SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1153 PM CST Wed Dec 10 2025 Valid 111200Z - 121200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast across the U.S. on Thursday. ...DISCUSSION... A mid-level trough will move eastward from the eastern U.S. into the western Atlantic today, as northwest flow remains over most of the nation. At the surface, a large area of high pressure will be located from parts of the Great Plains to the southern and central Appalachians. The relatively cool and dry airmass will be unfavorable for thunderstorm development across the U.S. through tonight. ..Broyles/Thornton.. 12/11/2025
