SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1000 AM CST Mon Dec 29 2025 Valid 291630Z - 301200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast through tonight. ...Synopsis and Discussion... An amplified upper trough/low with an intense mid-level jet will continue advancing east-northeastward over Ontario/Quebec and the eastern CONUS today. A related strong surface cold front will also move east-southeastward across the Southeast and Gulf through the period. With negligible instability forecast over land ahead of the front, thunderstorm probabilities still appear less than 10%. ..Gleason/Wendt.. 12/29/2025
