ACUS01 KWNS 041237
SWODY1
SPC AC 041236

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0636 AM CST Tue Nov 04 2025

Valid 041300Z - 051200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
A few lightning flashes may accompany low-topped storms along the
California and Oregon coasts early Wednesday morning. Organized
severe storms are not expected.

...Discussion...
A shortwave trough will amplify southeastward over the Canadian
Prairies toward the upper Great Lakes tonight, while a more
prominent upper trough and related frontal band approach the Pacific
Northwest/northern California coasts late tonight and early
Wednesday. A cool and/or stable low-level airmass will overspread
most of the U.S., limiting thunderstorm development. An exception
may be portions of the Oregon and northern California coasts. In
relation to the approaching upper trough, cooler temperatures aloft
will gradually overspread the coast, and scant buoyancy may be
sufficient to support a few lightning flashes with low-topped
thunderstorms near the coast early Wednesday.

..Guyer/Kerr.. 11/04/2025

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