SPC 2000Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0155 PM CST Sat Dec 05 2020

Valid 052000Z - 061200Z


Severe thunderstorms are not expected across the U.S. mainland
through tonight.

...20Z Update...
Only adjustment was to remove the thunderstorm area near coastal
southern New England as the risk for any near-shore elevated
convection is low and will be further diminishing. Otherwise, see
prior discussion below.

..Guyer.. 12/05/2020

.PREV DISCUSSION... /ISSUED 1030 AM CST Sat Dec 05 2020/


A few thunderstorms remain possible mainly near the TX coast as a
series of weak impulses move northeast along southeastern periphery
of an upper low situated over northern Mexico. Very sparse lightning
flashes also cannot be ruled out farther west toward central through
northwest TX from mid-level convection. Here, steeper 700-500 mb
lapse rates exist in the presence of strong mid-level ascent
associated with vorticity maxima rotating through the upper low

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