A weak system will push across the western states today bringing a chance of light snow here during the afternoon and evening and there can be residual snow showers on Friday morning as we close out the work week. Another and potentially stronger low pressure system is destined to reach us by the latter part of the weekend likely producing some snow around here with accumulations on the table.
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The active weather pattern of recent days will continue during the next couple of weeks across the eastern half of the nation…and that may be quite an understatement. One storm system will impact the Mid-Atlantic region this weekend with wintry precipitation favoring accumulations across the interior and likely a mixture in the big cities along I-95. Another storm system will impact a large part of the eastern half of the nation in the Tuesday/Wednesday time frame of next week and this one looks like a powerhouse. It is likely to feature very heavy rainfall, interior accumulating snows, and potentially damaging winds with power outages on the table. If that isn’t enough, there may be a couple of more systems to deal with in the eastern half of the nation by the time we get through the mid-point of January.
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Today will be another quiet one across the region, but an active southern branch of the jet stream will bring us a couple chances of snow in coming days. One (weak) system will push across the western states on Thursday bringing a chance of light snow tomorrow afternoon and evening and another one and potentially stronger one is destined to reach us by the late weekend or early part of next week. It’ll turn colder behind that second storm system with highs on Monday afternoon likely confined to the 20’s and lows early Tuesday morning around 10 degrees.
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The next couple of days will be generally quiet across the region with nearly average temperatures for this time of year. There will be some chances for snow showers mainly in the higher elevation locations, but nothing substantial or too well organized. The southern branch of the jet stream across the nation is quite active and stronger waves of low pressure are likely to have an impact by the end of the week and late in the upcoming weekend.
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A northern hemisphere stratospheric warming event that began during the latter part of November will rise to new levels within the next ten days or so and this could have important ramifications on temperatures across the central and eastern US from later January into February. Temperatures at the stratospheric level of 10 millibars will climb dramatically over the next ten days or so from about -70 degrees (Celsius) to about -25 degrees (Celsius) as warming aloft intensifies over the polar region of the northern hemisphere. The “polar vortex” that typically resides near or over the North Pole during this time of year will become displaced and “stretched” in coming days and this could unleash some high latitude cold air masses into the middle latitudes by the time we get into later January and February. In the near term, the weather pattern will be quite active across the eastern states with multiple systems to monitor during the next couple of weeks and temperatures will return to more seasonal levels.
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After yesterday’s snow, drier air will push into the region today and strong low pressure that impacted the region on Tuesday will gradually push away. Clouds should decrease and drier conditions should prevail on Thursday as well.
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