Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1256 AM CDT Wed Mar 18 2026
Valid 181200Z - 191200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Isolated thunderstorms will be possible today across far south
Florida.
...DISCUSSION...
An upper-level trough will move across the eastern U.S. today, as
northwest mid-level flow remains over much of the rest of the
nation. At the surface, high pressure will move eastward to the
Eastern Seaboard, as a dry airmass stays in place over most of the
continental U.S. The only chance for thunderstorms today will be
over far south Florida, where enough instability will be in place
for isolated thunderstorm development. No severe threat is forecast
over the U.S. today and tonight.
..Broyles/Chalmers.. 03/18/2026
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