east across the central Gulf Coast states spanning the wee hours of morning to the evening hours.



The storms will advance across southeastern Louisiana and much of Mississippi in the morning.

In the afternoon and evening hours, the storms will push across Alabama, the western part of the Florida Panhandle and into western Georgia.



The greatest threat from the storm will be damaging wind gusts and flash flooding. However, a few of the strongest thunderstorms can produce a short-lived tornado.

According to Severe Weather Expert Henry Margusity, "It appears the number of tornadoes during the event Thursday over the region will be much lower than the outbreak that started the week in the same area."

"There can still be a few tornadoes, but they will tend to be short-lived," Margusity added.

The nature of the storms spanning Thursday will be more of a squall line scenario, which tends to bring a band of thunderstorms with a general burst of heavy rain, hail and strong winds.

While Margusity was downplaying the magnitude of a tornado outbreak, he was not downplaying the severe thunderstorms and the risk to lives and property.

"Such a pattern can still damage roofs, topple mobile homes, cause power outages and down trees," Margusity said.



Folks should remain alert for rapidly changing weather conditions as the zone of thunderstorms advances from west to east.

The storm system and trailing cold front will grind to the East Coast. Locally severe thunderstorms are possible from northern Florida to southeastern Virginia during Friday.
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
A new blast of cold air will spread across the Great Lakes and Northeast over the weekend and early next week, triggering a round of lake-effect snow.

زمان خبر : 25 ژانویه

Cold winds will start to howl across the far northern Plains and the Upper Midwest on Friday as an arctic cold front plows across the region. Highs will reach only into the teens and 20s across parts of the Dakotas, Minnesota, Iowa, northern Wisconsin and the Upper Peninsula of Michigan.

Winds gusting to 35 mph and locally higher, AccuWeather.com RealFeel® temperatures will be colder than actual temperatures.

The bitterly cold air will spread farther south and east across the central Great Lakes and the central Plains on Saturday and into Northeast and Appalachians on Sunday.

Highs in Chicago, Milwaukee and Madison will be in the 20s by Sunday with a brisk breeze making it feel more like the teens and even single digits at times. Lows will plummet into the teens at night.



Across the interior Northeast, highs will drop to the teens and 20s on Monday with highs along the I-95 corridor in the 30s. Again, blustery winds will make it feel even colder.

It will not be a long-lived cold spell with a southerly flow expected to draw milder air toward the Midwest starting Monday. The Northeast will stay cold to start the week.

Lake-Effect Snow Machine Kicks Back On

The air will be cold enough while crossing the relatively mild water of the Great Lakes, especially since there is very little ice cover over the lakes.

Snow squalls and heavy lake-effect snow bands will start to set up late Saturday and Saturday night across the upper Great Lakes. By Sunday, the lake-effect snow machine will be in full swing across the central and eastern Great Lakes.



Motorists should prepare for sudden bursts of snow that will suddenly reduce visibility and cause roadway conditions to deteriorate rapidly. Travel along the New York Thruway, I-90, could become treacherous.

Typical lake-effect snowbelts could pick up 6-12 inches of snow.

"There could be some snow showers spreading through areas farther away from the Great Lakes over eastern Ohio, Pennsylvania and New York on Sunday," added Sosnowski. These snow showers may spread in fast and cause a quick dusting of snow that results in slick travel.

Some snow showers will continue downwind of Lake Ontario and Lake Erie on Monday
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
زمان : 25 ژانویه

Blizzard of '78: Enough Snow to Bury a House

Today marks the anniversary of the Blizzard of 1978, a storm that dumped up to 40 inches of snow across the Great Lakes and Ohio Valley region.

The snow, which began around 4:30 a.m. on Jan. 25 and lasted until the early morning hours of Jan. 27, severely impacted Ohio, Illinois, Indiana, Michigan and Kentucky.

The snowfall impaired the entire region, seriously limiting travel. The poor conditions resulted in the shutdown of the entire Ohio turnpike, a first ever for the heavily traveled interstate. The Indianapolis International Airport also shut down due to white-out conditions, stranding some 350 travelers for over three days.

The University of Notre Dame and University of Michigan closed for the first time in history.



Photo of collapsed house in Blizzard of '78 from



Those who did not venture out during the storm found themselves digging their cars and homes out from beneath massive snow drifts up to 20 feet.

