SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1117 AM CST Thu Dec 25 2025 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are not expected across the continental U.S. Friday or Friday night. ...Synopsis... A persistent mid-level ridge will begin to weaken as it moves across the central U.S. Friday. At the same time, a broad trough over the West Coast will finally move onshore and into the western states. Isolated thunderstorms will be possible during the day across coastal California eastward into the Great Basin/Intermountain West, as moisture associated with the trough streams inland. Weak buoyancy and only minimal surface heating from remnant cloud cover and multiple days of precipitation should greatly limit severe potential. ...Eastern Great Lakes to the Mid Atlantic... A secondary trough on the eastern periphery of the ridge will intensify as it moves out of the Great Lakes and into the Northeastern US late Friday into early Saturday. A modest surface low and low-level warm advection will allow for weak elevated destabilization and isolated storms over parts of eastern MI and OH, into the central Appalachians Friday evening. Buoyancy will become increasingly scant farther east into the Mid Atlantic. While a few storms remain possible into early Saturday, peak MUCAPE below 500 J/kg suggests severe potential is very low. ..Lyons.. 12/25/2025
