SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1051 AM CST Fri Dec 11 2020 Valid 121200Z - 131200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Only minimal thunderstorm activity is anticipated over parts of the USA on Saturday. ...Synopsis... 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
There’s more click here.