AccuWeather.com Expert Senior Meteorologist Jim Andrews was in Beaver Creek, Ohio, during the Blizzard of 1978. It was one of the storms that solidified his interest in studying the weather.

"There had already been a string of three storms in the early and middle part of January. At one point, the peak snow depth was 2 feet, setting a record," said Andrews.

Before the blizzard hit, temperatures across Ohio and Michigan warmed up above freezing, so the storm began as a pouring rain late in the day.

"Within an hour, it went from raining to near-zero visibility in heavy snow," recalled Andrews.

"The rest of the night and through the next day, the wind was unbelievable. It howled and the whole house shook. I could barely see anything out the window, including houses right across the street."

"The highest snow drifts were over my head, probably 7 feet high," added Andrews. "Kids were climbing up the snow drifts after the storm ended."

Since the rain that fell at the onset of the storm was unable to penetrate the frozen ground, it seeped onto roadways and froze as thick as half a foot. It was very difficult to clear the thick ice, so travel remained tricky for several days after the blizzard.

The number of days Andrews and other students in the region were out of school was in the double digits.



Photo of the Forest Loudenslager Farm from the Marion County Historical Society.




Photo of massive snow drifts from the Marion County Historical Society.
 
Last edited:

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
Alabama Severe Storms Times Two This Week

زمان : 26 ژانویه

The second round of severe weather in less than a week is crossing Alabama today. The threat includes the possibility of a few tornadoes.



Powerful thunderstorms and flooding downpours along with a few tornadoes rolled across central and northeastern Texas on Wednesday then through Louisiana and Mississippi Wednesday night.

The storms were moving out of Mississippi and southeastern Louisiana and into Alabama this morning.

The storms today will also reach into the Florida Panhandle and western Georgia.

The strongest of the storms through the daylight hours will affect central and southeastern Alabama, the western part of the Florida Panhandle and western Georgia.

Cities in the path of potentially violent thunderstorms include Birmingham, Mobile and Montgomery in Alabama and Atlanta, Columbus and Macon in Georgia as well as Pensacola and Panama City, Fla.

The most common characteristics of this particular severe weather event continue to be damaging wind gusts and flash flooding.

According to Severe Weather Expert Henry Margusity, "It appears the number of tornadoes during the event will be much lower than the outbreak that started the week in the same area."

"There can still be a few tornadoes, but they will tend to be short-lived," Margusity added.



The nature of the storms continuing into Friday will be more of a squall line scenario, which tends to bring a band of thunderstorms with a general burst of heavy rain, hail and strong winds.

While Margusity was downplaying the magnitude of a tornado outbreak, he was not downplaying the severe thunderstorms and the risk to lives and property.

"Such a pattern can still damage roofs, topple mobile homes, cause power outages and down trees," Margusity said.



Severe Storm Risk Along Southern Atlantic Seaboard Tonight/Early Friday

Tonight, the storms will continue to push eastward and will expand northeastward.

Essentially, the risk of locally severe thunderstorms will stretch from much of North Carolina to northern Florida during the night.



North of the severe thunderstorm area, drenching rain in a short period of time can lead to isolated incidents of flash flooding in the Appalachians from southwestern Pennsylvania to northern Georgia and Alabama.

Recent Severe Weather

Many folks in Alabama and Mississippi are still on edge in the wake of deadly, destructive tornadoes that occurred during the early morning hours Monday, as well as the rounds of severe weather from last spring. Some of the tornadoes reached EF3 strength this past Monday morning.

The storms did bring much-needed rain to the Lone Star State, but at the expense of flash flooding.

Rain is also needed and will be supplied by the storms along the southern Atlantic Se
 
Last edited:

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
زمان : 26 ژانویه

A quick brush of snow will sweep eastward from the northern Plains to the Great Lakes area into the weekend.

Most states, including the Dakotas, Nebraska, Iowa and Minnesota, can expect a dusting to an inch of snow from the feature as it moves from west to east over the north-central United States.

Conditions over the Ohio Valley will range from spotty flurries to a coating.

However, a few spots farther north can pick up a bit more, especially where the largely unfrozen Great Lakes add some extra moisture.

Colder air will sweep around the wake of the nuisance storm. It could be another situation where wet areas freeze following a small amount of snow. Motorists are advised to drive with caution, due to the risk of icy areas developing with little notice.

