SPC Jan 20, 2026 1630 UTC Day 1 Convective Outlook
SPC 1630Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0953 AM CST Tue Jan 20 2026

Valid 201630Z - 211200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast across the U.S. today or tonight.

...Discussion...
A prominent longwave trough will remain entrenched from the Rockies
to the western Atlantic, with a general prevalence of cold/dry
continental trajectories and surface high pressure over the eastern
third of the CONUS. Airmass modification will occur with a modest
increase in low-level moisture toward coastal Texas tonight.
However, instability is expected to remain too limited to support
thunderstorms through tonight.

..Guyer/Lyons.. 01/20/2026


Read more
https://www.spc.noaa.gov/products/outlook/day1otlk_1630.html