SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1250 AM CST Fri Dec 19 2025 Valid 201200Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible across coastal sections of Washington and northwest Oregon Saturday night. ...Synopsis... Broadly cyclonic mid-level flow associated with a shortwave trough over Ontario/Quebec Provinces will shift eastward across the Great Lakes and Northeast on Saturday as an upstream trough approaches the Pacific Northwest Saturday night. Slowly rising heights will extend across the southern U.S. through Saturday night in association with an upper-level high centered over northern Mexico. As modest height falls develop across the Pacific Northwest Late Saturday, very weak buoyancy (on the order of 100 J/kg) may develop along the immediate coastal areas. Isolated convective elements may deepen sufficiently for charge separation/lightning production. Modest low-level moisture should begin returning to the upper Texas/LA coast Saturday on strengthening southerly flow, with 50s to near 60 deg F surface dewpoints as far north as the Arklatex region. The presence of a capping inversion and lack of notable ascent suggests negligible chances for thunderstorms through Saturday night. ..Bunting.. 12/19/2025
