Tag: dec

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0623 PM CST Tue Dec 03 2024 Valid 040100Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible through tonight along the lower/middle Texas Coast into central Texas, but severe thunderstorms are not expected. ...Discussion... An upper high will remain situated over the Pacific Northwest, with a large-scale upper trough from Northern Plains/Great Lakes to the East Coast. A low-latitude wave will move across the Gulf of CA, with modest midlevel flow around 40 kt nosing into southwestern TX by 12Z

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0659 AM CST Tue Dec 03 2024 Valid 031300Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible along the south Texas Coast, but severe thunderstorms are not expected. ...Discussion including South Texas... A persistent longwave trough over the eastern CONUS will be reinforced by an amplifying and southeastward-digging upper trough over the Canadian Prairies toward the Upper Midwest and Great Lakes through tonight. A continued prevalence of surface high pressure and cool/stable continental trajectories will considerably limit and spatially confine thunderstorm

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0628 PM CST Mon Dec 02 2024 Valid 030100Z - 031200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Threat for lightning is limited tonight. ...01z Update... Notable mid-level short-wave trough is digging southeast across the OH Valley early this evening. Seasonally cool, lower/mid- tropospheric profiles are resulting in steep lapse rates in the lowest 3-4km across much of the Great Lakes. While this is proving favorable for lake convection, lightning within the deeper, most robust updrafts has been limited. While a few strikes can not be ruled