ACUS01 KWNS 281939 SWODY1 SPC AC 281937 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0137 PM CST Tue Jan 28 2025 Valid 282000Z - 291200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast across the contiguous United States through tonight. ...20Z Update... The forecast remains on track, and no changes were needed with this update. ..Weinman.. 01/28/2025 .PREV DISCUSSION... /ISSUED 1028 AM CST Tue Jan 28 2025/ ...Discussion... Split upper-level flow will persist over the CONUS with a slow-moving southern-stream upper low over the Southwest Deserts and northwest Mexico. In the presence of steep lapse rates, a few lightning flashes will be possible across southern California and northern Arizona through around sunset. No thunderstorms are expected elsewhere as cool/stable conditions prevail. $$