After yesterday’s combination of rain and snow, high pressure returns to the region for today and it’ll be cold and breezy with highs confined to the mid-to-upper 30’s. A clipper low pressure system and its associated cold front will cross the Mid-Atlantic region tomorrow night possibly generating a rain or snow shower here and then high pressure and slightly colder air returns for the end of the work week. Low pressure will ride along that frontal boundary by the early part of the weekend and there can be some accumulating snow here from Friday night into Saturday morning and the rest of the weekend to follow will be quite cold and breezy.
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A dynamic storm system is impacting the Mid-Atlantic region this morning with a changeover taking place of rain-to-sleet-to-snow and roads will quickly deteriorate after the changeover to snow takes place. The snow will come down heavily at times this morning and winds down by late morning/mid-day with 3-6 inches likely and isolated higher amounts are possible. Winds will become a big factor gusting out of the northeast as high as 40 mph. The storm will be long gone by mid-afternoon and conditions will improve markedly. High pressure takes over at mid-week with moderately cold conditions expected.
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A very dynamic storm system is headed to the Mid-Atlantic region and Northeast US and it is going to produce sleet and significant accumulating snow in many sections with an impact on at least part of the Tuesday morning commute…and “thundersnow” is even on the table. There is no real cold air established for the onset of the approaching storm so precipitation arrives this evening in the form of rain all along the immediate DC-to-Philly-to-NYC corridor. However, as the surface low intensifies off the Mid-Atlantic coastline early Tuesday, colder air will get quickly wrapped into the system from the north and west, winds will intensify, and there will be a changeover from rain-to-sleet-to-snow. Significant accumulations of snow are likely on Tuesday morning across Pennsylvania, central/northern New Jersey, and in the New York City metro region. There can even be some accumulations early tomorrow across northern Maryland and all the way into the northern and western suburbs of Washington, D.C.
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A potent storm system will push out of the Tennessee Valley later today and up the Appalachians before transferring to an intensifying coastal storm by later tonight. Rain will overspread the region this evening and then likely mix with sleet and then change over to snow by morning and continue as snow or a mix of snow and sleet on Tuesday morning. Accumulations are likely to be in the 2-5 inch range with the higher amounts across the far northern suburbs (e.g., Upper Bucks) and there can be an impact in some areas on the Tuesday AM commute. High pressure returns for the mid-week time frame with breezy and cold conditions.
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The last two days were quite mild across the Mid-Atlantic region with highs reaching the upper 50’s in many areas and even the lower 60’s in a few spots. A cold front pushed through late Saturday, but there will not be any truly cold air mass following it for the beginning of the new work week. Later Monday, an intensifying storm system will push towards the Mid-Atlantic region and with no cold air established, rain will fall initially in the DC-to-Philly-to-NYC corridor. As the storm pushes to the Mid-Atlantic coastline and intensifies, colder air will wrap into the system from the north and west later Monday night into early Tuesday. As a result, a changeover to snow is likely across Pennsylvania, central/northern NJ, and in the New York City metro region with accumulations on Tuesday morning and there will be an impact on the AM commute in many spots. A changeover to snow is less likely across the DC metro region and southern New Jersey, but even there some sleet and snow is likely to fall early Tuesday.
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The next two days will be very mild across the Mid-Atlantic region with highs reaching the upper 50’s in many areas and 60+ degrees in a few spots. A cold front pushes through later Saturday with some rain shower activity, but there will not be any truly cold air mass following it for the beginning of the new week. Later Monday, an intensifying storm system will push towards the Mid-Atlantic region and with no cold air established, rain is likely to fall in the DC-to-Philly-to-NYC corridor. As the storm pushes to the Mid-Atlantic coastline, colder air will wrap into the system from the north and west on Monday night and a changeover to snow is possible all the way down to the I-95 corridor. Accumulations of snow are on the table by early Tuesday; especially, in areas to the north of the PA/MD border.
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Milder weather will continue in the Mid-Atlantic region for the next couple of days with temperatures well up in the 50’s each afternoon. There will be a mix of clouds and sun today and mostly cloudy skies on Saturday with the chance of showers as a cold front pushes through the region. The overall weather pattern will become colder next week and the front-end of this transition is going to be accompanied by a strong storm system from later Monday into Tuesday. Given the lack of cold air at the onset, odds favor rain initially in the local area; however, colder air can wrap into the system from the north and west so there is a chance for an changeover to snow in some sections and accumulations are a possibility.
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Milder weather is on the way to the Mid-Atlantic region for the next few days with temperatures likely to peak on Saturday afternoon near 60 degrees despite featuring plenty of clouds and the good chance of showers. The overall weather pattern will change next week to colder-than-normal conditions for the central and eastern states and the front-end of this transition is likely to be accompanied by a strong storm system from later Monday into Tuesday. Given the lack of cold air at the onset, odds favor rain initially in the local area; however, colder air can wrap into the system from the north and west so there is a chance for an eventual changeover to snow in some areas. It turns quite cold and windy by the middle of next week on the backside of this storm…all part of the upcoming significant pattern change.
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All systems are go for a significant pattern change in the central and eastern US beginning next week and this change to colder-than-normal looks like it will have some staying power. In fact, an on-going stratospheric warming event suggests the upcoming pattern change to colder-than-normal can last all the way into the middle of March in the eastern half of the country. The front-end of this transition in the overall pattern is likely to come with a strong storm system in the Mid-Atlantic and Northeast US during the first half of next week. There will be a lack of cold air at the onset of this storm system which is likely to limit the chances of accumulating snow in the immediate I-95 corridor; however, significant snow will be on the table for interior, higher elevation locations of the Mid-Atlantic region and Northeast US. If this early week system fails to produce snow in the I-95 corridor, snow lovers should be happy to hear that other threats are quite likely down the road given the upcoming significant pattern change. Indeed, one such threat could take place during the President’s Day weekend.
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It stays chilly around here for the next couple of days, but milder weather is coming to end the work week and begin the weekend. Highs today and tomorrow will generally be in the 40’s, the lower 50’s are likely on Friday afternoon, and then temperatures can flirt with the 60 degree mark on Saturday although there will be plenty of clouds and likely showers. There will be a transition to a colder weather pattern early next week and low pressure is likely to bring some rain and/or snow to the Mid-Atlantic region from later Monday into Tuesday.
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