SPC 1730Z Day 2 Outlook

Day 2 Outlook Image

Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1051 AM CST Fri Dec 11 2020

Valid 121200Z - 131200Z


Only minimal thunderstorm activity is anticipated over parts of the
USA on Saturday.

A low-amplitude shortwave trough will move from the mid MS Valley
Saturday morning to the lower Great Lakes by 00Z, with a secondary,
stronger wave diving southeast across the Four Corners and into the
southern High Plains early Sunday. Low pressure associated with the
lead wave will move across Lower MI during the day with a cold front
extending south across KY, TN, MS, AL and LA. Lower 60s F dewpoints
will be common across parts of LA, MS and AL ahead of the front, but
lack of lift and poor thermodynamics suggest little if any severe
threat and only isolated weak thunderstorms.

Overnight, a strong low-level jet response will occur over TX, with
strengthening large-scale ascent across NM, TX, and OK. Forecast
soundings indicate weak elevated buoyancy will develop from
northeast NM into the TX Panhandle, with a few lightning flashes
possible. Warm midlevel temperatures should preclude any thunder
threat farther south over TX.

Elsewhere, a cold front will approach coastal WA and OR late
Saturday night, providing lift and perhaps enough instability for a
lightning flash or two.

..Jewell.. 12/11/2020

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