SPC 1200Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1149 PM CST Thu Jan 21 2021

Valid 221200Z - 231200Z


No severe weather is expected across the U.S. today and tonight.

A shortwave trough will move across the southern Plains today as
zonal mid-level flow remains in place across much of the southern
U.S. At the surface, a moist airmass will be located from the Texas
Coastal Plain eastward across the Gulf Coast region. Thunderstorm
development will be possible within this moist airmass ahead of the
shortwave trough across southern Louisiana, southern Mississippi and
far southern Alabama. Isolated thunderstorms will also be possible
in northern California near an upper-level trough and in far
southern Nevada ahead of the trough. No severe thunderstorms are
expected across the continental United States Friday and Friday
night, mainly due to a lack of instability.

..Broyles/Lyons.. 01/22/2021

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