• MESO: Mesoscale Discussion 1587

    From COD Weather Processor @1:2320/107 to All on Sat Jul 11 18:27:42 2026
    ACUS11 KWNS 111827
    SWOMCD
    SPC MCD 111827
    FLZ000-GAZ000-ALZ000-112030-

    Mesoscale Discussion 1587
    NWS Storm Prediction Center Norman OK
    0127 PM CDT Sat Jul 11 2026

    Areas affected...portions of North Florida and the Florida Panhandle
    into southern Georgia

    Concerning...Severe potential...Watch unlikely

    Valid 111827Z - 112030Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Widely scattered thunderstorms will bring a risk for
    occasionally damaging downburst winds through this evening.

    DISCUSSION...Latest GOES visible satellite imagery and lighting data
    depict ongoing thunderstorm development along the Gulf Coast sea
    breeze across portions of North Florida. Expectation is for
    thunderstorm coverage to gradually increase along this boundary over
    the next hour or two amid continued diurnal heating. Aided by westerly/southwesterly low-to-mid tropospheric flow, storms will
    then progress northeastward into southern Georgia. While deep-layer
    flow and effective shear remain weak (less than 30 kts of flow
    sampled below 200 mb by the 18z JAX observed sounding), moderate
    buoyancy, steep low-level lapse rates, and PW exceeding 1.7 inches
    will promote a risk for an outflow dominant storm mode and
    water-loaded downbursts capable of occasional damaging wind gusts
    (generally 45-55 mph with a localized gust to 55-65 mph possible).
    Given the expectation for the severe risk to remain relatively
    isolated and limited in magnitude, watch issuance appears unlikely
    at this time.

    ..Chalmers/Smith.. 07/11/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!4FfSag2v0nJMxAalF_RouwjXfcjq9X7tIRvtD_sgIVicfAfMoy2ygzI6tlJDz9ZiGmKKmvtwy-QyHqBzYGw6Ab_vuVs$ for graphic product...

    ATTN...WFO...CHS...MLB...TBW...JAX...FFC...TAE...

    LAT...LON 30568551 30128545 29818531 29678508 29698475 29758458
    29838439 29918420 29918404 29868388 29628359 29208310
    28958286 28738276 28368265 28048250 27908226 27748177
    27818137 28118100 28428085 28948081 29438100 30298136
    30688140 31138132 31468114 31648111 31978135 32168174
    32268223 32278293 32178342 31978394 31718451 31458499
    31168531 30778543 30568551

    MOST PROBABLE PEAK WIND GUST...55-70 MPH


    = = =
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.
    --- scorpsmtpd
    * Origin: capitolcityonline.net * KY, USA (1:2320/107)