SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0638 AM CST Thu Jan 29 2026 Valid 291300Z - 301200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected today or tonight. ...Synopsis... Broadly cyclonic flow aloft is currently in place across much of the central and eastern CONUS, anchored by an expansive upper low centered over central Ontario. Early-morning satellite imagery shows a pair of shortwave troughs within the western periphery of this cyclonic flow, with the lead wave entering the TX Panhandle and OK and the second wave moving through western WY. Both of these shortwaves are forecast to move southeastward throughout the day, while another notably strong shortwave drops southward into the northern Plains and Upper Midwest early tomorrow. Evolution of these waves will reinforcing the cold, dry, and stable airmass already in place, and no thunderstorms are expected. Upper ridging is expected to build across much of the western CONUS/Intermountain West today. As it does, a pair of shortwave troughs are forecast to move through British Columbia and the Pacific Northwest. Showers with embedded convective elements will accompany each of these waves, but any convection should be too shallow for lightning production. ..Mosier/Broyles.. 01/29/2026
