North American Weather (U.S.A & Canada)

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The Stratosphere nearly hits the deck!!

 

 

Edited February 14, 2016 by knocker

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Moist Flow Sweeping Out Record Arctic Blast over the Northeast

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A winter’s worth of cold seemed to be stuffed into this President’s Day weekend across the eastern United States. The most frigid air in years--in some places, in decades--swept across much of the Northeast from Friday into Sunday. Borne on strong northwest winds, the Arctic air had little chance to modify, which allowed subzero readings to penetrate virtually all of New England, including Nantucket Island and Provincetown, MA--a rare occurrence even in this chilly corner of the United States. Crisp sunshine allowed a feeble recovery on Sunday, but the bigger shift began on Monday with the gradual organization of a major inland storm. A precipitation shield extending from the mid-Atlantic to New England began as snow but will transition to freezing rain in many areas and eventually to heavy rain by Tuesday, as the freezing line whips northward (it was already through the D.C. area by late Monday). Further south, multiple tornadoes were reported on Monday afternoon along the central Gulf Coast as several supercell thunderstorms spun up within a larger region of severe weather.

The area most at risk of prolonged, serious icing, according to NOAA’s Weather Prediction Center, is a strip from central PA to central NY. West of the surface low, this event should deliver mostly light to moderate snow from the mid-Appalachians across western PA and NY (heaviest over western NY, where more than a foot is possible). As of late Monday, winter storm watches and warnings were plastered from northeast Georgia to Maine.

Meanwhile, Westerners are asking “What winter?”, as springlike conditions work their way eastward from California. Beneath a stout upper-level ridge, southern California is pleasantly warm but unnervingly dry, while forecasters in Phoenix, AZ, are projecting that Wednesday could be the city’s earliest 90°F day on record by a full week.

http://www.wunderground.com/blog/JeffMasters/moist-flow-sweeping-out-record-arctic-blast-over-the-northeast

[Summer Sun]

NYC will go from 3c on Friday to 14c on Saturday, 11c on Sunday then gradually turning colder again next week

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[Hotspur62]

Talk about extremes and going from winter to spring. The North Eastern parts of USA experiencing snow atm till weekend but this time next week the likes of Boston will be in mid 60s which is more akin to mid May than early March!!

Even Joe B is forecasting a scorcher of a summer for much of CONUS as El Nino weakens during the year and may turn into quite a strong La Nina by late Autumn/early winter.  

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El Niño-Related Rains Take Aim on California--and Arkansas

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The Pacific wave train set to bring a much-anticipated storm to the West Coast this weekend looks like it has a second destination in mind. Parts of the south-central U.S., especially Arkansas, are in line for what could be some of their heaviest March rains on record next week, once the Pacific storm cuts off and settles in for a spell.

Lower-elevation rains and mountain snows will push inland on Friday and Saturday from Washington to central California as the powerful Pacific jet stream slams into the coast. Initially, snow levels will be on the high side across the Sierra Nevada--above 7000 feet on Saturday--but as colder air filters in, the snow level will drop to the 3500-5000 foot range, which is good news for replenishing the critical Sierra snowpack. Many parts of the Sierra will receive one to two feet of snow by Monday, with even more across the higher peaks. As the jet stream continues plowing inland, a second wave at its base should goose the rains and mountain snows across southern California, which has missed out on many of this winter’s wet storms. Coastal SoCal can expect widespread 1-2” amounts, with 2-4” possible in the San Francisco Bay area.

https://www.wunderground.com/blog/JeffMasters/el-niorelated-rains-take-aim-on-californiaand-arkansas

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[Weather-history]

On 29 February 2016 at 11:27 AM, knocker said:

 

That's one reason I don't buy their definition of winter (winter solstice to Equinox). 

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Floods From up to 20 Inches of Rain Create State of Emergency in Louisiana

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A state of emergency has been declared by Governor John Bel Edwards for the entire state of Louisiana after a four-day deluge of rain dumped up to 20" of rain over northern portions of the state. The resulting record flooding has forced a call-up of the National Guard to help evacuate thousands of people from their homes. Five storm-related deaths have been reported since Monday--three in Louisiana and one each in Oklahoma and Texas. Hundreds of roads have been closed, including portions of two major interstate highways. One bridge collapsed on Louisiana Highway 557 in Ouchita Parish.

http://www.wunderground.com/blog/JeffMasters/floods-from-up-to-20-inches-of-rain-create-state-of-emergency-in-louis

[Summer Sun]

Heavy snow parts of the US this weekend and into next week

 

 

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Fire and Ice on the Plains: Intense Snow, Raging Blazes

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A tightly wrapped storm system produced a wild array of weather-related impacts over the Great Plains and Midwest on Wednesday, including paralyzing snowfall, severe thunderstorms, and a massive prairie fire. The most widespread problems occurred with late-season snowfall that stretched along a frontal zone from the Colorado Rockies northeast more than 1,000 miles to Michigan. Dubbed Winter Storm Selene by the Weather Channel, the heavy snow and high winds knocked out power to thousands of residents. Snow totals of a foot or more were reported in Iowa, Minnesota, South Dakota, Wisconsin, and Wyoming, according to TWC, with 31.6” falling near the mountain town of Pinecliff, CO.

https://www.wunderground.com/blog/JeffMasters/fire-and-ice-on-the-plains-intense-snow-raging-blazes