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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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O'Hare International Airport KORD (Arlington Heights South)
Chicago Executive Airport KPWK (Arlington Heights North)

Friday, March 13, 2026

SPC Mar 13, 2026 0600 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1220 AM CDT Fri Mar 13 2026

Valid 131200Z - 141200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected.

...South Florida...

Neutral-weak height rises are forecast across the FL Peninsula
during the day1 period as midlevel flow gradually weakens across low
latitudes, including the eastern Gulf basin/south FL. Latest
diagnostic data depicts a weak surface boundary extends across the
southern tip of the peninsula, and this feature is forecast to
migrate toward the western tip of the south FL Peninsula by the end
of the period. Modest daytime heating should contribute to weak
buoyancy and scattered convection is expected to develop within this
weak-flow regime. Forecast lapse rates/instability appear too weak
to warrant a meaningful risk for severe thunderstorms today.

..Darrow/Thornton.. 03/13/2026


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