SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1156 AM CDT Sat Sep 27 2025 Valid 281200Z - 291200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected across the Contiguous U.S. tomorrow (Sunday). ...Synopsis... Broad yet weak mid-level troughing will overspread the western U.S. while upper ridging dominates the CONUS east of the Rockies tomorrow (Sunday). A weak surface low will meander over the Baja Peninsula while surface high pressure will overspread the Rockies, as well as the Upper MS Valley into the Great Lakes and northern Appalachians. As such, the best chance for thunderstorms will be across portions of the Interior West, where upper support with the mid-level trough will lift a marginally buoyant airmass. Thunderstorms will also be possible across the Florida Peninsula, up to the Carolina coastline, where convective bands associated with Tropical Depression Nine attempt to move ashore amid marginal instability. The chance of any severe in these aforementioned areas is very low, so severe probabilities are not currently warranted. ..Squitieri.. 09/27/2025
