SPC 2000Z Day 1 Outlook

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0130 PM CST Fri Jan 08 2021

Valid 082000Z - 091200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorm potential appears minimal over the U.S. mainland.

...20Z Update...
No changes have been made to the prior outlook.

..Gleason.. 01/08/2021

.PREV DISCUSSION... /ISSUED 0932 AM CST Fri Jan 08 2021/

...Synopsis...
Within the southern stream of a split flow regime, one shortwave
trough and an associated surface cyclone will move eastward off the
southeast Atlantic coast, while an upstream trough moves inland from
OR to the Great Basin.  A surface cold front has moved across south
FL and the warm sector with the cyclone will likely remain offshore
of NC.  Otherwise, a small cluster of lightning flashes along the OR
coast has diminished as of 1530z.  Weak surface-based buoyancy will
be possible in the short term in a narrow corridor along the
immediate coast, though warming midlevel temperatures by late
morning into midday suggest that any thunderstorm threat will be
ending soon.

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