SPC Day 1 Marginal Risk Issued Across Gulf Coast, Far West Texas, Nebraska and Northern Rockies Today May 25

NORMAN, OKLAHOMA — The Storm Prediction Center has issued its Day 1 Categorical Outlook at 1242Z on May 25, 2026, placing a Marginal Risk of severe weather across several distinct zones of the country including parts of the central Gulf Coast, portions of Far West Texas and southern New Mexico, a corridor from Nebraska into southwest Minnesota, and the northern Rockies, valid from 1300Z May 25 through 1200Z May 26, 2026.

Central Gulf Coast and Southern Mississippi Region Carries Marginal Risk Designation

One of the more notable Marginal Risk zones on today’s outlook is positioned across the central Gulf Coast, with a darker green shading visible across coastal Mississippi, Alabama, and the surrounding Gulf region. This area sits within a broader thunderstorm risk zone and carries the lowest level of organized severe weather potential on the SPC scale, indicating isolated severe storms are possible but not expected to be widespread.

Residents along the central Gulf Coast should remain aware of the potential for isolated strong to marginally severe thunderstorms through the valid period today and into Tuesday morning.

Nebraska Into Southwest Minnesota Corridor Also Flagged in Marginal Zone

A separate Marginal Risk area is outlined across a corridor stretching from Nebraska northward into southwest Minnesota. This zone aligns with a broader thunderstorm threat area covering much of the central plains today and represents another pocket where isolated severe storm development cannot be ruled out through the afternoon and evening hours.

The darker green shading across the Nebraska and South Dakota border region indicates the higher end of the Marginal Risk within this particular zone on today’s map.

Northern Rockies and Far West Texas Round Out the Multi-Zone Outlook

Two additional areas of Marginal Risk are depicted on today’s SPC outlook. The northern Rockies region, covering parts of Idaho and Montana, carries a Marginal designation tied to convective development in that terrain-driven environment. Far West Texas and southern New Mexico round out the fourth distinct risk zone on the map.

A broad general thunderstorm risk area covers much of the central and eastern United States outside the Marginal zones, keeping a wide swath of the country in play for non-severe convective activity through the outlook period.

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