SPC Jan 20, 2024 1300 UTC Day 1 Convective Outlook
SPC 1300Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0643 AM CST Sat Jan 20 2024

Valid 201300Z - 211200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not expected across the CONUS today.

...Discussion...
A slowly progressive upper flow field is expected across the U.S.
today, as troughing near the West Coast gradually moves
eastward/inland, and a second trough over the East advances
toward/into the western Atlantic. In between, ridging initially
over the Rockies will progress steadily into/across the Plains.

At the surface, a continental polar airmass will prevail east of the
Rockies, with a 1040-plus high now centered in the Mid Missouri
Valley area forecast to reach the Mid-Ohio and Tennessee Valleys
early Sunday morning. With the cold/dry air low-level air in place,
thunderstorms are not expected east of the Rockies. In the West, a
lack of instability suggests that -- despite widespread
precipitation forecast to continue spreading inland, thunderstorms
are unlikely through the period.

..Goss.. 01/20/2024


Read more
https://www.spc.noaa.gov/products/outlook/day1otlk_1300.html