SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0145 AM CST Sat Dec 27 2025 Valid 291200Z - 301200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Monday or Monday night. ...Discussion... A deep surface cyclone over Lake Huron at 12Z Monday should gradually fill as it occludes and tracks into southern QC. Secondary cyclogenesis should occur over ME into the Canadian Maritimes. The surface warm-moist sector will be confined to the Southeast, up to near the VA Tidewater, ahead of a progressive cold front. Guidance is consistent with negligible instability along/ahead of the front, which should clear all but the FL Peninsula by late afternoon and then shift entirely offshore Monday night. Shallow convection is possible along portions of the front, with thunderstorm probabilities appearing to be less than 10 percent. ..Grams.. 12/27/2025
