Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1037 PM CST Tue Jan 21 2025
Valid 221200Z - 231200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
The risk for thunderstorms appears negligible across the U.S. today
through tonight.
...Discussion...
Models indicate that mid-level ridging across the far western
Canadian Provinces will become suppressed by another short wave
perturbation emerging from the upstream mid-latitude Pacific, but
not before downstream troughing continues to dig southeast and south
of the northern U.S. Rockies. This will reinforce larger scale
troughing across much of the interior into eastern United States.
Although surface ridging initially across much of the Gulf Coast and
Atlantic Seaboard is forecast to weaken, seasonably cold and stable
boundary-layer conditions may be slow to moderate. It appears that
another expansive surface ridge will build across the Great
Basin/Rockies into the Great Plains, with a reinforcing intrusion of
arctic air surging through much of the upper Mississippi Valley and
northeastern Great Plains, today through 12Z Thursday.
..Kerr.. 01/22/2025
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