SPC 2000Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0139 PM CST Fri Jan 15 2021

Valid 152000Z - 161200Z


A few brief thunderstorms are possible over the middle Ohio Valley
to Cumberland Plateau this afternoon.

...20z Update...

The ongoing forecast remains on track and no changes have been made
with this update.

..Leitman.. 01/15/2021

.PREV DISCUSSION... /ISSUED 1025 AM CST Fri Jan 15 2021/

...Lower/Middle Ohio Valley to Cumberland Plateau...
Cold mid-level temperatures (low to mid -30s C at 500mb) associated
with the Midwest-centered cyclone will overspread the region through
tonight. Relatively cloud-free skies over the Lower/Middle Ohio
Valley and Cumberland Plateau will contribute to a further
steepening of low/mid-level lapse rates this afternoon. Even while
mixing/low-level drying will tend to occur, a warming boundary layer
with scant moisture/buoyancy may be sufficient for a few low-topped
thunderstorms this afternoon.

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