SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0644 AM CST Fri Dec 20 2024 Valid 201300Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe weather is not forecast across the contiguous United States through tonight. ...Synopsis... Water-vapor imagery this morning shows an upper trough centered over the Great Lakes, with this feature forecast to move east into the Northeast and east of the Mid-Atlantic states by late tonight. Farther west, a mid-level ridge will reside over the Rockies with an upper trough over the eastern Pacific approaching the northern CA/Pacific Northwest coast late. Scant instability may develop and result in a couple of thunderstorms late tonight near the immediate northern CA coast as a strong WAA regime impinges on this region. ..Smith/Goss.. 12/20/2024