SPC 0100Z Day 1 Outlook

Day 1 Outlook Image

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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