SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0624 AM CST Wed Jan 21 2026 Valid 211300Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms should occur across parts of east/southeast Texas into the lower Mississippi Valley today and tonight. ...Synopsis and Discussion... Modest low-level moisture will make some inland advancement today across east/southeast TX into the lower MS Valley ahead of a surface cold front as longwave upper troughing persists across the central/eastern CONUS. A low-amplitude shortwave trough rounding the base of the large-scale upper trough should continue to encourage showers and isolated/mainly elevated convection across these areas through tonight. Instability is expected to remain too weak to support severe thunderstorms. ..Gleason/Dean.. 01/21/2026
