A strong frontal system will generate showers and thunderstorms in the area through this evening and some of the rain will be heavy at times. In locations where strong thunderstorms take place, rainfall amounts can climb to 2 or 3 inches with localized flash flooding a threat. On the other side of the front on Thursday, cooler air will flood the Tennessee valley and temperatures will drop through the 30’s tomorrow night.
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A major storm system continues to wreak havoc across the nation today with blizzard conditions in the Northern Plains and severe weather in the south-central US. This same system dumped 6 feet of snow over the weekend in the Sierra Nevada Mountains of eastern California. As this initial storm system grinds to a halt over the Upper Midwest later this week, a secondary storm will form near the eastern seaboard. This system will bring significant snows to interior sections of the Mid-Atlantic and Northeast from Thursday into Friday while the I-95 corridor region from DC-to-Philly-to-NYC is likely to experience a wintry mix at the onset of the event followed by heavy (plain) rain and strong winds.
Looking ahead, an Arctic outbreak appears to be headed to the US later next week and the biting cold will likely last right through Christmas weekend in the central and eastern states. Arctic cold has already become well established across much of Europe and Asia which is often a foreshadowing of conditions to come in the US. The cold pattern will remain quite active later next week with storm chances increasing the chances for a white Christmas in much of the northern US.
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Low pressure will intensify over the central states today and generate blizzard conditions in the Northern Plains with heavy snow and powerful winds. This storm will push to the northeast tonight and the blizzard conditions will extend into Minnesota and Upper Wisconsin. Meanwhile, on the storm’s warm side, severe weather is likely to break out later today into tonight in the Lower Mississippi and Tennessee Valleys including the possibility of isolated tornadoes. The initial primary surface low pressure system will grind to a halt and weaken as it reaches the Great Lakes due to a strong blocking pattern in the atmosphere over Canada.
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The overall weather pattern has become quite active and the latest storm system will wreak havoc across much of the nation during the next few days. In fact, this system has already contributed to several feet of snow in the Sierra Nevada and southern Cascades out west and blizzard conditions will develop on Tuesday across the northern Rocky Mountain states. By tomorrow night and Wednesday, this storm system will bring blizzard conditions to the and Northern Plains and Upper Midwest.
At the same time, the warm sector of this storm will likely feature some severe weather from later tomorrow into Wednesday across the Lower Mississippi and Tennessee Valleys. On Thursday, the precipitation field from this impactful storm system will reach the Mid-Atlantic region and the onset is likely to feature a wintry mix - even into the I-95 corridor before an eventual changeover to plain rain.
Looking ahead, a very cold pattern is destined to develop across the central and eastern US later next week. Arctic cold has already become well established across much of Europe and Asia – often a foreshadowing of conditions to come in the US. The cold pattern will remain quite active as well increasing the chances for a White Christmas in much of the northern US.
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An active weather pattern will continue this week with a strong storm system wreaking havoc on much of the nation. Low pressure will intensify over the central states on Tuesday and produce blizzard conditions in the Northern Plains with heavy snow and powerful winds. On its warm side, severe weather could break out on Tuesday night in the Lower Mississippi and Tennessee Valleys including the possibility of tornadoes. The initial primary low pressure system will grind to a halt as it reaches the Great Lakes/southern Canada due to a strong blocking pattern in the atmosphere over Canada. A secondary storm will likely develop near the east coast later in the week and this could result in a significant winter storm for the Mid-Atlantic from Thursday into Friday with a combination of rain, ice and snow.
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Warm and unsettled weather will continue here today with a continuing chance of showers and above-normal temperatures. The mild weather will give way to slightly cooler weather this weekend and the threat of showers will continue across northern Alabama.
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The overall weather pattern across the nation will be quite active from later this weekend through next week with multiple storm threats. One low pressure system will form over the Midwest on Saturday and then its precipitation shield will push into the Mid-Atlantic region on Sunday. Enough cold air will be around for snow on Sunday in much of the northern Mid-Atlantic with accumulations of up to a few inches likely in some interior and higher elevation locations. Another storm system will wreak havoc across much of the nation next week with a possible severe weather outbreak late Tuesday/Tuesday night in the Lower Mississippi and Tennessee Valleys and blizzard conditions across the Northern Plains. This system and its precipitation field likely reaches the eastern states later next week and frozen precipitation will likely be in the mix: especially, if re-development of a surface low takes place near the east coast which could make for more of a serious winter storm threat in the Mid-Atlantic. The evolving pattern should feature more sustained cold air in the eastern states following that mid-to-late week storm system and “cross-polar flow” later this month will assure some very cold air masses reaching into North America.
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Warm and unsettled weather will continue through Friday across the Tennessee Valley with a continuing chance of showers and thunderstorms and above-normal temperatures. The mild weather will give way to slightly cooler weather this weekend and the threat of showers will continue across northern Alabama.
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The overall weather pattern will be quite active from this weekend through next week with multiple storm threats in the northeastern US and a possible severe weather threat around Tuesday of next week in the Lower Mississippi Valley. Cold air is trying to work its way into the northeastern US on a consistent basis, but likely won’t be able to until later next week. Nonetheless, there will be enough cold air around for a likely Sunday/Monday storm threat to at least produce a chance of accumulating snow in the northeastern states. Another storm system will likely arrive in the eastern states by the middle of next week and there may be enough cold air around for some frozen precipitation at the onset in portions of the Northeast US. More sustained cold air will follow later next week.
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Warm and unsettled weather will continue today across the Tennessee Valley with a continuing chance of showers and thunderstorms and above-normal temperatures nearing the 70 degree mark. The mild weather will continue through the rest of the work week and then it turns slightly cooler for the weekend.
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