A widespread outbreak of Arctic air continues to grip the nation and today may feel the worst in the Mid-Atlantic region as strong winds will produce wind chill values in the single digits at times. In addition to the unusual cold and wind, instability in the upper atmosphere is already generating snow shower activity in upstate Pennsylvania and New York and some of these can make it into the DC-to-Philly-to-NYC corridor later today with an isolated snow squall even possible. The next low pressure system to monitor will trek across the nation over the next 48 hours and reach the Mid-Atlantic region on Friday. Snow may break out in the I-95 corridor during the mid-day or afternoon hours on Friday and there can be some small accumulations from this system. Another system will bring mainly rain to the Mid-Atlantic region on Sunday, but it may be cold enough at the onset for sleet and/or freezing rain in some interior higher elevation locations.
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The big weather story this week is the widespread Arctic air outbreak that has dropped temperatures to well below-normal levels in the Tennessee Valley. Temperatures around here will be well below normal for another day, but a warming trend will begin on Thursday. In fact, by late in the week and this weekend, temperatures will again reach the mid 60’s, but with the warm up will come an increased chance of showers and thunderstorms.
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The big weather story this week will is the widespread Arctic air outbreak that has dropped temperatures to well below-normal levels across the eastern half of the nation. Temperatures here today will be confined to the 40 degree mark for highs and the lows late tonight will approach the 20 degree mark some twenty degrees above the normal low for this time of year.
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The big weather story this week will be the widespread Arctic air outbreak that will result in much of the eastern 2/3rds of the nation being way below normal for the early part of March. Temperatures here will be confined to the upper 30’s today for highs and the lows over the next couple of nights will bottom out near 20 degrees across much of the region.
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A big change to colder is coming to much of the nation as we push into the early part of the month of March. After a couple of days of mild weather and occasional showers and thunderstorms, colder air will begin dropping southeastward across the Plains. This cold air mass for this time of year will make its way into the Tennessee Valley by the early part of next week. As a result, the first half of next week is liable to feature high temperatures in the 40’s at best and 30’s at worst and snow showers are on the table.
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A big change to colder is coming to much of the nation as we push into the early part of the month of March. After a couple of days of mild weather and occasional showers, colder air will begin dropping southeastward across the Plains. This cold air mass for this time of year will makes its way into the Tennessee Valley by the early part of next week. As a result, the first half of next week is liable to feature high temperatures in the 40’s and snow showers are on the table.
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March may come in like a lion…a cold lion…as about 2/3rds of the nation will be well below normal for early March with the cold wave extending from the Rockies to the New England coastline and to the Gulf coast. In addition, the calendar turn from February to March will be accompanied by an active weather pattern with multiple waves of energy and an accumulating snow threat in the I-95 corridor late tomorrow night/early Friday and another wintry event possible late in the weekend.
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Drier air in the upper part of the atmosphere will result in a nice day today across the Tennessee Valley. However, another system will swing out of the Rockies later today and arrive here by early tomorrow increasing the chance for showers and thunderstorms. Rain chances will diminish tomorrow night as the system heads towards the east coast. Much colder air will arrive in the Tennessee Valley this weekend and the first week of March looks to be well below normal in much of the nation.
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After a break in the action from the recent wet weather pattern to start the new week, clouds will increase today and the threat for showers will return later tonight and continue for the next few days in the Tennessee Valley. To go along with the increasing chance of showers, it’ll turn quite mild with highs not far from 65 degrees during the next few days. A cooling trend will begin early this weekend and then a strong cold frontal passage will bring very chilly air for early March to the Tennessee Valley later in the weekend and for the early part of next week.
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A strong upper-level ridge of high pressure will build into the region early this week from the Northern Plains. This system will lead to rather seasonable conditions in the Tennessee Valley and a generally quiet weather pattern for the first half of the week. Later in the week, surface high pressure will move to the east allowing for a return flow of more humid air and an increase chance for showers.
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