SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0127 PM CST Wed Dec 17 2025 Valid 191200Z - 201200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms may occur over the Mid Atlantic and Northeast early Friday, and in the Pacific Northwest Friday afternoon through Friday night. ...Discussion... A deep upper trough will move from the Great Lakes across the Northeast, with a strong cold front moving across New England and the Mid Atlantic during the day. Widespread precipitation and clouds are likely within the pre-frontal warm advection regime, and this will limit heating and destabilization. Sporadic lightning flashes are possible within the strongly forced shallow convective line and/or with elevated pre-frontal convective elements. ..Jewell.. 12/17/2025
