One storm system continues to impact the Mid-Atlantic/NE US today and another one will impact the same area from Monday into Tuesday. The next storm will intensify over the Lower Mississippi Valley early Monday and it will take a track to the Mid-Atlantic coastline by Tuesday afternoon. As the storm intensifies on Monday, it will generate a west-to-east swath of precipitation that will push into the Mid-Atlantic region during the morning or mid-day hours on Monday. The air is likely to be cold enough for a period of snow and/or ice at the onset and there are likely to be some accumulations before any changeover to rain; especially, from the northern and western suburbs of DC to areas near and north of the PA/MD border.
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There will be two storms to deal with in the Mid-Atlantic/NE US over the next few days with the first storm already impacting parts of the Mid-Atlantic region and another storm will impact the same area from Monday into Tuesday. The initial storm is going to be predominately a ‘plain’ rain event in the I-95 corridor and some of it will become heavy at times, but there are a few pockets of freezing rain at this hour in areas well to the north and west of Route I-95. Patchy fog may form as well in the overnight hours as the in flux of milder air moves over still cold grounds. The departure of this initial storm will result in an influx of another cold air mass at the end of the weekend and this could set the stage for some snow and/or ice on Monday at the onset of the next storm; especially, in areas north of the PA/MD border.
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Low pressure will intensify over the southeast US today and then ride up along the Atlantic seaboard tonight and Saturday. There can be occasional light rain later today out ahead of the main system, but the heavier rainfall will take place tonight and Saturday. It'll turn milder in the overnight hours with temperatures likely rising through the 40's and reaching the middle 50's on Saturday afternoon. Patchy fog may form as well in the overnight hours as the in flux of milder air moves over still cold grounds. High pressure will return for the second half of the weekend, but it’ll be quite breezy and cold on Sunday. Another storm is likely to impact the region from Monday into Tuesday and this one could have enough cold air around at the onset for a period of snow and/or ice before a likely changeover to 'plain' rain.
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There will be two storms to deal with in the Mid-Atlantic/NE US in coming days with the first storm impacting this area from Friday into Saturday and the second storm Monday into Tuesday. The initial storm will be predominately a plain rain event; however, there can be some icing at the onset early tomorrow; especially, south of the PA/MD border include the N/W suburbs of DC. By late tomorrow, enough milder air will arrive for plain rain to fall in the DC-to-Philly-NYC corridor and this can become a soaking rain event from Friday night into Saturday. The departure of the first storm will result in an influx of another cold air mass at the end of the weekend and this could set the stage for some snow and/or ice later Monday as the next storm system closes in on the area.
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There will be a couple of storms to deal with over the next several days with the first one predominately a rain event, but the second one can bring some snow and/or ice to the region early next week. High pressure will stay in control of our weather today providing us with some sunshine, but it’ll be quite cold for this time of year. Temperatures will only manage to climb into the mid 30’s this afternoon and the normal high for this date is 44 degrees (at Central Park). Low pressure will form quickly in the southeast US on Friday and it’ll bring us a soaking rain event from later tomorrow through much of Saturday. There can be some freezing rain and/or ice pellets mixed in at times during the day on Friday as the next storm gets underway. High pressure will return for the second half of the weekend, but it’ll be quite breezy and cold on Sunday. Another storm is likely to impact the region from later Monday into Tuesday and this one could have enough cold air around to produce some snow and/or ice in the region.
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Snow in the region should wind down by late morning and there will be some clearing this afternoon as high pressure moves closer from the Ohio Valley. That high will push overhead tonight and temperatures will drop into the lower 20’s for lows by early Thursday. Strong low pressure will move up along the east coast as we head towards the weekend and this is likely to produce heavy rainfall around from late Friday into early Saturday.
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A slow-moving cold front will push across the region later this afternoon and temperatures will fall through the evening hours. Showers ahead of the front will continue through the afternoon in the I-95 corridor and then enough cold air will filter into the region for a changeover to snow around or shortly after midnight. The snow will then continue into early Wednesday with some accumulations along the I-95 corridor on the order of a coating (urban areas) to 2 or 3 inches (northern/western suburbs). The snow will have a much more difficult time sticking to the asphalt roadways during this event after today’s warmth as compared with grassy surfaces, but that raises the chances for black ice during the morning commute as temperatures will be near freezing.
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A strong cold front will slowly work its way through the region late this afternoon and colder air will push in during the early evening hours. There will be occasional rain showers today ahead of the slow moving cold frontal system; primarily, during the mid-day and afternoon hours and temperatures will peak early in the mid and upper 50's. The precipitation could actually slacken off or end briefly this evening, but as a wave of low pressure forms along the frontal boundary zone, it'll then resume and likely change from rain-to-snow shortly after midnight. The snow will continue through much of the morning on Wednesday, but it can mix with rain again as it winds down around mid-day. Accumulations are likely to average out in the range of a coating to three inches with the lower amounts in the metro region and the higher amounts in the northern and western suburbs. Snow will have a more difficult time sticking to the roadways as compared with grassy surfaces, but there still can be some impact on the morning commute.
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A strong cold front is pushing across the Upper Midwest and it is the leading edge of some very cold air for this time of year (Minneapolis, for example, to drop to five degrees below zero later tonight). This frontal system will slow down in its advance to the south and east on Tuesday as it’ll become more aligned with an upper-level wind flow blowing from the southwest to the northeast. At the same time, upper-level energy will be moving to the northeast from the south-central US and it’ll ride up along the slowly advancing frontal boundary zone. As a result, precipitation will become enhanced behind the surface cold frontal system and this will lead to a rain-changing-to-snow scenario along the I-95 corridor from late Tuesday night into Wednesday morning. Accumulations are likely during this rain-to-snow event early Wednesday on the order of a coating to three inches and this should take place in the big cities as well.
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A warm front will push through the region today and it’ll turn much milder with occasional rain or drizzle and temperatures reaching the middle 50’s. A strong cold front will slowly advance towards the region on Tuesday and it’ll stay quite mild with temperatures climbing towards the 60 degree mark and there will be more shower activity. A wave of low pressure is likely to form along the cold frontal boundary zone on Tuesday night as the colder air begins to arrive and there is a likelihood for rain changing to snow and some accumulations are likely from late Tuesday night into Wednesday morning. Once that wave of low pressure passes by the northeast of here, the flood gates will open and cold air will pour into the Mid-Atlantic region. High temperatures on Thursday will struggle to reach the mid 30’s in the NYC metro region.
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