Strong NW winds have flooded the Mid-Atlantic region today with a much colder air mass compared to the past couple of days and this will set the stage for an accumulating snow event tomorrow night and Friday. After a very chilly night, clouds will increase later tomorrow as moisture begins streaming eastward from the Ohio Valley with low pressure dropping into the region from the Northern Plains. Snow should break out tomorrow night in the I-95 corridor and continue into Friday with accumulations likely for the Friday morning commute.
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The mild weather of the past few days will evaporate today as strong NW winds bring an influx of colder air following the passage of a strong cold frontal system. Winds can gust to 45 mph or so this morning as the colder air mass pours into the region. By later tomorrow, clouds will increase as moisture streams eastward across the Ohio Valley and snow is likely to break out tomorrow night and continue into Friday. Accumulations are likely in time for the Friday morning commute in the I-95 corridor and a small shift to the N and W of the expected intensifying coastal low could increase accumulations dramatically. It stays relatively cold through the upcoming weekend and there can be some more snow or snow shower activity by Saturday night from a fast-moving “clipper” low pressure system.
Looking ahead, a major warm up is coming next week into the eastern half of the nation which could bring temperatures to the 70 degree mark in the I-95 corridor region from DC-to-Philly-to-NYC.
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In rather typical fashion, March will produce some wild swings around here that could include accumulating snow late this week and 70 degrees later next week. Our mild conditions of the past couple of days in the Mid-Atlantic region will give way quickly on Wednesday to an influx of cold air following the passage of a strong cold frontal system. That front will generate periods of rain around here tonight into early Wednesday and then gusty NW winds will usher in a much colder air mass for the second half of the week. By later Thursday, moisture will begin streaming in our direction from the Midwest and snow is likely to break out during Thursday night and continue into Friday with accumulations quite possible by the Friday morning commute in DC, Philly and New York City.
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Mild weather will continue today, but big temperature changes are coming to the Mid-Atlantic region on Wednesday. A strong cold front will head towards the Mid-Atlantic region from the Midwest later today and rain will break out tonight and continue into the early morning hours on Wednesday. The rain can come down heavily at times later tonight and there can be a thunderstorm or two mixed in. Colder air will push into the Mid-Atlantic region on Wednesday following the cold frontal passage. By late in the day on Thursday, clouds will increase around here as moisture streams eastward through the Ohio Valley and into the Mid-Atlantic region associated with low pressure dropping southeastward from the northern Plains. Snow is likely to break out in the DC-to-Philly-to-NYC corridor during Thursday night and continue into early Friday with some accumulations possible by the Friday morning rush hour. The initial low pressure over the Ohio Valley will weaken and transfer its energy to a new low pressure system by early Friday near the Mid-Atlantic coastline.
Looking ahead, it'll remain relatively cold through the weekend and there can actually be more snow or snow showers on Saturday night/early Sunday from a "clipper" type of low pressure system. Beyond that, there are signs for a major warmup by the second half of next week with 70+ degrees likely in much of the Mid-Atlantic region. It'll turn colder again around here, however, by the middle of the month. Elsewhere, perhaps the biggest upcoming weather story will the pounding that California receives over the next few weeks with tons of rain in lower elevation locations and several feet of snow in the higher elevations (e.g., Sierra Mountains).
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The weather will be quite interesting this week with big changes coming to the Mid-Atlantic region around mid-week. The week is starting off quite mild with temperatures way above normal for this time of year and that mild weather will continue on Tuesday as well. By late tomorrow night, rain is likely to move into the I-95 corridor as a strong cold front approaches and that rain threat continues for the first half of Wednesday. Much colder air will pour in behind the mid-week frontal passage and then we’ll have to monitor a potential storm that should form near the Mid-Atlantic coastline on Friday. As a result of the influx of cold air and late week storm potential, accumulating snow is a threat in the DC, Philly, and New York City corridor from later Thursday night into Friday.
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A weak cool front will pass through the region today and showers are likely between late-morning and mid-afternoon. Winds will pick up and could gust past 30 mph this afternoon as partial sunshine returns. A strong front will approach from the Midwest at mid-week and additional showers are likely ahead of this frontal system late Tuesday night and early Wednesday. Colder air will follow for the latter part of the week and a storm near the southern Mid-Atlantic coastline could throw some snow our way Thursday night and early Friday.
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Today will be the coldest day of the next five. Colder air returned to the region on Thursday following the big storm at mid-week. It’ll stay relatively cold today and on Saturday, but then spring will be in the air as we close out the weekend with high temperatures reaching the 60 degree mark on Sunday. Following another mild day to start the new work week, a cold frontal passage will send temperatures slightly lower by Tuesday. Looking ahead, there might just be another heavy rain event in the Mid-Atlantic region by around the middle of the week.
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Colder air returns to the region today in the wake of yesterday’s storm riding in on increasingly strong NW winds. There can be some residual rain shower activity today and then a snow shower is possible tonight as it’ll stay somewhat unstable until high pressure builds into the region from Friday into Saturday. Looking ahead, spring-fever alert is on for Sunday as it should turn much milder and high temperatures should climb into the 50's.
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Numerous ingredients are coming together for thunderstorms to develop in the DC-to-Philly-to-NYC corridor late this afternoon and evening and some of these can reach strong-to-severe levels.
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Low pressure over the Tennessee Valley this morning will rapidly intensify today and track northward through the Ohio Valley and towards the western part of New York State. This storm will generate periods of light-to-moderate rainfall around here over the next several hours, but the main action associated with this system will occur later today and early tonight. Specifically, the rain will fall heavily at times, the winds will become quite strong, and there can be some thunderstorm activity up and down the I-95 corridor. In fact, thunderstorms may actually reach severe levels late today/early tonight anywhere along the DC-to-Philly-to-NYC corridor containing torrential rainfall, damaging wind gusts, possible hail and even isolated tornadoes. Cold air returns in the wake of this storm by tomorrow night and there can be some snow shower activity to go along with colder, very windy conditions.
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