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SPC Mesoscale Discussion: Tornado Watch 427…

| November 12, 2018 @ 6:26 pm

SUMMARY…Severe threat should continue to diminish this evening. Additional downstream watch issuance is not expected.

DISCUSSION…A broken line of thunderstorms will continue eastward across southwestern GA and the FL Panhandle this evening. 00Z sounding from Tallahassee, FL shows a sharp inversion around 900 mb with only weak (less than 500 J/kg) MLCAPE. As the low-level flow across this region weakens and veers, convergence along/ahead of a surface front should likewise diminish. With the loss of daytime heating and the ongoing line of storms becoming increasingly oriented parallel to southwesterly mid-level flow, the overall severe threat will likely continue to diminish this evening. Therefore, downstream watch issuance is not expected, and WW 427 will be allowed to expire as scheduled at 01Z.

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Category: ALL POSTS, MescoScale Discussions

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