Low pressure will intensify along the Mid-Atlantic coastline on Thursday and the result will be a rainy day in the DC-to-Philly-to-NYC corridor along with chilly conditions. Much colder air will flood the Northeast US and Mid-Atlantic region later Thursday night and Friday and this Arctic blast will be accompanied by a strong wave of energy in the upper atmosphere. As a result, Friday is likely to feature windy and cold conditions along with the possibility of snow showers in the Philly metro region. The cold will stick around as we begin the weekend, but it’ll turn noticeably milder on Sunday to go along with plenty of sunshine.
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Even though spring “officially” gets underway on Wednesday, there are still plenty of cold air masses around the northern hemisphere and – if the timing is just right – there can be some significant wintry weather in the Northeast US and even in the Mid-Atlantic region in coming days. This time of year is notorious for slow-moving and powerful storms and there are signs that two such systems may have an interaction with some impressive cold air outbreaks. The first event of interest will take place from Thursday into Friday and it will actually feature two separate strong waves of energy in the upper atmosphere. Soaking rain is likely to take place on Thursday in the DC-to-Philly-to-NYC corridor as a result of the first wave of energy and then the second wave will combine with an Arctic frontal system on Friday to generate windy and cold conditions in the Northeast US/Mid-Atlantic and likely numerous snow showers perhaps even some snow squall activity.
Another strong and slow-moving system will cross the country this weekend and potentially arrive in the Mid-Atlantic region early-to-mid next week at the same time another cold air mass dives southeastward from central Canada towards this region. It looks like this rather volatile weather pattern with strong and slow-moving storm systems will continue into the early part of April along with up and down temperature swings.
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High pressure will control the weather around here for the next couple of days and it’ll remain rather chilly in the Mid-Atlantic region for this time of year. A cold front will approach the region late Wednesday night and Thursday at the same time low pressure intensifies near the Mid-Atlantic coastline. As a result, Thursday is likely to feature occasional rain and what may turn out to be quite a decent rainfall for the region. A strong secondary cold front will arrive on Friday as intensifying low pressure slowly pulls away to the northeast and the last day of the work week may feature windy and cold conditions with possible snow showers perhaps even a heavier snow squall. Cold weather will stick around at the start of the upcoming weekend, but Sunday promises to be noticeably milder.
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A "clipper" low pressure will pull away later this morning and high pressure will take control of our weather and we’ll experience below-normal temperatures and dry conditions through mid-week. A cold front will approach the region from the north later in the week and it’ll turn slightly milder ahead of it.
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The warm up that began yesterday will continue today as a cold frontal system in the Ohio Valley heads east and towards the Mid-Atlantic. Temperatures today will climb into the 60’s, but there will also be occasional showers mainly after noon and perhaps a strong thunderstorm or two. It’ll turn colder and dry this weekend following the passage of the west-to-east moving cold frontal system. A "clipper" system will then drop southeastward across the Mid-Atlantic region late Sunday night into early Monday and it can generate some snow showers in DC, Philly and across southern PA, northern MD and southern NJ.
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A big warm up will commence today as southwesterly flow in the lower atmosphere intensifies ahead of the next cold frontal system. That front will generate showers around here later tonight and during much of Friday and there can be a couple of thunderstorms mixed in as well. Temperatures today should make it to 60 degrees and then the mid 60’s are likely by tomorrow afternoon. Following the frontal passage tomorrow evening, it’ll turn colder for the weekend and each weekend day should feature some sunshine.
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All the ingredients are coming together for rapid intensification today of low pressure as it pulls out of Colorado and moves into western Kansas. In fact, the central barometric pressure of this intensifying low pressure system could bottom out near 28.67 inches later today and some spots may very well reach record low levels; especially, across Colorado and Kansas. The combination of a strong “negatively-tilted” wave of energy in the upper atmosphere, sharp low-level temperature gradient, and powerful jet streaks in the atmosphere will help generate this powerhouse storm system that will have wide ranging impacts from blizzard conditions to its north and west to extreme winds and potential severe thunderstorms on its south and east side.
Wind gusts are likely to surpass hurricane-force levels later today in a wide part of the nation from New Mexico/Texas to southern Nebraska and perhaps even to 90+ mph in places like Colorado and Kansas. These extreme wind gusts are unfortunately likely to result in widespread power outages, downed or damaged trees and very difficult travel conditions. Blizzard warnings have been posted all the way from Colorado to Minnesota/North Dakota for the expected heavy snowfall and extremely strong winds.
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Clouds will increase later today as it turns a bit milder and the warm up will intensify on Thursday and Friday ahead of the next cold frontal system. Showers are likely to accompany the frontal system from late tomorrow night through Friday and there can be a thunderstorm or two mixed in. Following the frontal passage, it’ll turn colder this weekend and each weekend day should feature some sunshine.
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Colder air moved into the region late Monday and today will turn out to be a brisk and somewhat colder-than-normal day in the Philly metro region. After a clear and cold night, clouds will increase here later tomorrow and then it'll turn even milder on Thursday with a shower threat by nightfall. Showers are likely on Friday just ahead of a cold frontal passage with temperatures likely well up in the 60's and an isolated thunderstorm is on the table. The weekend looks dry from this vantage point, but it’ll turn colder following the late week passage of a cold frontal system.
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All in all, the upcoming week looks to be quieter than recent weeks and relatively mild except for perhaps a brief downturn on Tuesday. High pressure takes control of our weather pattern today following the passage of an overnight cold frontal system. The air mass for today will be relatively mild, but it’ll turn colder for Tuesday and then a rebound begins on Wednesday. By the end of the work week, temperatures could reach into the 60’s, but showers are likely associated with the next cold frontal passage.
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