ZCZC SPCSWODY2 ALL ACUS02 KWNS 071720 SPC AC 071720 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1220 PM CDT Sat Sep 07 2024 Valid 081200Z - 091200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The organized severe-thunderstorm threat is expected to be low on Sunday. ...Synopsis... A deep trough is forecast to move eastward across eastern Canada and the northeast CONUS on Sunday, as an embedded mid/upper-level cyclone moves across parts of Quebec, New Brunswick, and northern New England. To the west, a midlevel shortwave trough will move across the interior Northwest, to the north of a mid/upper-level ridge. A surface ridge covering much of the eastern CONUS will prevent return of richer low-level moisture from near the Gulf Coast. This will limit destabilization and organized severe potential across most of the CONUS. Thunderstorms will be possible from the Carolinas/Georgia to the immediate Gulf Coast, where richer moisture will persist near and north of a surface front. A few strong storms may develop across the central/northern FL Peninsula, where the relative best overlap of instability and modest flow aloft is currently forecast. Weak convection with sporadic lightning flashes could move across parts of the Great Lakes, in conjunction with a pocket of cold temperatures aloft. Isolated to scattered high-based convection will be possible from the central High Plains into parts of the central/southern Rockies, Great Basin, and Southwest, which may produce locally strong gusts. Some strong-gust potential could also accompany isolated storm development across the interior Northwest, in association with the shortwave trough moving across the region. ..Dean.. 09/07/2024 $$