SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1149 PM CST Thu Jan 21 2021 Valid 221200Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... No severe weather is expected across the U.S. today and tonight. ...DISCUSSION... 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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