A couple of episodes of lake-effect snow will follow the system, especially as a little disturbance drops in the storm's wake Saturday night into Sunday.



While the system is coming from Northwest, which has been hit hard with rain, ice and snowstorms over the past couple of weeks, this particular storm is rather weak.

Moving forward into next week, there will be two or three opportunities for some snowfall over portions of the northern Plains and the Midwest as the northern tier storm track becomes more active once again. At least one of those systems has a chance at putting down a swath of several inches of snow.

The details will unfold in the coming days. However, it seems the best chances for accumulating snow with the storms will be along and north of Interstate 80 from the Midwest to the Northeast.
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
Northeast Storm: Rain for Most, Snow North

زمان خبر: 26 ژانویه

The same storm set to bring a new round of severe weather to parts of the South this week will bring mostly rain to the mid-Atlantic, but some snow to northern New England and neighboring Canada late this week.

Cold air will offer little resistance as the next storm comes calling later Thursday into Friday.

The storm will bring rain to the I-95 cities from Richmond, Va., to Boston, Mass.

A few flakes of snow and a dash of sleet will fall on portions of Ohio and Indiana today. Temperatures will hover within a few degrees of freezing in this area tonight with mainly light rain. As a result motorists and pedestrians should be mindful of patches of ice.



The storm coming late Thursday into Friday will bring rain for most, snow to northern areas and a little mix in between. (Photo by Gene Krebs / Photos.com)

This same ripple can bring a spotty, light wintry mix over portions of northern Pennsylvania and upstate New York tonight.



The main storm will swing northeastward Thursday night and Friday.

A mix of wet snow, ice and rain is possible from along the southern tier of New York and the northern tier of Pennsylvania through central Massachusetts to coastal Maine Thursday night. There could be enough to produce slippery travel.

From northeastern upstate New York to northern Maine and interior New Brunswick, there can be a few inches (up to 15 cm) of snow. Snowfall will tend to taper off moving northward over southern Quebec away from the bulk of the storm's moisture.



Not enough moisture is expected to be around to bring any substantial precipitation over the northern Ohio Valley states to southwestern Ontario.



A second storm that forms along the initial storm's cold front is likely to pass too far south and east to fling moisture into fresh cold air arriving on the scene Friday night/Saturday in the mid-Atlantic. There is a chance it brushes southeastern Massachusetts with a a period of snow during Sunday.

Instead, another lake-effect snow event will commence from west to east late in the week into the weekend from the Upper Midwest to the central Appalachians.



It is possible a disturbance rotating around in the push of arctic air over the weekend could produce patchy light snow well away from the Great Lakes in the Midwest and Northeast.
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
Severe Storms Reaching I-95 Late Tonight

زمان خبر : 26 ژانویه

A line of locally severe thunderstorms and blinding downpours will grind toward the southern and mid-Atlantic coast tonight.



The gusty thunderstorms and torrential downpours may cause travel delays early Friday morning along the I-95 corridor from New York City to Jacksonville, Fla. Farther north in New England, rain, snow and wintry mix will be a hindrance Friday.

The most common characteristics of this particular severe weather event continue to be damaging wind gusts and flash flooding.

The storms rolled out of Texas Wednesday and crossed Alabama Thursday afternoon.

During this evening the storms were pushing eastward across Georgia, northern Florida and the western part of the Carolinas.



Mobile, Ala., was smacked by heavy rain and strong winds during the storms during the midday hours Thursday. A wall cloud with one of the nasty thunderstorms was observed on a Downtown Mobile webcam before noon.

Late tonight and early Friday morning the storms will reach into portions of eastern Virginia, South Jersey and the Delmarva all the way to northeastern and central Florida.

According to Severe Weather Expert Henry Margusity, "It appears the number of tornadoes during the entire event will be much lower than the outbreak that started the week over Mississippi and Alabama."

"There can still be a few tornadoes, but they will tend to be short-lived," Margusity added.



Flash flooding was occurring early Thursday afternoon in Center Point and Greensboro, Ala.

The nature of the storms continuing into Friday will be more of a squall line scenario, which tends to bring a band of thunderstorms with a general burst of heavy rain, hail and strong winds.

