SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1108 AM CST Wed Dec 16 2020 Valid 171200Z - 181200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Aside from parts of central California Thursday morning, the risk for thunderstorms appears low across the remainder of the U.S. Thursday through Thursday night. ...Synopsis and Discussion... Weak instability may develop across parts of south FL Thursday ahead of a southeastward-moving cold front, but the lack of large-scale forcing aloft and only modest low-level convergence along the front suggest that thunderstorm potential should remain low. Otherwise, thunderstorms are not expected across a large majority of the CONUS owing to generally dry and/or stable conditions. One exception may be across parts of central CA Thursday morning, where cool mid-level temperatures and ascent associated with a progressive shortwave trough may support very weak instability and low thunderstorm chances early in the period. Orographic lift along part of the Sierras may also encourage isolated storms. ..Gleason.. 12/16/2020
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