SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1126 AM CST Fri Dec 19 2025 Valid 201200Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms cannot be ruled out near coastal sections of Washington and northwest Oregon Saturday night. ...Synopsis... A benign pattern for thunderstorms will exist on Saturday across most of the CONUS with a broad belt of westerly winds aloft and high pressure over the East. While a trough amplification will develop from the northern Plains into the Great Lakes, antecedent dry surface trajectories around the surface high will maintain stable conditions across those areas. To the west, minimum weak thunderstorm potential may approach coastal WA into Sunday morning as a low-amplitude wave approaches. A sporadic lightning flash from weak elevated instability cannot be ruled out as well farther south across western OR into northern CA, but the overall risk of thunderstorms is quite low. ..Jewell.. 12/19/2025
