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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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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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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An active period of weather returns this weekend with warmer conditions and an increasing chance of showers and thunderstorms. Some of the rain can be heavy at times later Saturday into Saturday night before some cooler air returns early next week.
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A major storm system will pound the western states during the next couple of days and it will then trek across the nation and wreak havoc in the eastern states this weekend. In California, the rainfall in coming days will be heavy all along low-lying coastal sections from Oregon to the Mexican border, and snowfall will be measured by the foot in the Sierra Nevada Mountains. By the early part of the upcoming weekend, this same storm system will bring flooding rainfall to the Ohio and Tennessee Valleys and then significant snow is likely on Sunday across interior New York State and New England.
In the Mid-Atlantic region, there will be plenty of rainfall this weekend; however, it is likely to be preceded on the front-end by snow and accumulations are possible; especially, to the north of the PA/MD border. Cold air will pour into the eastern states following this weekend storm system and next week is indeed looking very cold across the eastern two-thirds of the nation. Low pressure is likely to gather strength in the southern states by the middle of next week aided by an influx of Gulf moisture and it could become a major east coast storm system by later Wednesday or Thursday.
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The next couple of days will be rather quiet across the region with high pressure taking control following the passage of a cold front. An active period of weather returns this weekend with warmer conditions and an increasing chance of showers and thunderstorms. Some of the rain can be heavy at times later Saturday into Saturday night before some cooler air returns early next week.
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One low pressure system is pulling away this morning and another one is following right on its heels and will end up over the eastern Great Lakes by early Thursday. There will be some snow shower activity in the Mid-Atlantic region during the next several hours and then (light) mixed precipitation late today/early tonight should change to plain rain by late tonight/early tomorrow. Another storm system will hit the Mid-Atlantic region during the weekend and it’ll have an impact on both Saturday and Saturday. At the front end, there can be a burst of snow and/or sleet later Saturday morning or mid-day...perhaps even some accumulations north of the PA/MD border...and then rain is likely on Saturday night and Sunday. In fact, some of the rain can be heavy at times which would raise some flooding concerns given the combination of the rain with melting snow. A strong cold front pushes through the Mid-Atlantic later Sunday ushering in much colder-than-normal air mass for the first half of next week. By the middle of next week, we’ll have to watch for the possibility of an east coast storm system that would have plenty of cold air to work with in the Mid-Atlantic region.
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The pattern becomes very unsettled today due to a combination of frontal systems leading to periods of rain that can get heavy at times. The threat of rain will continue tonight, tomorrow, and tomorrow night and rainfall totals can exceed a couple inches in many areas. By mid-day Thursday, a much drier air mass should push into the northern Alabama region and it’ll turn quite chilly again leading into the end of the work week.
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It stays very mild around here for another day with afternoon highs near the 70-degree mark. The weather becomes rather unsettled as well with the chance of showers and thunderstorms as we head through the next couple of days.
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It stays very mild around here for the next few days with daily highs near or slightly above the 70-degree mark. The weather becomes rather unsettled as well with an increasing chance of showers and thunderstorms as we head through the middle and latter parts of the week.
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