While Margusity downplayed the magnitude of a tornado outbreak, he was not downplaying the severe thunderstorms and the risk to lives and property.

"Such a pattern can still damage roofs, topple mobile homes, cause power outages and down trees," Margusity said.



North of the severe thunderstorm area tonight, drenching rain can lead to isolated incidents of flash flooding in the Appalachians from southwestern Pennsylvania to northern Georgia and Alabama.

A push of cooler air from the Pacific will mark and end to the rain and will allow a weak system to spread spotty light snow into the Midwest.

Recent Severe Weather

Many folks in Alabama and Mississippi were still on edge in the wake of deadly, destructive tornadoes that occurred during the early morning hours Monday, as well as the rounds of severe weather from last spring. Some of the tornadoes reached EF3 strength this past Monday morning.

The storms did bring much-needed rain to the Lone Star State, but at the expense of flash flooding.

Rain is also needed and will be supplied by the storms along the southern Atlantic Seaboard.
 

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
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3,354
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367
محل سکونت
mazandaran
Slippery Coating of Snow Marks Midwest Cold Push

زمان خبر : 27 ژانویه

Just enough snow to make slippery spots on roads and sidewalks is rolling eastward into the Midwest to start the weekend

Colder air is moving into the Midwest in waves this weekend and will be featured by little flirts of snow.

In most areas, the system into Saturday will bring a mere coating to an inch of snow. However, that is just enough to partially melt then refreeze on some untreated surfaces

.

Cool air in front of the snow will be replaced by colder air in its wake.

Minneapolis and Des Moines were just a couple of the metropolitan areas in line for a bit of snow with the system today.

During tonight, the system will spread its snow over Chicago, Milwaukee, St. Louis and Indianapolis.

Detroit, Cleveland, Dayton and Pittsburgh will get a bit of the white stuff.

While the system does not have a lot of moisture to work with and will barely bring a few flurries to some locations, gusty winds will be a trademark as colder air rolls in.

The strong winds, gusting to 50 mph in some locations, can catch up with the back end of the snow, resulting in sudden, brief poor visibility.



A push of cool air brought a brief period of snow from Ohio and western Pennsylvania to Michigan and southern Ontario this morning. However, that air is of Pacific origin and not all that cold. As a result, some of the precipitation from the new feature will fall as spotty rain or a light wintry mix over the central Plains and from near the Ohio River on south.

Even in areas where there is just enough precipitation to wet the ground, much colder air moving in tonight/Saturday can lead to icy patches, travel with care.



A second even weaker feature will swing into the Great Lakes this weekend from central Canada. While the system itself is unlikely to bring more than spotty flurries to most areas, it will cause lake-effect snow bands to shift back and forth rather quickly within the cold flow over the region.

Storm Next Week

AccuWeather.com meteorologists continue to keep an eye on the weather pattern for next week that could lead to a swath of accumulating snow from portions of the central and eastern Great Lakes to northern New England and neighboring Canada.

Since the storm is just under a week away, it is far from being set in stone. How much precipitation falls has yet to be determined since the energy from the feature is still way out over the northern Pacific Ocean at this time.

Up until that storm runs its course later next week, a series of weak, nuisance systems will swing through with teases of snow, ice and rain
 
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ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
Dry, Cooler Air Sweeping into the Northeast

زمان خبر : 27 ژانویه

In the wake of drenching rain, thunderstorms and a wintry mix in the Northeast Friday, dry, cooler air is sweeping in from the west.

We say cooler only because of where temperatures are supposed to be this time of the year. However, after such a warm start, it will feel much colder along the East Coast tonight, especially with gusty winds.

In most cases, the wind will blow the roads dry, before any icy areas develop.

Temperatures have already taken the plunge over the Appalachians, following a warm spike in the early morning hours Friday.



The pattern this weekend will favor dry weather along the Atlantic Seaboard.

There will be some minor problems in the Appalachians and eastern Great Lakes area this weekend with reinforcing shots of cold air and some bands of snow rotating through.

These mini waves of cold can produce brief, locally heavy snow shower activity both days of the weekend from the Midwest to the mountains.

While these are not likely to bring a great amount of snow, they can quickly coat roads and make for icy travel.

According to Senior Meteorologist Dave Samuel, "The snow showers on Sunday could especially hit with little notice and low visibility."

