This cold and active weather pattern threatens to produce another storm system later this week that can have an impact from the Deep South to the eastern seaboard. Low pressure will organize over the northwestern Gulf of Mexico later this week...much farther to the south compared to the most recent storm system which originated over the central Plains. As such, there can be an impact in the Deep South and including the potential of accumulating snow from Dallas-to-Little Rock-to-Memphis and a swath of disruptive ice from Texas to the Carolinas.
After that, the low pressure system likely heads towards the eastern seaboard and the exact track will be critical as well as the timing of its intensification along the coast in determining how much impact there can be in the Mid-Atlantic region and Northeast US. A rapid intensification of the surface low along the Mid-Atlantic coastline could mean significant accumulating snow in the DC-to-Philly-to-NYC corridor from late Friday night into Saturday. However, if the system doesn’t intensify significantly until it passes to the north and east of the Mid-Atlantic region - the most likely scenario - then any snow would likely be on the light side.
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Low pressure that has produced accumulating snow today in much of the Mid-Atlantic region will shift to the western Atlantic Ocean during the next hour or so; however, it is not necessarily through with our area just yet. Snow is developing in the northwest sector of this eastward-moving storm system and this “backend” snow will impact the region from DC-to-the-Delmarva-to-southern NJ late today and early tonight and likely up across southern PA as well. In fact, there can be additional snow accumulations in some areas of up to a couple of inches before the precipitation shield finally fully departs the Mid-Atlantic region. On the backside of the storm late tonight and Tuesday, stiff NW winds will develop and can gust past 40 mph or so making it feel even colder than the actual air temperatures.
Looking ahead, this cold and active weather pattern threatens to produce another storm system late this week and weekend. This time, the location of the storm development will be way down south likely over the northwestern Gulf of Mexico by week’s end. As such, there can be an impact in the Deep South and this can even include significant accumulating snow and ice across places like Texas and Arkansas. After that, the low pressure system likely heads towards the eastern seaboard and the timing of its intensification along the coast will be critical in determining how much impact there can be in the Mid-Atlantic region and Northeast US. A quick intensification along the Mid-Atlantic coastline could mean significant accumulating snow in the DC-to-Philly-to-NYC corridor or the system may “wait” until it pushes farther to the north and east to intensify which would likely limit any big impact to eastern New England.
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The week ahead will be quite cold across the southeastern states and there can be some snow shower activity in the area today to go along with the below-normal temperatures. By late in the week, low pressure will likely try to form over the Gulf of Mexico and it can spread some rain and/or snow into the region later Friday or Saturday.
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A reinforcing surge of colder air will push into the region as we end the work week with high pressure diving to the southeast from the Northern Plains. The cooler trend will continue into Saturday with the high still in control and then low pressure intensifies over the central part of the nation on Sunday.
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A much colder-than-normal weather pattern is about to commence for the central and eastern US and it looks like it’ll be one with some staying power. In fact, this upcoming cold stretch for much of the nation may feature some extreme cold and very cold conditions may penetrate all the way into the southern states from Texas-to-Florida. In addition, there are likely to be multiple snow threats in this developing weather pattern that can impact much of the central and eastern US to go along with the expected much colder-than-normal temperatures. Next week looks particularly interesting in a period that may feature some extremely cold air and multiple threats of snow including one in the Sunday/Monday/Tuesday time frame for the Midwest and at least portions of the Mid-Atlantic. Numerous teleconnection indices support the notion of a much colder-than-normal weather pattern, and an unfolding stratospheric warming event enhances the idea that the much colder-than-normal temperature pattern can be sustained well into the month of January.
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It stays mild on Tuesday across the northern part of Alabama, but a cooling trend begins at mid-week. In fact, an overall much colder weather pattern appears to be setting up across the central and eastern US for much of the month of January and this will include the Tennessee Valley region.
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A much colder-than-normal weather pattern will set up for the central and eastern US during early January and it looks like it’ll be one with some staying power. In fact, this upcoming cold stretch for much of the nation may feature some extreme cold and very cold conditions may penetrate all the way into the Deep South from Texas-to-Florida. In addition, there are likely to be multiple snow threats in this developing weather pattern that can impact much of the central and eastern US to go along with the expected much colder-than-normal temperatures. Next week looks particularly interesting in a period that may feature multiple snow and ice threats and potentially some extremely cold air. Numerous teleconnection indices support the notion of a much colder-than-normal weather pattern, and an unfolding stratospheric warming event enhances the idea that the much colder-than-normal temperature pattern can be sustained well into the month of January.
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The new week starts off on the mild and unsettled side with highs today in the lower 60’s and there can be a shower or two. It stays mild on Tuesday, but a cooling trend begins at mid-week across the Tennessee Valley. In fact, an overall colder weather pattern appears to be setting up for at least the first half of the new month across much of the central and eastern US to include the Tennessee Valley region.
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A much colder-than-normal weather pattern will set up for the central and eastern US during early January and it looks like it’ll be one with some staying power. In fact, this upcoming cold stretch for much of the nation may feature some extreme cold and very cold conditions may penetrate all the way into the Deep South from Texas-to-Florida. In addition, there are likely to be multiple snow threats in this developing weather pattern that can impact much of the central and eastern US to go along with the expected much colder-than-normal temperatures. Next week (1/5 to 1/12) looks particularly interesting in a period that may feature multiple snow and ice threats and potentially some extremely cold air. Numerous teleconnection indices support the notion of a much colder-than-normal weather pattern, and an unfolding stratospheric warming event enhances the idea that the much colder-than-normal temperature pattern can be sustained well into the month of January.
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The lowest temperatures so far this season greeted the new week in the Mid-Atlantic region with single digits in many suburban areas along I-95 and as low as ten below in the Poconos of northeastern PA. In fact, this morning’s temperature readings were the lowest in many spots of the Mid-Atlantic since about Christmas time two years ago when a brief, but severe cold snap hit the area. An Arctic high will weaken and shift offshore tonight and then low pressure to our north will bring a period of snow and ice on Tuesday morning. While this won’t be a heavy precipitation event on Tuesday morning, a burst of snow and ice can certainly cause problems on roadways which are quite cold given the recent chill.
Looking ahead, there are plenty of signs for a cold pattern to emerge in January with a deepening trough of low pressure likely to form over the eastern states. This upcoming cold pattern is likely to have some staying power as well given the development of strong high-latitude blocking across Canada. Numerous teleconnection indices support the notion of a cold pattern in January for much of the central and eastern US. In addition, given the potential positioning of the trough in the central and eastern US, the southern branch of the jet stream may very well become quite active which enhances the chance for snowstorms in an overall cold pattern.
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