An Arctic frontal system will arrive in the I-95 corridor later today/early tonight and it will be accompanied by strong wind gusts, snow showers, and heavier snow squalls. Any snow squall can reduce visibilities in a hurry, put down a quick coating of snow and create dangerous driving conditions. It’ll stay windy tonight and on Thursday and it’ll turn sharply colder with some of the lowest wind chill values and temperatures so far this season in the Mid-Atlantic/NE US.
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The low pressure system that produced a wintry mix around here on Monday and Tuesday has pushed away to our northeast and an Arctic cold front will arrive here late this afternoon/early evening from our northwest. The arrival of this Arctic frontal system will be accompanied by strong wind gusts of up to 40 mph and possible snow showers…maybe even a burst of heavier snow. It’ll stay windy tonight and on Thursday as well and it’ll turn sharply colder with some of the lowest wind chill values and temperatures of the season so far in the Mid-Atlantic/NE US. The cold becomes less harsh at week’s end, but it’ll remain colder-than-normal going into the upcoming weekend.
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The low pressure system that resulted in a wintry mix of precipitation in the Mid-Atlantic/NE US over the past 24 hours or so will reach a position off the New England coastline by later today. This system will drag a cold front through the I-95 corridor by early tonight and winds will pick up as a moderately cold air mass moves into the area. Watch for icy spots later tonight as temperatures drop into the 20’s in most areas and there may still be some wet roadways. Another front will arrive in the I-95 corridor tomorrow afternoon and this front will represent the leading edge of an Arctic air mass. The arrival of the Arctic frontal system on Wednesday afternoon will be accompanied by strong wind gusts, scattered snow showers, and perhaps an isolated snow squall or two. It’ll stay windy tomorrow night and on Thursday and it’ll turn sharply colder with some of the lowest wind chill values and temperatures of the season so far in the Mid-Atlantic/NE US.
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Low pressure has moved nearby in the overnight hours and there will be occasional rain today that can still freeze on some untreated surfaces during the early morning hours in the far northern and western suburbs. Dense fog is also possible today as the slightly milder air moves on top of still relatively cold (and moist) grounds. A strong cold front will push through the region early tonight and winds will become gusty behind it and it'll stay moderately cold overnight and on Wednesday. However, an even colder air mass will charge into the region late tomorrow after the passage of an Arctic cold frontal system. That system can bring some snow shower activity to the area later tomorrow and then it'll turn windy and sharply colder tomorrow night and Thursday with the coldest wind chills (and temperatures) of the season so far. Some moderation in temperatures will return by the end of the week.
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There will be two different parts to the current winter weather event with phase one already well underway and phase two coming from later today through Tuesday morning. Phase one featured some accumulating snow south of the PA/MD border earlier today and has had very limited precipitation so far north of the Mason-Dixon Line. Phase two will involve heavier precipitation amounts from later today into tomorrow morning as low pressure heads towards the region from the Lower Mississippi Valley. This second phase will generally feature ‘plain’ rain across the immediate DC metro region, but icing will be a big concern across much of PA, northern NJ and NYC where temperatures will hover around the freezing mark throughout the night as precipitation intensities pick up.
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Low pressure will intensify today over the Lower Mississippi Valley with a cold air mass in place across the Mid-Atlantic and NE US. Snow pushed into the DC metro region well before daybreak and has mixed with sleet and rain in most areas, but temperatures continue to hover near the freezing mark in many suburbs so watch for continued slick spots on the roadways. By later this afternoon, temperatures should be above freezing in most spots with 'plain' rain and the rain will continue into tonight as low pressure approaches the area. There is still the chance for some freezing on some surfaces overnight in areas well to the north and west of the District with temperatures not too far from the freezing mark. More rain is likely on Tuesday as a cold front arrives and then a cold air mass will follow for tomorrow night and Wednesday. Even colder air will arrive for Thursday and temperatures will struggle to reach the freezing mark.
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One storm system continues to impact the Mid-Atlantic/NE US today with brisk NW winds 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 across the central Appalachians and to the southern New England coast 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 small 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. The precipitation will intensify on Monday night and with temperatures hovering near freezing north of the PA/MD border, a significant buildup of ice is on the table.
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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 will be occasional rain today out ahead of the main system and there is the chance for some icing at the onset; especially, in suburban locations to the north and west of the District. By tonight, enough milder air should arrive for ‘plain’ rain and the rain can come down hard at times into the day on Saturday. 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 wintry mix at the start before a likely changeover to 'plain' rain.
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