The overall pattern during much of next week is looking nothing like nasty cold is coming. However, there are signs of a larger storm rolling along late in the week that could allow much colder air to empty into the region starting next weekend.

The track and strength of this storm, as well as the magnitude and duration of the cold air in its wake, have yet to be determined.
 
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ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
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محل سکونت
mazandaran
First Major Storm of February?

زمان خبر : 27 ژانویه

AccuWeather.com meteorologists are monitoring weather patterns for next week that could allow a major storm to develop and affect the Northeast.

The storm we speak of is currently a batch of energy over the northern Pacific Ocean.

Indications are that this feature may hook up with a buckling jet stream at just the right time next week. The result could conjure up a potent storm system as it rolls out from Texas and heads to the Northeast during the second half of next week.



The same lack of sufficient, lasting cold that has prevented much (if any) snow from falling over the I-95 mid-Atlantic and southern New England this winter will likely still continue with next week's storm. Sorry, big city snow fans!



However, there may be enough cold air in front of the storm so that mostly snow falls from northern New England to upstate New York, the eastern Great Lakes and neighboring Canada.

The details of the nature of the storm, and most importantly its critical track, will unfold early next week.

If the storm develops to its full potential and cold air holds its ground, it could be the heaviest snowfall of the abysmal winter season so far for northern areas in the Northeast and part of the eastern Great Lakes.

A Pattern-Changer?

Indications are this storm will try to bring formidably cold air in its wake starting next weekend for the Midwest and Northeast. In turn, this could pave the way for future, snowier storms in the region.

The polar vortex, essentially the jet stream equivalent of the meteorological north pole, may set up shop farther south for a time around Hudson Bay, Canada, during the second week of February. From here, cold air from near the pole would have more of a free ride into the Midwest and Northeast.

During the second half of next week into next weekend, the jet stream will be shuffling around. Only once that shuffling process ceases will the nature of the pattern be revealed moving forward.

Recall that a southward shift in the jet stream during the second half of January contributed to an active storm track over the northern United States. A number of areas that had received little or no snow during the winter thus far finally got on the scoreboard. However, other than the Northwest and northern Rockies, it was nickel and dime snowfall.



Ahead of the next week's Friday storm, a swath of accumulating snow will streak eastward over the Upper Midwest, northern New England and neighboring Canada spanning Tuesday and Wednesday. Certainly this is not a major storm, but another opportunity for some snow-starved areas.

At least for a weather weenie standpoint, the pattern continues to look more interesting during February from the Midwest to the Northeast with perhaps not only cold air around, but also plenty of jet stream energy.
 
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ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
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367
محل سکونت
mazandaran
Wonderful Weekend for Much of the South

زمان خبر : 27 ژانویه

In the wake of the stormy weather this past week, the South will have a decent weekend for late January.

Folks cleaning up after damaging thunderstorms and flooding will at least have one less thing to worry about.

High pressure will slowly move eastward from Texas this weekend into early next week.

The high has swept away the storm and cold front responsible for the flooding downpours and locally severe thunderstorms.



The only trouble spots will be South Florida and the Keys, where the front's forward progress has slowed. The region can expect a couple of showers and thunderstorms to hang around Saturday. The moisture should slowly move off to the southeast Sunday.

Most areas from Texas to the southern Atlantic Seaboard can expect sunshine and near- to above-average temperatures Saturday and Sunday.



The high pressure area is allowing dry air to mix down from the north and from aloft. As a result, most areas will not have to contend with fog, which has been a rather re-occurring problem this month.

AccuWeather.com meteorologists will be watching for a storm to develop during the middle of next week near Texas.

This storm would represent the next general rain and thunderstorm-producer for the Lone Star State and other areas in the South during the second half of next week.

The severity of the storms has yet to be determined. However, there is some indication this storm system will become rather potent by the time it swings into the Northeast next Friday.

Warm, moist air will be pumped into the region from the Gulf of Mexico as next week progresses.
 
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ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
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367
محل سکونت
mazandaran
A Look Back at the Extreme Ice Storm of 2009

زمان : 27 ژانویه

"Reports of more than an inch of freezing rain abounded [during the storm] in Arkansas, Missouri, and Kentucky," Jesse Ferrell, AccuWeather meteorologist, wrote in his blog. "In fact, there was one claim of 3 inches."

