Storm Prediction Center Mesoscale Discussion 446
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Mesoscale Discussion 446 | |
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Mesoscale Discussion 0446 NWS Storm Prediction Center Norman OK 0351 PM CDT Fri Apr 11 2025 Areas affected...northern Florida Concerning...Severe potential...Watch unlikely Valid 112051Z - 112315Z Probability of Watch Issuance...5 percent SUMMARY...Several storms may produce small hail and locally gusty winds through late afternoon. DISCUSSION...Surface temperatures have risen into the upper 70s to near 80 F this afternoon, as temperatures aloft continue to cool. A very steep lapse rate environment has developed with 500 mb temperature to -20 C into parts of the FL Panhandle and northern FL. A few thunderstorms have already formed along the surface trough extending from the Panhandle into extreme southeast GA, with indications of small/non-severe hail. Moisture is the limiting factor to storm severity today, with low dewpoints spreading southward. Even so, convective coverage may continue to increase over the next couple hours as lapse rates are maximized. Although low PWAT overall, the deepened boundary layer along with low freezing levels and lengthy hodographs will work together to produce primarily non-severe hail. Boundary layer winds remain relatively weak, therefore any strong to potentially damaging gust would likely be localized (but possibly aided by cold hail-laden outflow). ..Jewell/Gleason.. 04/11/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...TBW...JAX...TAE... LAT...LON 30028555 30338467 30628282 31068144 30828138 30158126 29728107 28948262 29128307 29598353 29928389 29898419 29768449 29568500 29628522 29768546 30028555 MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN |
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2025-04-11 20:53:08