High pressure will move overhead today and this will cause a relaxation of the winds that buffeted the region on Wednesday. A fast-moving low pressure system will pass by to our north later tonight and it could generate a rain or snow shower in the overnight hours. Another low pressure system will approach the region on Friday night and it is likely to generate some rain shower activity on Christmas Eve and Christmas Day. Yet another low pressure system could arrive here early next week with the chance for more shower activity on Monday.
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Low pressure will strengthen off the east coast today and the pressure gradient between the departing low and a building high pressure system to our west will intensify resulting in increasing NW winds around here as the day progresses. It stays quite breezy tonight and Thursday will turn out to be a seasonably chilly day with high pressure in control. Low pressure will pass by to our north on Thursday night and its impact will likely be limited to areas north of the PA/MD border. Another low pressure system can bring some rain showers here on Christmas Day (Saturday).
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Low pressure will head up along the southeast US coastline today and its impact will largely be limited to areas to the south and east of the immediate I-95 corridor. Coastal sections of New Jersey and the Delmarva Peninsula could get a bit of rain out of this system later tonight and a late night rain, sleet or snow shower cannot be ruled out around here.. On the backside of the departing low pressure, winds on Wednesday will pick up in intensity out of the NW as another chilly air mass pushes into the region from the Great Lakes region. Fast-moving low pressure will cross the Northeast US on Thursday night and its impact will mainly be in areas to the north of the PA/MD border.
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Some of the coldest readings of the season so far this morning in the Mid-Atlantic region and it’ll remain on the chilly side today as the holiday shortened week begins. High pressure edges into the area today and then a low pressure system looks like it’ll stay just to our south and east at mid-week. A few waves of low pressure will come close to us later this week and weekend…something to monitor in coming days.
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A weak cool front has pushed through the region and its passage will shed a few degrees off temperatures, but they’ll remain above-normal for this time of year. Low pressure in the Ohio Valley will bring shower activity here later tonight and on Saturday. Following a cold frontal passage, it’ll turn colder for Sunday, Monday and Tuesday in what will be the beginnings of an overall colder weather pattern for the northern US.
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High pressure has shifted off the east coast and this will allow for a warm up on Thursday that should bring temperatures into the middle 60’s for afternoon highs. A weak cool front will push through on Thursday night and shed a couple of degrees off by Friday and then another front will arrive on Saturday. The early weekend system is likely to come with some shower activity for Friday night and Saturday and then it turns colder for Sunday and Monday. Looking ahead, it continues to look like the overall pattern will change to colder next week and beyond for much of the northern US.
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The strong storm that pounded California in recent days with heavy coastal rains and substantial higher-elevation snows is pushing into the mid-section of the nation today and it will be a high impact event over a large area. First and foremost, this low pressure system will intensify rapidly today and its pressure gradient field will tighten dramatically resulting in tremendous wind gusts of as high as 80-100 mph. Power outages have already been on the rise in the Southwest US and are likely to increase markedly later today and tonight as the storm intensifies and pushes to the north and east.
In addition, as this system pushes northeast from northeastern Colorado towards northeastern Minnesota, there will likely be a severe weather outbreak in its warm sector including the threat of tornadoes. Record high temperatures are likely to be set on the warm side of the storm over a large area. In the cold sector to the north and west of the storm, blizzard-like conditions will form later today and tonight with the combination of heavy, accumulating snow and tremendous winds. Heavy snow fell from this storm system during the past few days from the Sierra Nevada Mountains of eastern California to higher elevation locations of the interior western states such as Utah.
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High pressure will shift off the east coast later today and this will allow for a warm up on Thursday that could bring temperatures to 60+ degrees for afternoon highs. A weak cool front will push through on Thursday night, but will have little impact on temperatures. It stays mild on Saturday, but a cold front will usher in a colder air mass for the latter part of the weekend.
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The weather continues to be quiet across much of the eastern part of the nation and relatively mild for the middle portion of December. Meanwhile, a powerful storm is pounding away at California with heavy rainfall along coastal sections and heavy snows across inland, higher elevation locations. This same storm system will push into the central Plains on Wednesday and likely result in a widespread area that will experience record-breaking warmth and also powerful wind gusts of 50-60 mph. In the Mid-Atlantic region, the warmer-than-normal weather will likely peak on Thursday afternoon with temperatures climbing to 60+ degrees in the DC-Philly-to-NYC corridor. Looking ahead, there are several signals that point to a colder weather pattern for the northern US beginning early next week and this same change could also bring about a substantial cold period to eastern Europe/Russia later in the month.
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It’ll stay on the chilly side for the next couple of days as we’ll be under the influence of Canadian high pressure located across southeastern Canada. On Thursday, this system will shift to a position off the east coast and it’ll turn warmer around here with temperatures likely to reach the 65 degree mark. It’ll turn cooler behind a frontal system on Friday and then another cold front is likely to approach on Saturday with showers a good bet.
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