MD 0945 CONCERNING SEVERE POTENTIAL…WATCH UNLIKELY FOR EASTERN FL PENINSULA
Mesoscale Discussion 0945 NWS Storm Prediction Center Norman OK 1238 PM CDT Wed Jun 07 2023 Areas affected...eastern FL Peninsula Concerning...Severe potential...Watch unlikely Valid 071738Z - 071945Z Probability of Watch Issuance...5 percent SUMMARY...Thunderstorm coverage will increase through the afternoon. Strong gusts to 45-50 mph and small hail will be possible with the strongest storms as they shift east from the central Peninsula and offshore of the east coast. DISCUSSION...Thunderstorm coverage and intensity is gradually increasing across the FL Peninsula early this afternoon, with a recent gust to 39 kt reported at KBKV. A seasonally moist airmass is in place, with surface dewpoints generally from 68-72 F. While midlevel lapse rates will remain poor, strong heating of this moist airmass has aided in moderate instability, with MLCAPE values around 1500-2000 J/kg noted. This should promote periodic strong updrafts amid marginal effective shear. Shear will remain somewhat marginal for long-lived, organized structures, but very steep low-level lapse rates from the central into eastern parts of the Peninsula will support water-loaded downbursts. Isolated strong gusts to 45-50 mph will be possible. While midlevel lapse rates are poor, regional VWP data show elongated hodographs. Additionally, cooler temperatures at 500 mb (around -11 C) may be sufficient for small hail in stronger/more robust thunderstorm cores. Overall, severe-caliber wind/hail is expected to remain sparse, and a watch is not expected. ..Leitman/Grams.. 06/07/2023 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MFL...MLB...TBW...JAX... LAT...LON 29508146 29238098 28028032 26527992 25528005 25358038 25518073 26288105 27298140 28188171 28778177 29178168 29508146