Mesoscale Discussion 2121 NWS Storm Prediction Center Norman OK 0602 PM CDT Thu Sep 26 2024 Areas affected...Much of the Florida Peninsula and far southern Georgia Concerning...Tornado Watch 683...685... Valid 262302Z - 270030Z The severe weather threat for Tornado Watch 683, 685 continues. SUMMARY...The tornado threat across much of the Florida Peninsula and southern Georgia will continue well into the evening hours. A replacement tornado watch will be needed soon. DISCUSSION...The latest satellite, lightning, and radar imagery associated with Helene, and its extrapolation, continue to suggest the potential for several more bands of low-topped thunderstorms extending over much of the FL Peninsula and far southern GA through tonight. Increasing low-level flow associated with Helene remains apparent on the TBW VWP, with a slow increase of around 5-10 kt of shear observed in the lowest 1 km over the past hour. Although buoyancy will slowly decrease overnight, the aforementioned shear will yield 0-1 km SRH around 400-700 m2/s2 for several hours within all eastern quadrants of Helene. Brief tornadoes are expected within this zone of substantial, increasing low-level shear as far north as the eastern FL Panhandle. A new tornado watch will likely be issued within the next hour. ..Barnes/Gleason.. 09/26/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MFL...MLB...TBW...JAX...TAE... LAT...LON 26358186 26408217 27508271 28008289 28828268 29228296 29878364 30308469 30998466 31658321 31648210 31198152 29758092 27218083 26358186
Storm Prediction Center Mesoscale Discussion 2121
26
Sep