SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0617 PM CST Tue Dec 22 2020 Valid 230100Z - 231200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are generally not expected through tonight. ...Discussion... Strong cooling aloft is currently spreading east across the central and northern Rockies, with only a sporadic lightning flash noted over northern CO. Strengthening downslope flow east of the Divide and loss of heating may quell isolated flash activity in the near term, with only a slim chance later this evening over the northern Plains as very weak elevated instability develops due to steep lapse rates aloft. Forecast soundings show perhaps non-zero MUCAPE values rooted above 700 mb. In any event, the probability of thunderstorms remains below 10%. ..Jewell.. 12/23/2020
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