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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Arctic chill dominates the scene today across much of the eastern two-thirds of the nation and will continue to do so during the next few days. Indeed, there were numerous daily low temperature records set this morning with a focus on the north-central states (e.g., Glasgow, MT; Bismarck, ND; Duluth, MN) where wind chills of 50 degrees below zero have been commonplace. In addition to the cold, the wintry pattern will result in a snowstorm during the next couple of days that will first hit the Middle Mississippi Valley region (e.g., northern Arkansas/southern Missouri) and then extend to the southern Mid-Atlantic region (e.g., southeastern VA, Delmarva Peninsula). There can even be some snow in the DC-to-Philly-to-NYC corridor from later tomorrow into Thursday as low pressure intensifies off the coast and a northern stream upper-level low passes overhead creating an unstable environment...small accumulations are possible. Looking ahead, though temperatures will relax later this weekend into early next week, there are signs that additional Arctic cold air outbreaks will impact the central and eastern states as we close out the month of February and begin March.
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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 few days. After a brief warm-up today, high temperatures will be reduced to the 30’s on Wednesday and no better than 30 degrees on Thursday. Overnight temperatures can drop to bitter cold levels of the low-to-middle teens by early Thursday morning across the northern part of Alabama.
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Bitter cold conditions will stick around the region for another few days, but there is light at the end of the tunnel. Temperatures will do no better today than the lower 20’s for afternoon highs and should plunge later tonight into the low-to-middle single digits for overnight lows. It stays quite cold into the late week, but then the chill will fade way, and temperatures may climb to 60 degrees for highs later in the upcoming weekend.
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