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Archives for the SPC Convective Outlook are updated daily (approximately) with a live map at the beginning of each article. Follow the link at the end of the article to check for current updates on the NOAA/NWS Storm Prediction Center website. Also, see Archives for Chicago's hourly weather data on CARDINAL NEWS Magazine.

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Tuesday, November 4, 2025

SPC Nov 5, 2025 0100 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0633 PM CST Tue Nov 04 2025

Valid 050100Z - 051200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
A few lightning flashes may still occur early tomorrow morning along
the California and Oregon coasts as low-topped storms approach the
shoreline. Organized severe storms are not expected.

...Synopsis...
A mid-level trough continues to approach the West Coast as an upper
ridge tracks over the northern Rockies and mainly zonal flow aloft
persists from the Plains to the East Coast. A stable low-level
airmass will continue to overspread most of the CONUS, limiting
thunderstorm development. Nonetheless, the approach of the
aforementioned upper trough may promote enough cooling aloft (and
associated scant buoyancy), amid deep-layer ascent, to promote the
development of a few low-topped storms. Isolated lightning flashes
may accompany the stronger updrafts along the CA/OR coastline.

..Squitieri.. 11/05/2025


Read more CHECK UPDATE ZOOM GRAPHIC


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