November has started off much colder-than-normal across the nation and there won’t be any let up for the eastern 2/3rds of the nation into at least the middle part of the month. The cold start to the month follows a colder-than-normal October across the CONUS with more than twelve-hundred sites experiencing the lowest temperature ever in the month of October and, even-more impressive, many locations set their monthly record for the month as a whole. Multiple cold air outbreaks will ride along the polar jet stream during the next couple of weeks from the northern part of Canada to the Mid-Atlantic/NE US with the first one arriving in the Thursday night/Friday time frame and another next Monday. The late week cold blast will also feature rain-changing-to-snow in parts of the interior Mid-Atlantic and NE US and several inches can accumulate from western New York State to upstate Maine.
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The next couple of days will feature generally mild conditions for the Tennessee Valley, but another cold shot is on the way for the end of the work week as a chilly weather pattern likely continues for the next couple of weeks. A polar jet stream will continue to allow for the transport of cold air masses from central Canada into the central and eastern US and the next significant blast will arrive here by Friday. After highs well up in the 60’s over the next couple of days, a strong cold front will arrive later Thursday, and highs on Friday will likely be confined to the 40’s across northern Alabama.
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November has started off colder for the nation as a whole than all but two years (1991, 2002) going back to the late 1970’s and there won’t be much let up for the eastern 2/3rds through at least the middle part of the month. The powerful frontal passage late last week in the eastern US was part of an overall pattern change and the warmth of October has transitioned to the cold of November. There will likely be multiple cold air outbreaks over the next couple of weeks that ride along in the polar jet stream from central Canada to the Mid-Atlantic/NE US. After a bit of a warm up on Tuesday, it’ll turn cooler again at mid-week, but it is the late week when another impressive cold air blast will arrive. This next shot of cold air will drop southeastward from Canada and arrive in the Mid-Atlantic/NE US in the Thursday night/Friday time period. Another cold air outbreak is destined to reach the central and eastern US early next week. Both of these cold air outbreaks may present some snow possibilities for the Great Lakes and interior NE US and even to parts of the Mid-Atlantic region.
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The overall upper atmosphere pattern this week will feature a broad trough over the eastern US and high pressure ridging over the west coast. Flow over the northern part of Alabama will be rather zonal (i.e., west-to-east) and temperatures will begin to moderate through mid-week. A minor disturbance can result in some shower activity later in the week, but no significant rain event is in the offing. It’ll turn quite a bit cooler as well at week’s end following the passage of a cold front.
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Yesterday’s frontal passage ushered in much cooler air and temperatures today will be confined to the lower 50’s for highs this afternoon. Under clear skies tonight, temperatures will again drop to near the freezing mark in many locations and frost is likely. A secondary cold front will usher in another cool air mass on Sunday delaying any warm up into early next week.
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A game-changing cold front will cross the region today and usher in much colder air with temperatures likely falling into the low-to-mid 40’s by day’s end. Showers will accompany the frontal passage this morning and then should wind down later today setting the stage for late night frost and overnight lows not far from freezing. It’ll stay chilly on Friday and Saturday with overnight lows again dropping way down into the 30’s and then a secondary front will usher in even cooler air on Sunday.
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A much colder-than-normal air mass has pushed into central US and it will spread across the nation over the next couple of days albeit in a somewhat modified form. A strong cold front at the leading edge of this air mass will arrive here in the Tennessee Valley early Thursday and we’ll likely experience some heavy rainfall and possible strong thunderstorms from later today into tomorrow. Much colder air will push into the area late Thursday night with temperatures likely dropping into the 30’s for lows and highs are likely to be confined to the 50’s on Friday, Saturday and Sunday.
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A much colder-than-normal air mass has dropped into the western and central US and will spread across the nation over the next few days albeit in a modified form. A strong cold front at the leading edge of this air mass will arrive here in the Tennessee Valley early Thursday and we’ll likely experience some heavy rainfall and possible strong thunderstorms on Wednesday and Wednesday night. Much cooler air will push into the area late in the week and our highs may be confined to the 50’s by the upcoming weekend.
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A colder-than-normal air mass has dropped into the western US and will spread across the central US by the middle of the week. A strong cold front at the leading edge of this air mass will trek across the nation over the next few days and arrive in the Tennessee Valley later in the week with some heavy rainfall and possible strong-to-severe thunderstorms. Following the passage of the front, much cooler air will push into the region for the end of the week and upcoming weekend.
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A tropical system over the western Gulf of Mexico will push northward over the next couple of days and combine with an eastward moving cold front to generate significant rainfall from the northern Gulf to the Ohio Valley. Widespread rainfall is also likely here from later today into later tomorrow and it can be heavy at times in the Tennessee Valley. In addition to the rain, winds will become a noticeable factor; especially, in some of the higher elevation terrain regions later tonight and on Saturday. Given the copious amount of clouds expected today and the rainfall, it’ll turn out to be cooler than yesterday with highs confined to the 60’s. Later tomorrow night, a strong cold front will cross the region and this should pave the way for improving conditions on Sunday.
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