Administrators NorthGeorgiaWX Posted December 6, 2023 Administrators Share Posted December 6, 2023 SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1129 AM CST Wed Dec 06 2023 Valid 071200Z - 081200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected on Thursday. ...Synopsis... Embedded within a large-scale trough over the northwestern CONUS, a west-northwesterly midlevel jet streak will overspread northern CA early in the period, while a related weak surface low and cold front move ashore over the Pacific Northwest coast. Left-exit region ascent and frontal forcing will support multiple rounds of scattered eastward-spreading convection, focused over coastal WA/OR and northern CA. Despite poor boundary-layer moisture, cold temperatures aloft/steep lapse rates will still yield sufficient (albeit weak) instability for isolated/embedded low-topped thunderstorms. While modestly enhanced low-level shear is possible over northwestern CA/coastal OR early in the period, the weak buoyancy should limit strong/severe storm potential. As large-scale ascent accompanying the jet streak/midlevel impulse continues east-southeastward into the Intermountain West, steep lapse rates/weak instability could favor very isolated thunderstorms, though coverage of such activity appears too low for a General Thunderstorm area. ..Weinman/Leitman.. 12/06/2023 Read more View the full article Quote Link to comment Share on other sites More sharing options...
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