Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0648 AM CST Tue Jan 20 2026
Valid 201300Z - 211200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorms are not forecast across the U.S. today or tonight.
...Synopsis and Discussion...
With large-scale upper troughing persisting over central/eastern
Canada and the CONUS today, expansive surface high pressure in place
across the MS/OH Valleys and eastern states will shift gradually
eastward as weak surface lee troughing/low development occurs across
the central High Plains. Modest low-level moisture will advance
slightly inland across parts of deep south into coastal/east TX, but
instability is expected to remain too limited to support
thunderstorms through the end of the period.
..Gleason/Dean.. 01/20/2026
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