Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0646 AM CDT Thu Mar 19 2026 Valid 191300Z - 201200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast across the U.S. today or tonight. ...Synopsis... An upper ridge will remain over the southwest states today, with broad troughing over the east. Dry and stable conditions will preclude thunderstorms over most areas today, with the only area of some risk being over southeast FL late tonight. Given the weak forcing, minimal CAPE, and unfavorable timing, 10% coverage of thunderstorms is not anticipated. ..Hart/Weinman.. 03/19/2026Read more