SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0150 PM CST Thu Dec 17 2020 Valid 172000Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms appear unlikely across the contiguous United States for the remainder of the afternoon and tonight. ...20Z Update... As surface winds veer to westerly across the southeastern FL Peninsula, low-level convergence along a cold front should continue to weaken, with minimal thunderstorm potential over land. Lightning potential also appears to have diminished over CA as a shortwave trough moves southeastward. ..Gleason.. 12/17/2020 .PREV DISCUSSION... /ISSUED 0951 AM CST Thu Dec 17 2020/ Latest water vapor loop shows multiple shortwave troughs affecting the US today, but relatively dry/stable conditions will limit the risk of thunderstorm activity to small parts of south FL and central CA. In both areas, large-scale forcing is weakening through the day and the risk of deep convection will diminish through the afternoon. No severe storms are expected.
There’s more click here.