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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While the weather today is pretty cold in the Mid-Atlantic and Northeast US with a touch of snow in some spots, a big warm up is coming by the weekend and the bulk of next week looks to be on the warm side of normal as we head towards the middle part of December. In fact, the surge of warmth expected this Saturday is likely to come with record high temperatures in much of the eastern US including along the DC-to-Philly-to-NYC corridor. Temperatures could actually soar towards the 70 degree mark in DC and Philly and climb into the middle 60’s in NYC – all well above-normal for this time of year and all would threaten record highs. This surge of record-breaking warmth will come ahead of the next strong cold front which can produce severe thunderstorms on Friday in the Mississippi Valley and even some strong thunderstorm activity later Saturday in the eastern states.
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A strong cold front will arrive in the eastern states late today and its passage will set the stage for some snow at mid-week in the Mid-Atlantic region and Northeast US. It’ll turn very windy and much milder today just ahead of the front along with a few rain showers. Temperatures will drop sharply in the overnight hours behind the front as the strong winds shift to a northwesterly direction. After a cold, dry and much less windy day on Tuesday, low pressure will push to a position off the Mid-Atlantic coastline by early Wednesday morning. The fresh cold air mass that arrives shortly following the passage of the front will maintain its ground at mid-week allowing for primarily snow in the Mid-Atlantic/Northeast US and minor accumulations are on the table.
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The weather pattern for next week looks quite active with a strong cold front arriving in the eastern states on Monday and then a low pressure system to follow at mid-week. The cold air mass that arrives early next week in the Mid-Atlantic/NE US will be reluctant to give up its ground as soon as mid-week and this could set the stage for some accumulating snow and ice in portions of the Mid-Atlantic/NE US.
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The month of December is now underway and after a seasonably chilly day on Wednesday, it’ll turn windy and noticeably milder this afternoon with temperatures making a run to 65 degrees in DC, 60 in Philly, and to 55 degrees in NYC. This warm up will be rather short-lived, however, for at least the central and northern part of the Mid-Atlantic region as the next cold front will usher in chillier air for tomorrow and the upcoming weekend. The weather pattern for next week looks quite active with a strong cold front arriving in the eastern states early and then two systems could follow – one at mid-week and the second one in the late week. The cold air mass in the northeastern states that arrives early next week will be reluctant to retreat to the north and this could result in some snow and/or ice by mid-week in portions of the Mid-Atlantic and Northeast US.
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Today remains colder-than-normal in the Mid-Atlantic/Northeast US, but conditions will be much less harsh than they were on Tuesday with little to no wind to speak of and plenty of sunshine. Milder weather pushes in on Thursday, Thanksgiving Day, but the warm up will be short-lived. Another cold air mass arrives on Friday in the northeastern quadrant of the nation and the big shopping day will become quite windy with gusts past 35 mph to go along with below-normal temperatures. It stays cold this weekend and there remains a threat for some snow in the Mid-Atlantic/Northeast US on Sunday and/or Monday.
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One cold air outbreak reached the Mid-Atlantic region late last week and another one is arriving today on increasing NW winds and a third one will arrive at the end of the week. In fact, it is possible that the only day of the next several that is at or slightly above-normal in terms of temperatures could be Thursday, Thanksgiving Day. While the overall pattern does favor additional cold air outbreaks for the Mid-Atlantic region in coming days, the chances for snow are more elusive. There is one system, however, that could become a player in about a week’s time and it will have to be monitored over the next few days for possible snow in the Sunday/Monday time frame. Looking ahead, one index known as the Madden Julian Oscillation (MJO) signals that cold air outbreaks may continue into the first half of December for the eastern half of the nation.
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