Two big storms will impact much of the nation this week in a week that features the busiest travel day of the year and, of course, the Thanksgiving Day holiday. The first system will bring about another “Denver-to-Minneapolis” snowstorm over the next couple of days – similar to a storm back in October. This system will then drag a cold front across the Mid-Atlantic/NE US later Wednesday and the winds will become quite strong – too strong for any balloons to be used in the Thursday parade in New York City. The second storm of note will become a powerhouse system in the hours before it makes landfall later tomorrow night near the Oregon/California border region. In fact, this Pacific Storm will intensify dramatically in the 24 hours preceding landfall – perhaps to what meteorologists call “bombogenesis” levels which requires a drop of 24 millibars in a 24-hour period. This second storm will bring damaging winds and heavy rain to coastal sections of Oregon/California and tremendous snows to inland higher elevation locations such as the Sierra Nevada Mountains. The second storm will trek all the way across the nation and likely result in ice and snow for the Mid-Atlantic/NE US during the upcoming weekend.
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High pressure will take control today and we’ll start off the holiday week with a couple of dry and moderately chilly days in the Mid-Atlantic region. A strong cold front will cross the northern US over the next few days and it’ll arrive here on Wednesday. Strong, cold high pressure will build into the north-central and northeast US later this week following the passage of the cold front and this will result in a windy, cold, dry Thanksgiving Day in the Mid-Atlantic region.
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High pressure will push off the coast today and a cold front will approach the area from the northwest. Ahead of the front, temperatures will climb into the 50’s, the wind will pick up, and there can be occasional showers from late-morning to late-afternoon. Skies will clear tonight, winds will diminish, and it’ll turn quite cold once again with overnight lows near 30 degrees. On Saturday, low pressure will form over the Tennessee Valley and head towards the central Appalachians and then a secondary system will intensify early Sunday near the Mid-Atlantic coastline. As a result, a cold soaking rain will overspread the region early tomorrow night and continue through Sunday morning. Some of the rain can be heavy at times around here late Saturday night and early Sunday. There is an outside chance for some snow or sleet to mix in at times during this event in the normally colder suburban locations well to the north and west.
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High pressure will continue to control the weather today and tonight and then a cold front will arrive late tomorrow. Ahead of the front, temperatures tomorrow afternoon will climb towards the 60 degree mark and there can be a few showers in the region. Low pressure over the Tennessee Valley on Saturday will head towards the Mid-Atlantic coastline by early Sunday morning. Rain is likely to overspread the region by Saturday night and continue into early Sunday with an outside chance for some snow or sleet to mix in at times in the normally colder suburban locations well to the north and west.
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A potent wave of energy in the upper part of the atmosphere will help to form low pressure over the Tennessee Valley on Saturday morning and then it will travel to the Mid-Atlantic coastline by early Sunday. Rain is likely to break out later Saturday in the I-95 corridor and continue until early Sunday at which time drier air will begin to arrive and lead to improving conditions as the weekend winds down. There will be some cold air around for the weekend system, but the best chance for snow is likely to be confined to areas far west and north of the I-95 corridor (e.g., West Virginia to western/northern PA).
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High pressure will build into the region today and the next couple of days will feature relatively quiet weather conditions in the Mid-Atlantic. The next cold front of note will arrive at the end of the week and it could come with a few showers. Temperatures ahead of the front should climb well up in the 50’s on Friday afternoon and then drop back to the 40’s this weekend following its passage. Low pressure over the Tennessee Valley on Saturday will head towards the Mid-Atlantic coastline by early Sunday. Rain is likely to overspread the region on Saturday night and continue into Sunday with an outside chance of some mixing with snow at times in normally colder suburban locations.
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Low pressure over the western Atlantic will continue to push away from the region and the next few days will be chilly, but rather quiet with high pressure building in from the Midwest. The next cold front of note will arrive at the end of the week and it could come with a few showers. Temperatures ahead of the front may climb to the upper 50’s on Friday afternoon and then drop back to the 40’s this weekend following its passage.
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Low pressure is tracking well offshore this morning and it will generate more clouds in the region along with occasional light rain or drizzle. It is not out the question that a few ice pellets mix in tonight in the normally colder suburban locations to the north and west. Temperatures will remain below-normal as we begin the new week and should remain at chilly levels for the next few days. Another cold frontal system will approach the region at the end of the week from our northwest.
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Temperatures will climb to the 50 degree mark for highs later today which is higher than the past few days, but still below-normal for the middle of November. A cold front will pass through the region tonight and its passage will knock off more than ten degrees as we begin the weekend. High pressure will build into the region early in the weekend, but then it will push offshore and low pressure will move northeastward over the western Atlantic Ocean. There is a chance that some rain backs into the region later Sunday into Monday - possibly mixed with sleet and/or snow at times - and coastal sections may have some strong winds to deal with as well as the threat for coastal flooding.
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Hundreds of daily low temperature records were set this week in the eastern two-thirds of the nation and, at several sites, the all-time low temperature for the month of November was recorded. Monthly records that have been set for November are quite impressive indeed as they’ll typically take place in the last week or so of a given month during this time of year. Computer forecast models have been somewhat mixed recently in their temperature anomaly predictions for the US during the remainder of November, but it appears to me that the colder-than-normal pattern will continue right to the end of November for much of the eastern two-thirds of the nation.
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