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Posted
SPC 1630Z Day 1 Outlook
Day 1 Outlook Image
Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1024 AM CST Thu Dec 21 2023

Valid 211630Z - 221200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Isolated thunderstorms are possible today across parts of southern
California, southern Arizona and from north Texas into southeast
Kansas. Severe thunderstorms are not expected.

...Discussion...
Low-amplitude flow aloft will prevail across most of the U.S. today,
away from a developing closed low over the Canadian Maritimes, and a
second low that will remain just off the southern California/Baja
coast through the period.

Surface high pressure -- and associated cool/stable low-level
conditions -- will again encompass much of the country, limiting
convective potential over a majority of the CONUS. 

Two exceptions -- where isolated thunderstorms may occur -- include
southern portions of California and Arizona, ahead of the
aforementioned offshore upper low, and into portions of the
Kansas/Oklahoma/North Texas area, ahead of mid-level short-wave
troughing advancing eastward across this area through otherwise
weak/westerly flow.  In both areas, severe weather is not expected.

..Goss/Thornton.. 12/21/2023

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