The overall weather pattern will remain quite active during the next several days with storm threats possible in the Mid-Atlantic/Northeast US both at week’s end and again early next week. The overall weather pattern is also turning colder due in large part to significant high-latitude blocking that has developed over northern Canada/Greenland in response to recent stratospheric warming and to the likely upcoming disappearance of a stubborn ridge over the southern US.
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Fast-moving low pressure will push away from the east coast this morning and winds will increase markedly by the afternoon in the DC-to-Philly-to-NYC corridor. The increasing NW winds can gust to 40 mph from mid-day through the afternoon and they’ll stay strong tonight and on Wednesday as high pressure builds into the Mid-Atlantic region. The on-going active weather pattern will produce another storm threat by early this weekend and perhaps another one early next week, but the details will have to be ironed out over the next few days.
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The overall weather pattern will remain quite active in the Mid-Atlantic region during the next several days with one quick-moving system late tonight and there can be additional threats both early this weekend and early next week. This initial system can generate snow or rain changing to snow from late tonight into early Tuesday across portions of upstate Pennsylvania and western New Jersey and some higher-elevation spots can receive as much as 3-6 inches by daybreak. The overall weather pattern is turning colder due in large part to significant high-latitude blocking that has developed over northern Canada/Greenland and to a disappearing stubborn ridge over the southern US.
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The new work week starts off on the sunny side as high pressure edges into the Mid-Atlantic region. Low pressure passes to our north from late tonight into early Tuesday and it can bring us some late night rain showers. After highs well up in the 50’s today, temperatures will trend downward with highs generally at or below 50 degrees for the remainder of the week. Winds will be quite strong on Tuesday and Wednesday which will make it feel even colder than the actual air temperature. Low pressure may try to form near the east coast this weekend with the potential of bringing us rain and/or snow….something to monitor in coming days.
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Today will start off quiet, but that’ll change pretty dramatically by day’s end with a potent storm on the way. Strong low pressure will push towards the Great Lakes today and then grind to a halt, transfer its energy to a secondary system off the northern Mid-Atlantic coastline. The end result around here will be occasional rain from later this morning into early Saturday and sleet can mix in at times across some of the N/W suburbs. In addition, the winds will pick up in intensity and the unstable atmosphere can generate a thunderstorm or two in the region tonight as the secondary low intensifies off the coast. High pressure takes control of the weather in the area later this weekend and sticks around early next week.
Looking ahead, the overall weather pattern across much of the nation will turn colder later next week and beyond due in part to impact from a stratospheric warming event and high-latitude blocking. This colder pattern is quite likely to result in some snow opportunities for the Mid-Atlantic region.
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A very impactful storm system will slide out of the SW US later today and begin to intensify over the south-central states by later tonight. After slamming California and the southwestern states, this system will bring accumulating snow, excessive rain, and damaging ice to parts of the eastern half of the nation during the next couple of days. In addition, this system will contribute to a potential severe weather outbreak from later today into Friday across the south-central US.
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A frontal system will pass through the region later today ushering in colder air for the end of the work week. On Friday, strong low pressure will push towards the Great Lakes, grind to a halt, and transfer its energy to a secondary storm system off the northern Mid-Atlantic coastline. The result here from this pattern will be occasional rain from early Friday into early Saturday and the wind will increase noticeably as well. In addition, a thunderstorm is on the table for tomorrow night. High pressure returns to the region later in the weekend.
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Strong low pressure now over the western US will impact much of the nation in coming days with significant snows, flooding rains, damaging ice, and even a severe weather outbreak. Heavy snow continues to fall today in the higher elevations of California’s Sierra Nevada Mountains and will intensify over the Rocky Mountains States from later today into Thursday. By later tomorrow, the strong surface low will slide into the south-central US and ingredients will likely come together for a severe weather outbreak across the Mississippi and Tennessee Valleys from late tomorrow into Friday. After that, this major storm system will push towards the Great Lakes on Friday, grind to a halt as it becomes influenced by intensifying high-latitude blocking and transfer its energy to a secondary low pressure system that will form off the northern Mid-Atlantic coastline. The result will be a significant snow event late in the week across parts of the Upper Midwest and Northeast US and ice can become a serious issue as well in some sections.
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High pressure pushes into the region today generating plenty of sunshine and milder conditions. Clouds increase tonight ahead of the next frontal system and there can be some late night/Thursday morning shower activity. It stays quite mild on Thursday, but colder air pushes in for Friday as strong low pressure heads towards the Great Lakes from the south-central states. Rain is likely here on Friday as the primary low pressure system gives way to a secondary storm off the Mid-Atlantic coastline.
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As one storm begins to exit off the Northeast US coastline, another one is already impacting northern California with rain in the lower elevations and snows in the mountains. This system will become a major storm and impact much of the nation in coming days with significant snow, ice and rain all the way from California-to-New England. There is also the threat of a severe weather outbreak later in the week across the Lower Mississippi and Tennessee Valleys.
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