High pressure will generally dominate the scene in the Mid-Atlantic/Northeast US during the first half of the week, but then a complex low pressure storm system will dominate the scene later in the week. An upper-level trough of low pressure will push into the central US by mid-week and then deepen by later Thursday as it slides into the Mid-Atlantic/Northeast US. At this point, the deep upper-level trough will become quite a slow-mover and “forced” to rotate around the northeastern states for a few days thanks to intense blocking high pressure to the north that will be centered over the northeastern part of Canada. At the surface level, an initial low pressure system will push into the Great Lakes region, and then a secondary low will form somewhere near the northern Mid-Atlantic coastline during the latter part of the week.
The end result here will be occasional (and very beneficial) rain from later tomorrow into early Thursday and there can be a thunderstorm or two mixed into the picture as a strong cold front pushes through the area. In fact, this is likely to be the most significant rainfall event in several weeks for this area with 0.75” to 1.25” on the table. Occasional “instability” rain showers will be possible from Thursday afternoon through Friday night as the atmosphere remains quite unstable given the strong upper-level trough that will rotate around the northeastern states for awhile. As colder air becomes better established, snow and ice pellets can mix in with the “wraparound” showers from later Thursday through Friday and look for significant accumulating snow across portions of upstate NY to the north and west of here.
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Quite an active and somewhat unusual weather pattern is developing across North America and one that will feature multiple intense upper-level ridges of high pressure and deep troughs of low pressure. One result of this overall pattern will be a powerful storm system that will slam into the Pacific Northwest from later tomorrow into Wednesday. This storm will feature explosive intensification with as much as a 70 millibar drop in 24 hours of its central pressure yielding the strength of a “category 4” hurricane and easily classifying it as a “bomb cyclone”. Another significant storm system will develop in this active weather pattern during the late week bringing with it rain, accumulating snows, and a sustained period of strong winds across the Great Lakes, Mid-Atlantic, and Northeast US.
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The first half of the new work week will be relatively quiet and mild, but the weather turns quite active later this week as a deepening upper-level trough dives into the Mid-Atlantic region. This strong upper-level trough will become a slow-mover thanks to strong blocking high pressure to the north over northeastern Canada. At the surface, an initial low pressure system will head towards the Great Lakes in the late week time period and then a secondary low should form near the northern Mid-Atlantic coastline.
The end result of this unfolding scenario should be occasional rain here from later Wednesday into Thursday morning and there is a slight chance of a thunderstorm. Scattered rain showers are then likely from Thursday afternoon through the day on Friday as the atmosphere will remain quite unstable and it is not out of the question that a few flakes or ice pellets mix in at times. In terms of temperatures, after a mild day on Wednesday ahead of the cold front, it turns noticeably colder on Thursday and it’ll remain cold on Friday with highs limited to the middle 40’s to close out the work week. The winds will become quite strong on the backside of this low pressure system from a northwesterly direction and should last all the from later Thursday through much of the upcoming weekend given the storm’s slow movement. One final note, skiers in the northeastern states may be happy after this late week event as early season accumulating snow is quite likely from upstate PA to upstate NY to interior New England.
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The next couple of days will be unsettled across the region as a cold front swings through the Tennessee Valley bringing with it the chance for occasional showers and thunderstorms. Some of the rain on Tuesday can be on the heavy side as the front pushes through the region and there can be some gusty winds as well. The second half of the week will be quieter and colder following the passage of the cold frontal system.
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The first half of the new work week will be relatively quiet and mild, but the weather turns quite active later this week as a deepening upper-level trough dives into the Mid-Atlantic region. This strong upper-level trough will become a slow-mover thanks to strong blocking high pressure to the north over northeastern Canada. At the surface, an initial low pressure system will head towards the Great Lakes in the late week time period and then a secondary low should form near the northern Mid-Atlantic coastline.
The end result of this unfolding scenario should be occasional rain here from later Wednesday into Thursday morning and there is a slight chance of a thunderstorm. Scattered rain showers are then likely from Thursday afternoon through the day on Friday as the atmosphere will remain quite unstable and it is not out of the question that a few flakes or ice pellets mix in at times. In terms of temperatures, after a mild day on Wednesday ahead of the cold front, it turns noticeably colder on Thursday and it’ll remain cold on Friday with highs limited to the middle 40’s to close out the work week. The winds will become quite strong on the backside of this low pressure system from a northwesterly direction and should last all the from later Thursday through much of the upcoming weekend given the storm’s slow movement. One final note, skiers in the northeastern states may be happy after this late week event as early season accumulating snow is quite likely from upstate PA to upstate NY to interior New England.
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The first half of the new work week will be relatively quiet and mild, but the weather turns quite active later this week as a deepening upper-level trough dives into the Mid-Atlantic region. This strong upper-level trough will become a slow-mover thanks to strong blocking high pressure to the north over northeastern Canada. At the surface, an initial low pressure system will head towards the Great Lakes in the late week time period and then a secondary low should form near the northern Mid-Atlantic coastline.
The end result of this unfolding scenario should be occasional rain here from later Wednesday into Thursday morning and there is a slight chance of a thunderstorm. Scattered rain showers are then possible on Thursday afternoon and evening as the atmosphere will remain quite unstable. In terms of temperatures, after a mild day on Wednesday ahead of the cold front, it turns noticeably cooler on Thursday and it’ll remain quite chilly on Friday with highs limited to the upper 40’s to close out the work week. The winds will become quite strong on the backside of this low pressure system from a northwesterly direction and should last all the from later Thursday through much of the upcoming weekend given the storm’s slow movement.
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Today will feature high temperatures well up in the 50’s with high pressure in control, but it turns colder on Tuesday and there will be a chance for some snow. A low pressure system is likely to rotate around the base of a longwave upper-level trough on Tuesday as it tracks from Utah to eastern Colorado. As a result, some snow will first form over the higher elevations to the west of here and then snow showers can make their way into the metro region as it turns much cooler following the mild conditions of today.
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The first half of the new work week will be relatively quiet and mild in the Mid-Atlantic, but the weather turns quite active later this week as a deepening upper-level trough slides into the eastern states. This strong upper-level trough will become a slow-mover thanks to intense blocking high pressure to the north over northeastern Canada. At the surface, an initial low pressure system will head towards the Great Lakes in the late week time period and then a secondary low should form near the northern Mid-Atlantic coastline. The end result of this unfolding scenario will be rain and possible thunderstorms in the Mid-Atlantic region from late Wednesday into early Thursday and then windy, colder conditions to follow for the next few days. Accumulating snow is likely during this event across interior, higher elevation locations of the Mid-Atlantic region from update PA to upstate NY, and interior New England can get hit hard as well by the end of the week.
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Nice weather returns to the region for the late week and weekend with high pressure taking back control. Both weekend days should feature plenty of sunshine and mild conditions with temperatures climbing well up into the 60’s.
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The last day of the work week will feature dry and mild conditions and afternoon highs not too far from 60 degrees. It turns cooler for the weekend and then colder early next week with highs likely confined to the 30’s by Tuesday and Wednesday. A low pressure system could arrive here around Tuesday of next week bringing us a chance of snow in the metro area.
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