A major storm is going to become a multi-hazard event for much of the eastern half of the nation during the next few days. The storm will begin to unfold on Friday in the south-central US and then trek northeast to a position near the Great Lakes by Saturday evening and then over New England on Sunday. Heavy rain and severe weather is likely to take place south and east of the storm track and significant snow and ice is likely to its north and west. The impact in the I-95 corridor will be to bring unusually warm conditions this weekend with highs generally in the 60’s and there will be some rainfall, stiff winds, and perhaps a heavy thunderstorm or two.
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It’ll remain quite cold today, but the winds will be a non-factor as high pressure moves overhead and relaxes the pressure gradient in the Mid-Atlantic region. This same high pressure system will shift off the east coast on Friday and this will begin a warming trend that will intensify on Saturday. In fact, temperatures are likely to reach 65 degrees on Saturday as a SW wind stiffens on the backside of the high. A strong storm will pull out of the south-central US on Saturday and head towards the Great Lakes region. This weekend storm will become a news maker in much of the eastern half of the nation as it’ll generate significant snow and ice on its north and west sides and potential severe weather to its south and east. Rain is likely here on Saturday night and it can be accompanied by thunderstorm activity to go along with the strong SW winds and unusually mild conditions for this time of year.
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A major storm system this weekend is going to become a multi-hazard event for much of the eastern half of the nation. The storm will begin to unfold later Friday in the south-central US and then trek northeast to a position near the eastern Great Lakes by Saturday evening and then it’ll end up in New England by early Sunday. Heavy rain and severe weather is likely to take place on Saturday south and east of the storm system and significant snow and ice is likely to its north and west. The I-95 corridor region from DC-to-Philly-to-NYC will experience unusual warmth on Saturday afternoon (e.g., 65 degrees in DC) and then some rainfall and possible thunderstorms on Saturday night and Sunday.
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A cold air mass will pour into the region today follow yesterday’s fast-moving low pressure system with NW wind gusts to 40 mph or so. There is also the good chance for snow shower activity as the atmosphere will stay somewhat unstable. In fact, heavier snow squalls are possible as well which can cause a sudden drop in visibility and slick driving conditions. High pressure will drift closer in the overnight hours and winds will diminish, but temperatures by morning should be in the lower 20’s. It stays cold on Thursday although less harsh with little to no wind and then a warm up begins on Friday. That warm up will intensify dramatically on Saturday as high pressure shifts off the east coast and temperatures are likely to soar into the 60’s with some rain possible for Saturday night and Sunday.
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Low pressure is intensifying at this hour as it takes a path from the Tennessee Valley to the coastal waters of New Jersey and it will produce accumulating all along the I-95 corridor. Snow is closing in on the DC metro region and it should reach the Philly area during the mid-to-late afternoon hours and then into NYC by early tonight. While there can be rain mixed in at times in the initial stages of this event, the bulk of the precipitation in the DC-to-Philly-to-NYC corridor should be in the form of snow. General accumulations of 1-3 inches are expected from DC-to-Philly with isolated 4 inch amounts possible…slightly lesser snowfall totals are expected in NYC and Boston. Watch for slick road conditions this afternoon and tonight as the snow is likely to come down quite hard at times. In the wake of the storm, it’ll be cold and windy on Wednesday with gusts past 40 mph and snow showers and squalls are quite likely in much of the Mid-Atlantic region. The cold air mass that arrives in the wake of the storm will give way to a big warm up this weekend with the 60’s possible in the I-95 corridor.
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Low pressure will pull out of the Tennessee Valley early today and head towards the coastal waters of New Jersey by early tonight. Snow or a mix of rain and snow is likely to develop here around the mid-day hours. If the precipitation begins as a mixture, it would likely change to all snow shortly thereafter and should stay as snow in the early evening hours. Total snow accumulations of 1-3 inches are on the table for the DC metro region and surrounding suburbs with isolated 4 inch amounts possible west of the District. The low will push away from the Mid-Atlantic coastline later tonight and another cold air mass will follow on Wednesday riding in on strong NW winds. Snow shower activity is likely on Wednesday in the Mid-Atlantic and there can even be heavier snow squalls. It stays cold on Thursday, but the winds die down and then a warm up begins at the end of the week. In fact, temperatures could reach the middle 60’s on Saturday and it’s likely to rain for awhile before cooler, drier air returns late in the weekend.
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Low pressure will pull out of the Tennessee Valley early tomorrow and head towards the Mid-Atlantic coastal waters and the result is likely to be some accumulating PM snow in the DC-to-Philly-to-NYC corridor. Temperatures will be borderline in the I-95 corridor region in terms of snow versus rain on Tuesday, but odds favor snow in the metro regions and nearby suburbs or a changeover from a mix of rain and snow to all snow soon after the precipitation begins. The low will push away from coastal waters of New Jersey tomorrow night and another cold air outbreak will make it into the Mid-Atlantic region on Wednesday. Much like most recent cold air outbreaks, however, this chilly air mass will not last too long and it should give way to much milder conditions for the upcoming weekend and it’ll turn wet.
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There is a chance for some snow around here tomorrow afternoon and evening as low pressure forms over the Ohio Valley and heads towards the Delmarva Peninsula coastline. Temperatures will be borderline for tomorrow’s system in terms of rain versus snow, but odds favor mainly snow in the metro region and nearby suburbs - perhaps on the order of a coating to an inch or two. In the wake of the system, anther cold air outbreak will make it into the region at mid-week, but the new chilly air mass will be gone by the end of the week and upcoming weekend which should turn noticeably milder and wet.
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A “clipper” system will throw some snow shower activity into the northern Mid-Atlantic region late tonight and there is the chance for some additional snow later Tuesday in the I-95 corridor region from DC-to-Philly-to-NYC. On Tuesday, low pressure will pull out of the Tennessee Valley and head towards the Mid-Atlantic coastline. Temperatures will be borderline in the I-95 corridor region in terms of snow versus rain on Tuesday, but odds favor mainly snow in the immediate I-95 corridor and to points north and west of there. The low will push off the Delmarva Peninsula coastline by later Tuesday night and another cold air outbreak will make it into the Mid-Atlantic region at mid-week. Much like most recent cold air outbreaks, however, this chilly air mass will give way to much milder conditions by the upcoming weekend.
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An active weather pattern will bring multiple waves of energy across the country and into the Mid-Atlantic/NE US during the next several days, but the lack of sustainable cold air is still problematic for snow lovers. A couple different waves of energy will consolidate in the Mid-Atlantic region on Saturday and bring more rain followed by windy and colder conditions for Saturday night and Sunday. A “clipper” low pressure system will then drop southeastward on Sunday from central Canada to the Great Lakes and it could throw some snow showers into at least parts of the interior Mid-Atlantic/NE US from late Sunday night into early Monday. Finally, another system - perhaps the one with the most potential for accumulating snow in the I-95 corridor - is likely to form on Tuesday over the Ohio Valley as additional waves of upper-level energy come together. This system should be able to produce some rain and/or snow in the Mid-Atlantic region by Tuesday night. Another cold air outbreak will follow for the middle of next week, but, once again, it won’t last too long.
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