Day 3 Convective Outlook

Issued: 2026-09-25 07:25 UTC  ·  Valid: 2026-09-27 12:00 – 2026-09-28 12:00 UTC

Summary

No severe thunderstorms are expected on Sunday, though some thunderstorms may occur across the central and northern Rockies and Plains states.

Product Text

000 ACUS03 KWNS 250725 SWODY3 SPC AC 250723 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0223 AM CDT Fri Sep 25 2026 Valid 271200Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected on Sunday. ...Synopsis... A mid-level cut-off low will meander just off of the Mid-Atlantic coastline while upper ridging persists over the central U.S. and an upper trough amplifies west of the Rockies on Sunday. Thunderstorms will be possible across the central and northern Rockies ahead of an embedded mid-level impulse, which will be accompanied by cooler temperatures aloft and deep-layer ascent. Thunderstorms will also be possible in the Plains states in association with low-level moisture advection accompanying surface lee troughing. Across the northern High Plains, strong vertical wind shear will accompany the approaching mid-level impulse, which may ultimately support an instance or two of marginally severe wind or hail. However, buoyancy will be negligible to poor, so organized severe potential is unlikely at this time, precluding the need for probabilities this outlook. ..Squitieri.. 09/25/2026 $$