SPC 0730Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0155 AM CDT Tue Oct 07 2025 Valid 091200Z - 101200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are not expected on Thursday. ...Synopsis... Upper ridging will persist over the Plains on Thursday. A weak shortwave impulse will move through the top of the ridge toward the Upper Great Lakes while another shortwave trough approaches the northern Plains by the end of the period. A large upper cyclone is forecast to remain offshore the Pacific Northwest coast while Hurricane Priscilla parallels the Baja coast. Strong surface high pressure over the Great Lakes will result in a mostly dry and stable airmass across the Midwest. While some modest moisture will return northward across the Plains on the western periphery of the surface high and ahead of the northern Plains upper shortwave trough, boundary layer moisture will remain meager across the Plains, precluding thunderstorm activity. Isolated storms are possible across parts of the Southeast where lingering moisture will be in place behind a prior cold frontal passage, but severe storms are not expected. Additional storms are possible across parts of the Southwest where low-level south/southeasterly flow will transport modest boundary layer moisture across the region. Poor lapse rates will limit instability to less than 500 J/kg MLCAPE and severe storms are unlikely. ..Leitman.. 10/07/2025
