An active weather pattern will continue across much of the nation during the next few days and indeed it is likely to last right through the upcoming New Year’s Day weekend. A huge difference in temperatures currently exists across the country from northwest-to-southeast and it is helping to fuel this activity with multiple low pressure systems to deal with as we head into the new year. A strong storm system on Saturday could have wide-ranging impacts from rainy, unusually mild conditions in much of the eastern US, severe weather in the Lower Mississippi and Tennessee Valleys, and accumulating snow from Colorado to Michigan. There is a chance that a follow-up storm takes place at the end of the weekend in the eastern US as sharply colder air pushes in from the northwest….something to monitor closely in coming days.
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“Red sky in the morning…sailors warning”. The overall weather pattern for the final week of the year will be quite active with multiple systems impacting the region. The week begins with red skies this morning and indeed this is a warning that some wintry precipitation is coming later today as low pressure approaches the Mid-Atlantic region. Additional low pressure systems will come our way for the mid and late week time periods bringing some rain shower activity. The weekend could feature a much stronger low pressure system in the eastern US sandwiched between warmer air to the south and east and colder air to the north and west.
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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 few snow showers 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 rain or snow showers 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 be a seasonably chilly day with high pressure in control. Low pressure will pass by to our north on Thursday night and it could generate a few snow showers across Pennsylvania. Another 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 it could produce some rain and/or snow shower activity across parts of Pennsylvania.
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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 and it’ll be on the chilly side during this event. Following a cold frontal passage, it’ll turn even 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 to 60 degrees 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 the 60 degree mark for afternoon highs. A weak cool front will push through on Thursday night and shed a few degrees off by Friday and then another front will arrive on Saturday. The weekend system is likely to come with some shower activity and then it should turn cooler for Sunday.
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