• MESO: Mesoscale Discussion 0756

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Sun May 17 21:02:10 2026
    ACUS11 KWNS 172102
    SWOMCD
    SPC MCD 172101=20
    GAZ000-NCZ000-TNZ000-172300-

    Mesoscale Discussion 0756
    NWS Storm Prediction Center Norman OK
    0401 PM CDT Sun May 17 2026

    Areas affected...portions of central/northern Georgia

    Concerning...Severe potential...Watch unlikely=20

    Valid 172101Z - 172300Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Widely scattered thunderstorms will continue to pose some
    risk for isolated strong to damaging wind gusts and marginally
    severe hail for another couple of hours. Watch issuance is not
    expected.

    DISCUSSION...Latest regional radar imagery depicts ongoing pulse
    thunderstorms across portions of central/northern Georgia, with
    temperatures in the mid/upper 80s and low/mid 60s F dewpoints
    contributing to 1500-2000+ J/kg MLCAPE across the discussion area
    (per latest mesoanalysis and recent ATL ACARS profiles). Weak
    mid-level flow (evident in regional VWPs) and resultant weak
    effective shear within this moderately unstable environment are
    favoring pulse convection across the region. While buoyancy and PWAT
    values are more limited across northern Georgia compared to areas
    farther south, steep low-level lapse rates (8+ C/km) and PWAT values
    of 1.3-1.5 inches may support some potential for isolated
    strong/damaging wind gusts (likely in the 40-50 mph range) and small
    to marginally severe hail for another couple of hours. This severe
    potential is forecast to remain limited in coverage and magnitude.
    Convective activity is then expected to decrease with time this
    evening owing to low-level nocturnal cooling/stabilization.

    ..Chalmers/Smith.. 05/17/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!41hqckuQPD8u_fVm6j53w2w1BduNrrxptAmnt_BVM0Si-uX6LN8yvmrmLcfSjY_q5oVe7uc7V= Nd8Jw1Z0QG8Eqa-Qf8$ for graphic product...

    ATTN...WFO...GSP...MRX...FFC...

    LAT...LON 32548383 33088468 33798513 34398532 34848515 35028479
    35048427 34828372 34428331 33828297 33108289 32858292
    32638310 32528340 32548383=20

    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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    * Origin: Capitol City Online (1:2320/107)