A colder pattern has become firmly established and now there is likely to be some accumulating snow in the DC and Philly metro regions during the late night and early morning hours. The NYC metro region is likely to be on the very northwest edge of the expected snow field. The greatest potential for a few inches of snow looks like it’ll be over the Delmarva Peninsula and the southern half of New Jersey where up to 3 or 4 inches are possible by later Monday morning at places like the Jersey Shore (e.g., Cape May). A potent wave in the upper atmosphere will set off the development of a surface wave of low pressure overnight and this system will likely bring the snow to much of the region late tonight and early Monday.
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A cold front passed through the region on Thursday and temperatures will drop down a notch from yesterday and the stiff winds will continue. Another cold front will push through late in the weekend and it should drop temperatures down another notch as we begin the new work week. A couple of fast-moving “clipper-type” systems could produce some snow in the Mid-Atlantic region during the early and middle parts of next week.
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A cold front will swing through the region today and it will begin a pattern change to colder that will be aided by a significant stratospheric warming event. A second frontal system will arrive late in the weekend and temperatures will take another notch down as we move into early next week. In recent years that featured a significant stratospheric warming event during the latter part of January, the month of February generally turned out to be colder-than-normal throughout the Northeast US.
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Weak high pressure builds across the region today and it should turn out to be a pretty nice day for late January. A cold front passes through the region on Thursday and this will begin a change to an overall colder weather pattern compared to our recent “thaw” period. Another cold front is likely to arrive in the region late this weekend and temperatures will take another notch to the down side. The colder weather pattern developing in the Mid-Atlantic region over the next few days looks like it’ll stick around well into the month of February.
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Strong low pressure will slowly pull away from the Mid-Atlantic coastline today and any lingering shower activity in the area will diminish as a result. The winds have dropped compared to yesterday, but can still be gusty today. The tight pressure gradient has now shifted up the coast so that the strongest winds are currently at or near the New England coastline. The storm has pulled in some colder air and the rain changed to snow or ice in many interior, higher elevation locations during the overnight hours. Weak high pressure builds across the region on Wednesday.
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The brunt of this major storm will take place between now and midnight or so although damaging wind gusts can last to the wee hours of the morning in and around the NYC metro region. Very strong high pressure in southeastern Canada is combining with a powerful storm to produce a tightening pressure gradient in the Mid-Atlantic region. This will result in potentially damaging wind gusts to 60 mph in interior locations over the next 12 hours or so and to near hurricane force at or just off the Mid-Atlantic coastline. In addition to the powerful winds, rain will become more widespread later today and fall heavily at times through the overnight hours before winding down early tomorrow. There is also a decent shot that some ice or snow mixes in with the rain all the way into the northern and western suburbs of the big cities along the I-95 corridor later today or tonight.
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Very strong high pressure in southeastern Canada is combining with an intensifying major storm system over the Tennessee Valley to produce a tightening pressure gradient in the Mid-Atlantic region. This will result in potentially damaging wind gusts past 65 mph along coastal sections of the Mid-Atlantic region (i.e., NJ, NY, Delaware) and up to 50 mph across inland locations. In fact, hurricane force winds are possible over the open waters just off of areas like Long Island, NY, NE NJ during the brunt of this storm later today into tonight. In addition to the powerful winds, rain will become more widespread later today and fall heavily at times into the overnight hours. There is also a decent chance that ice or snow mixes in with the rain later today or tonight across suburban location as colder air wraps into the system.
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Very strong high pressure in southeastern Canada will combine with an intensifying major storm system over the next 24-36 hours to produce a tightening pressure gradient in the Mid-Atlantic region. This is likely to result in potentially damaging wind gusts past 60 mph along coastal sections of the Mid-Atlantic region (i.e., NJ, NY, Delaware) and up to 50 mph across inland locations. In fact, hurricane force winds are possible over the open waters just off the coast of areas like Long Island, NY during the brunt of this storm. In addition to the powerful winds, rain will last from today right into Tuesday and will come down heavily at times. The brunt of this storm looks to be on Monday and Monday night with the combination of the strongest winds and heaviest rainfall.
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Our active weather pattern will continue over the next several days and the result will be a lot of rainfall around here. Moisture from the southern states will produce some rain in the area from later this morning into early tonight and then there is the likelihood for a major rain event early next week along with strong winds. Low pressure will strengthen near the Mid-Atlantic coastline early next week and only move slowly up the eastern seaboard. In fact, this system is likely to come in two parts with the first system spreading rain into the area from Sunday into Monday and then a second and stronger system will push more rain here on Monday night. The second system will see an influx of colder air wrapping into it and rain can change to accumulating snow in the higher elevations of interior Northeast US. There is even an outside chance that the rain changes briefly to snow around here late Monday night before the overall system finally pulls away to our northeast. A more sustained colder weather pattern begins in the eastern US later next week.
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Today is going to be the nicest weather day of the week with high pressure edging into the region, but the dry weather won’t last too long. Moisture from the southern states will produce some rain in the area later tomorrow into tomorrow night and then there is potential for a major rain event early next week. Low pressure will strengthen near the Mid-Atlantic coastline early next week and only move slowly up the eastern seaboard. This will likely result in significant rainfall for the I-95 corridor from late Sunday into early Tuesday. A colder weather pattern returns to the eastern US later next week.
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