SPC Mar 11, 2025 0600 UTC Day 1 Convective Outlook

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1230 AM CDT Tue Mar 11 2025

Valid 111200Z - 121200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Isolated thunderstorms are expected across far southern California
and into Arizona today. Severe storms are not expected.

...Discussion...
As an upper low just off the East Coast this morning progresses
across the western Atlantic, quasi-zonal flow aloft is expected
across a substantial portion of the country. An exception will be
across the southwestern states, as a second low shifts inland over
southern California and northern Baja, and gradually progresses into
Arizona/northwestern Mexico.

As this system advances, and mid-level lapse rates steepen, showers
and occasional/embedded lightning will spread inland, affecting
southern California through the day, and across the Colorado Valley
into Arizona overnight.  Weak buoyancy should preclude any
appreciable severe risk.

..Goss/Squitieri.. 03/11/2025

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