Administrators NorthGeorgiaWX Posted December 11, 2023 Administrators Share Posted December 11, 2023 SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0629 AM CST Mon Dec 11 2023 Valid 111300Z - 121200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected in the U.S. through tonight. ...Synopsis/Discussion... In mid/upper levels, cyclonic flow will remain over the East, but will lose amplitude in response to two processes: 1. The eastward ejection of a substantial trough now over the Lower Great Lakes and Mid-Atlantic region. The associated low-level cold front is in the process of clearing the New England Coast, with the surface-based buoyancy well south of the area, and another couple hours of 100-300 J/kg MUCAPE largely confined to between the top of a stable boundary layer and the -20 deg C thermal level. While a rogue flash cannot be ruled out around Cape Cod, lightning potential appears too low and isolated to introduce a general-thunder area. 2. Amplification and slow eastward shift of initially weak troughing now over the Pacific Coast vicinity, reaching interior OR/western ID, northwestern NV, and east-central/southwestern CA by the end of the period. Associated strengthening DCVA/cooling aloft should remain too displaced from enough elevated moisture to support a thunderstorm area until day 2. ..Edwards/Gleason.. 12/11/2023 Read more View the full article Quote Link to comment Share on other sites More sharing options...
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