ZCZC SPCSWOMCD ALL ACUS11 KWNS 221623 SPC MCD 221623 FLZ000-221800- Mesoscale Discussion 0505 NWS Storm Prediction Center Norman OK 1123 AM CDT Mon Apr 22 2024 Areas affected...Far southeast FL Concerning...Severe potential...Watch unlikely Valid 221623Z - 221800Z Probability of Watch Issuance...5 percent SUMMARY...A marginally severe storm with hail up to around 1.25 inches in diameter and wind gusts to 60 mph will be possible over the greater Miami metro area during the next 2-3 hours. A watch is not expected. DISCUSSION...A southward-sagging cold front extends from Palm Beach to mainland Monroe counties as of 16Z. Surface temperatures ahead of it across the remaining portion of the peninsula have warmed into the mid 80s F while dew points have mixed into the upper 60s. This is supporting moderate buoyancy with MLCAPE from 1000-1500 J/kg. A recent increase in agitated CU and small CBs along it suggest that a storm or two may develop despite the prevailing westerly low-level wind profile. 25-30 kt effective bulk shear, primarily driven by an increase in speed with height, should be sufficient for a marginal severe threat. With 500-mb temperatures near -11 C, hail magnitudes from 0.75-1.25 inches, along with locally strong wind gusts of 45-60 mph should be the expected hazards. ..Grams/Smith.. 04/22/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MFL... LAT...LON 26028042 26258018 26217997 25608005 25428019 25448042 25758049 26028042 NNNN