SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1251 AM CDT Sat Sep 27 2025 Valid 271200Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... A severe threat is not expected to develop across the continental U.S. today and tonight. ...DISCUSSION... At mid-levels, a trough will move through the southeastern U.S. today, as a ridge remains over the central U.S. A low will remain over southern California. At the surface, a moist airmass will be in place ahead of the trough in the Southeast, and in parts of southern Arizona. Scattered thunderstorms are expected to develop this afternoon in these two areas, but the combination of instability, lift and shear should be insufficient for severe storms. No severe threat is expected across the remainder of the continental U.S. today and tonight. ..Broyles/Moore.. 09/27/2025
