10AM Day 1 Convective Outlook for Wednesday, January 21. NO SEVERE THUNDERSTORM AREAS FORECAST
SUMMARY
Isolated thunderstorms should occur across parts of east/southeast Texas into the lower Mississippi Valley today and tonight.
ArkLaTex Region
The persistent upper trough over the eastern states will maintain fast cyclonic flow aloft over the Gulf coast states today. A surface cold front will sag southward across parts of TX/AR/LA and eventually into MS. The air mass ahead of the front is moderately moist, with MUCAPE of less than 500 J/kg. This will result in occasional clusters of thunderstorms, but no severe storms are anticipated.
South FL
A subtle southern-stream shortwave trough will move across the Gulf and approach FL late tonight. This will result in an increase in the risk of isolated thunderstorms over southeast FL - mainly after midnight.