Today will turn a little bit milder in the Mid-Atlantic region as low-level winds increase in intensity from a southwesterly direction ahead of the next cold frontal system. That cold front will shift to our east later tonight and its passage will usher in another cold air mass for the latter part of the week. On Thursday, an upper-level disturbance will help to spawn the formation of low pressure in the southeastern states and this system will intensify as it moves fairly quickly to the northeast reaching the waters off of Maine by mid-day Friday. Some accumulating snow will spread across the DC-to-Philly-to-NYC corridor on Thursday night and it’ll likely come to a quick end early Friday resulting in a moderate snowfall for the region. Temperatures are likely to drop to the teens on Friday night all along the I-95 corridor in the wake of the low pressure system and another cold air blast will arrive early next week into the Mid-Atlantic region.
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The month of January got off to a very mild start in the Mid-Atlantic region this past weekend, but a strong cold frontal passage on Sunday night changed that around quite dramatically by Monday. In addition to the influx of the cold air mass, significant snow fell across parts of the region from the DC metro area to the Delmarva Peninsula to the Jersey Shore, but there was a sharp cutoff on the northern fringes with little or no snow at all in the Philly and NYC metro regions. The next threat of accumulating snow for the Mid-Atlantic region comes on Thursday night and early Friday as low pressure pushes to near the Mid-Atlantic coastline. Perhaps a bigger story, however, is the cold that appears to be on the way. An impressive cold shot will likely accompany and follow this late week system into the Mid-Atlantic region and then another cold blast is destined to arrive early next week. The blast early next week could turn out be a doozy with “single-digit” type cold…get ready for those heating bills.
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A new week, a new month, a new year, and a new weather pattern for the eastern US as winter has finally arrived. A significant snowfall continues at this hour in the region from DC-to-the-Delmarva Peninsula-to-southern New Jersey and the snow will wind down later this afternoon from west-to-east. Some snow is now being reported at Philly Airport, but for the most part, today’s storm will bypass the Philly and NYC metro regions as it slides just to their south and east. In addition to very poor road conditions in the hard hit areas, power outages have become an increasing problem given the strong winds and heavy, wet snowfall. Another threat for accumulating snow is likely to come in the Thursday night/early Friday time period and that threat could be for a more widespread part of the Mid-Atlantic region and Northeast US.
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The month of December ended with well above normal temperatures throughout the Mid-Atlantic region and the big cities of DC, Philly and NYC had no measurable snow. The new month and new year has coincided with a pattern change in the atmosphere that will bring winter weather to the eastern states including the strong likelihood for significant accumulating snow in parts of the Mid-Atlantic region with a focus on the zone from DC-to-Delmarva-to-southern New Jersey. A second winter storm is possible late this week that could result in more accumulating snow for the Mid-Atlantic region on Thursday night and Friday.
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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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There is calm right now across much of the western US, but that will begin to change dramatically over the next 24 hours or so. A series of storms will impact much of the western states for an extended period of time beginning later today and continuing right through the upcoming weekend. These storms will bring significant rainfall to low-lying coastal sections from southwest Canada to California and substantial snowfall to higher elevation inland locations to be ultimately measured by the foot in many spots. In addition, severe cold will filter southward from western Canada this weekend into the Pacific Northwest and this could result in single digit cold for places like Seattle and Portland by early next week.
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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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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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The weather this week will be quiet across much of the eastern two-thirds of the nation and relatively mild for the middle portion of December. The warmer-than-normal weather this week will likely peak on Thursday in the Mid-Atlantic region with temperatures probably reaching into the 60’s in the DC-Philly-to-NYC corridor. A different story is possible next week, however, as the overall pattern shows some signs of turning colder and potentially stormy in the northeastern part of the nation.
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The weather has been rather chilly in the Mid-Atlantic and Northeast US during the past few days, but a major league warm-up is coming on Saturday. In fact, the surge of warmth tomorrow will quite likely result in record highs in many spots including perhaps the DC, Philly and NYC metro regions. Another factor on Saturday will be the winds which will intensify substantially ahead of an incoming strong cold front perhaps gusting up to 55 mph or so. Showers are likely to accompany this frontal system on Saturday in the eastern states and there can even be some strong thunderstorm activity. It’ll turn considerably colder on Sunday following the frontal passage, but then warmer conditions will return next week. For today, the warm air will explode northward through the Mississippi Valley and a severe weather outbreak is on the table which includes the threat of tornadoes.
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