10:15 AM | **A potent cold front to produce severe weather threat on Tuesday/Tuesday night in MS/TN Valleys…gusts up to 50 mph in Mid-Atlantic Wednesday/Thursday surrounding the frontal passage**
Paul Dorian
A potent cold front will cross the Mid-Atlantic late Wednesday and SW winds will become quite strong on its front side perhaps gusting to 50 mph or so and they’ll remain quite strong after its passage on Thursday with a shift to a northwesterly direction. Map courtesy ECMWF, Pivotal Weather
Overview
A potent cold front will wreak havoc across the eastern half of the nation from tomorrow into Thursday with potential damaging wind gusts and even isolated tornadoes. An intensifying low pressure system will help to strengthen a low-level jet on Tuesday afternoon and evening as a strong cold front pushes into the Mississippi and Tennessee Valley regions. The result will be a high likelihood of damaging wind gusts and even isolated tornadoes. This same powerful low-level jet will translate to the Mid-Atlantic region on Wednesday and strong wind gusts of up to 50 mph will be a threat on Wednesday ahead of the front and also on Thursday following its passage.
A late season severe weather threat is in store for the Mississippi and Tennessee Valleys from tomorrow into tomorrow night. Map courtesy NOAA/SPC
Details
A late season severe weather threat is in the cards for Tuesday/Tuesday night across the Mississippi and Tennessee Valleys as a potent cold front pushes eastward along with an intensifying surface low pressure system. The atmosphere will become quite unstable on Tuesday morning and mid-day in Louisiana, Arkansas and Mississippi and then some of this instability will translate to Alabama by later in the day. With plenty of shear and instability in place on Tuesday afternoon, the chance for severe weather will increase to include possible damaging wind gusts, large hail and even isolated tornadoes. While this threat weakens somewhat by tomorrow night in places like Alabama, there will still be the chance for some rotating updrafts and possible isolated tornadoes. The front finally pushes through Georgia on Wednesday morning ending the threat of severe weather in that part of the country.
Isolated tornadoes are on the table for late tomorrow/tomorrow night across Louisiana, Arkansas and Mississippi. The threat will continue into Alabama later Tuesday night although somewhat weakened compared to these states just to their west. Map courtesy NOAA, Weather Bell
On Wednesday, the potent cold front will cross the Ohio Valley and winds ahead of it will increase noticeably in the Mid-Atlantic region. In fact, SW winds can gust up to 50 mph or so later Wednesday as a powerful low-level jet pushes into the Mid-Atlantic region with the advancing surface cold front. Temperatures can jump to near 60 degrees in the DC-to-Philly-to-NYC corridor and numerous showers are likely to go along with the strong winds.
The passage of the strong cold front on Wednesday night will usher in a cold blast for the Mid-Atlantic region on Thursday and winds will shift from SW to NW and remain quite strong. Map courtesy NOAA, tropicaltidbits.com
Following the passage of the front, winds will shift to a NW direction on Thursday and remain quite strong with gusts likely in the 40-50 mph range in the Mid-Atlantic. Farther to the northeast, winds can gust past 50 mph along the New England coastline into the morning on Thursday as the front reaches that part of the Northeast US. It’ll be noticeably colder on Thursday in the DC-to-Philly-to-NYC corridor with highs likely in the 40-45 degree range following the near 60 degrees expected on Wednesday afternoon. It remains quite chilly on Friday as well , but a warm up is coming this weekend.
Meteorologist Paul Dorian
Arcfield
arcfieldweather.com
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