According to the National Weather Service, the storm "caused Kentucky's largest power outage on record, with 609,000 homes and businesses without power across the state. Property damage was widespread, with the damage due to falling trees, large tree limbs and power lines weighed down by ice."

On the AccuWeather Facebook page, Kim Shook from Adair County, Okla., wrote that it "looked like a tornado had ripped through our little town trees power lines ect was down everywhere trees was split I believe we had received 7 inches in a 48 hr period ppl was outta power for over 2 weeks or more."

"We were out of power and water for 21 days here in West Ky.," AccuWeather Facebook fan Jennifer Brooking said.

"It was an amazing, unforgettable experience," AccuWeather Facebook fan Cary Willis from Louisville, Ky., said. "The power went out, and for hours and hours my wife and I lay in bed listening to crrrrack - crunch - thud as the limbs fell. This series of noises occurred literally every 30 to 60 seconds the entire night. But you couldn't see where the limbs were falling. In fact, you couldn't see anything in the dark, other than frequent flashes from (I guess) arcing electricity on the power lines, flashing like lightning, as well as exploding transformers."

"Trees still show scars of that event," AccuWeather Facebook fan James T Robinson Jr said. "Had out of town people ask 'when did tornado come thru?'"



Snowfall totals in inches:
Cleveland, Ohio 9.5

Mansfield, Ohio 13.0

Northeast, Pa. 14.0

Grand Valley, Pa. 16.0

Rochester, N.Y. 7.5

Cincinnati, Ohio 7.6

Windsor, Ohio 12.0

Erie, Pa. 10.8

Allentown, Pa. 3.8

Randolph, Vt. 15.5

Sunapee, N.H. 16.0

Chardon, Ohio 13.0

Buffalo, N.Y. 7.1

Portland, Maine 7.5

Philadelphia, Pa. 2.7

Photos from the storm:



5b2tbgx3jm8idd86h92.jpg

 
Last edited:

ali_kermanshah

کاربر فعال هواشناسی
کاربر فعال
تاریخ عضویت
4 اکتبر 2011
نوشته‌ها
3,354
لایک‌ها
367
محل سکونت
mazandaran
زمان خبر : 27 ژانویه

January 2012 Breaks Heat, Cold, Snow and Tornado Records

The month of January has broken records for snowfall, high temperatures and low temperatures.

There have been 70 tornadoes so far in 2012, making this the third-most active January for tornadoes on record, according to AccuWeather.com Meteorologist Adrienne Velleux.

There were nine confirmed tornadoes on Jan. 17, 2012 alone in the states of Kentucky and Indiana.

Sunnyside, Nev., reported a record temperature of 14°F for the high on Jan. 17, 2012. The prior record was 18°F set on Jan. 5, 1971.

Temperatures reported at the Fairbanks International Airport in Alaska for the month of January so far are the coldest on record since 1972. Fairbanks has averaged a temperature of 24.5 degrees below zero for the dates of Jan. 1 through Jan. 26, 2012. The previous record of 22.9 degrees below zero was set between Jan. 1 through Jan. 26, 1972.

Snowfall records for January have been broken in 23 states.

Lewis County, Wash., recorded 11.5 inches of snowfall so far this January, breaking the past record of 2 inches set in January of 2011.

Some long-standing snowfall records were broken in the states of Texas and Wyoming. Midland County, Texas, has received 10.6 inches of snow as of Jan. 26. The previous record of 5.9 inches of snow was set in 1955.

Natrona County, Wash., snowfall of 4.6 inches this January broke a 63 year record of 3 inches that had been standing since 1949.

Other areas of the U.S. have reported record-high temperatures for the month so far this January.

A 112-year record was broken in Beadle County, S.D. The record was set in January of 1900 with a high temperature of 64°F. The new record for January so far in 2012 is 65°F.

Umatilla County, Ore., set a new record of 72°F replacing the record of 71°F set in 1935.

Twin Falls, Idaho, broke a record from 1938 of 62°F, with average temperatures for the month of January so far at 63°F.

Alexandria, La., set a new high temperature record of 93°F, breaking a record of 83°F set earlier this month.

Phillips County, Mont., also broke a record high temperature by 10°F. The record of 60°F from 1992 was broken this month with a record of 70°F.

With a few more days left in January, there could be even more records broken by the month's end.
 
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