Arctic air covers much of the nation again today with a continuing tight grip on the central states where numerous daily low temperature records have been set all the way from the Dakotas to Texas and, in a few cases, monthly low temperature records have been challenged. The average temperature across the continental US earlier today was 15.0°F below the average for this time of year and, in a few spots, temperatures were between 45 and 50 degrees below the average (e.g., Nebraska, SW Missouri). Temperatures will gradually moderate over the upcoming weekend and next week promises to feature above-normal temperatures across a wide part of the nation. It is, however, quite likely that additional very cold air masses will be able to make their way from northern Canada into the central and eastern US as the month of March gets underway.
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As surface low pressure intensifies today out over the western Atlantic, a northern stream wave of energy in the upper part of the atmosphere will pass directly over the Mid-Atlantic region and this will enhance upward motion and produce quite unstable conditions. As a result, there is likely to be some snow or snow shower activity in the DC-to-Philly-to-NYC corridor and small accumulations of a coating to an inch or so are possible…watch out for slippery spots. On the backside of the departing strong low pressure, another very cold and windy (gusts to 40 mph) day is in store for the Mid-Atlantic region with well below-normal temperatures on Friday and even lower wind chill values.
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As surface low pressure intensifies today out over the western Atlantic, a northern stream wave of energy in the upper part of the atmosphere will pass directly over the Mid-Atlantic region and this will enhance upward motion and produce quite unstable conditions. As a result, there is likely to be some snow or snow shower activity in the DC-to-Philly-to-NYC corridor and small accumulations of a coating to an inch or so are possible…watch out for slippery spots. On the backside of the departing strong low pressure, another very cold and windy (gusts to 40 mph) day is in store for the Mid-Atlantic region with well below-normal temperatures on Friday and even lower wind chill values.
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As surface low pressure intensifies today out over the western Atlantic, a northern stream wave of energy in the upper part of the atmosphere will pass directly over the Mid-Atlantic region and this will enhance upward motion and produce quite unstable conditions. As a result, there is likely to be some snow or snow shower activity in the DC-to-Philly-to-NYC corridor and small accumulations of a coating to an inch or so are possible…watch out for slippery spots later today; especially, during bursts of heavier snow. On the backside of the departing strong low pressure, another very cold and windy (gusts to 40 mph) day is in store for the Mid-Atlantic region with well below-normal temperatures on Friday and even lower wind chill values.
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Arctic air covers much of the nation today with a particularly tight grip on the central states where numerous daily low temperature records have been set all the way from the Dakotas to the Rio Grande Valley region of southern Texas. The average temperature across the continental US earlier today was 15.4°F which is well below normal for this time of year and only the state of Florida could boast about warm weather conditions.
In addition to the widespread cold, accumulating snow fell yesterday across portions of the Middle Mississippi Valley and significant snow today will spread from the Tennessee Valley to the southern Mid-Atlantic region. The DC metro area will be on the northern edge of today’s “southern stream” system and can receive a coating to an inch or so; especially, across the southern suburbs. On Thursday, a “northern stream” wave in the upper atmosphere will pass right over the Mid-Atlantic region and likely result in some snow or snow shower activity in the DC-to-Philly-to-NYC corridor. The week ends with yet another very cold and windy day on Friday in the Mid-Atlantic region with well below normal temperatures and even lower wind chill values.
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Very cold conditions will persist for a little while longer, but there is light at the end of the tunnel. Temperatures will do no better today than 20 degrees for afternoon highs and should plunge later tonight to near 10 degrees for overnight lows. It stays cold on Thursday, but then the chill will fade way, and temperatures may climb to 60+ degrees for highs by the early part of next week.
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Low pressure is organizing over the northern Gulf coast this morning and it will then head in an east-northeast direction reaching the waters off the Carolina coastline by early tomorrow morning. From there, the low pressure system will continue on an east-northeast track on Thursday and undergo rapid intensification while out over the open waters of the western Atlantic Ocean. The DC metro region will be on the northern edge of this “southern stream” system today with some snow or snow shower activity likely during the afternoon hours. Small accumulations of a coating to an inch or so are likely; especially, in southern areas of the metro region…watch for slippery spots.
On Thursday, a vigorous wave of energy in the “northern stream” will pass right overhead of the Mid-Atlantic region and this will enhance upward motion and produce quite unstable conditions. As a result, there is likely to be additional snow or snow shower activity in the DC metro region on Thursday and small accumulations of a coating to an inch or so are again possible. On the heels of the low pressure, another windy and very cold day is coming to the Mid-Atlantic region on Friday, but temperatures should modify by the latter part of the weekend and the early part of next week.
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Arctic high pressure dominates the scene over the eastern 2/3rds of the nation and will continue to do so for another couple of days. Low pressure is organizing this morning over the northern Gulf region and it can produce snow showers and some ice in the area through the morning hours and small snow/ice accumulations are possible. Temperatures will begin a warming trend on Friday climbing to near 40 degrees and 60+ degree highs will be possible around here by Monday afternoon.
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Low pressure is organizing over the northern Gulf coast this morning and it will then head in an east-northeast direction reaching the waters off the Carolina coastline by early tomorrow morning. From there, the low pressure system will continue on an east-northeast track and undergo rapid intensification while out over the open waters of the western Atlantic. At the same time low pressure is intensifying rapidly off the coast on Thursday, a vigorous wave of energy in the northern jet stream will pass right overhead of the Mid-Atlantic region and this will enhance upward motion and produce quite unstable conditions. As a result, there is likely to be some snow or snow shower activity in the NYC metro region on Thursday afternoon and small accumulations of a coating to an inch or so are possible. On the heels of the low pressure, another windy and very cold day is coming to the Mid-Atlantic region on Friday, but temperatures should modify by the latter part of the weekend and the early part of next week.
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Low pressure is organizing over the northern Gulf coast this morning and it will then head in an east-northeast direction reaching the waters off the Carolina coastline by early tomorrow morning. From there, the low pressure system will continue on an east-northeast track and undergo rapid intensification while out over the open waters of the western Atlantic. At the same time low pressure is intensifying rapidly off the coast on Thursday, a vigorous wave of energy in the northern jet stream will pass right overhead of the Mid-Atlantic region and this will enhance upward motion and produce quite unstable conditions. As a result, there is likely to be some snow or snow shower activity in the Philly metro region on Thursday and small accumulations of a coating to an inch or so are possible. On the heels of the low pressure, another windy and very cold day is coming to the Mid-Atlantic region on Friday, but temperatures should modify by the latter part of the weekend and the early part of next week.
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