• MESO: Mesoscale Discussion 0512

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Apr 21 17:28:50 2025
    ACUS11 KWNS 211728
    SWOMCD
    SPC MCD 211728=20
    TNZ000-GAZ000-ALZ000-MSZ000-LAZ000-212000-

    Mesoscale Discussion 0512
    NWS Storm Prediction Center Norman OK
    1228 PM CDT Mon Apr 21 2025

    Areas affected...central/southern Mississippi...central/northern Alabama...south-central Tennessee

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

    Valid 211728Z - 212000Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Marginal risk for gusty winds and hail through the
    afternoon and evening.

    DISCUSSION...Thunderstorm activity has been ongoing across a cold
    front extending through the southeastern states this morning. Ahead
    of this feature, breaks in the cloud cover have allowed daytime
    heating and modest MLCAPE around 500-1500 J/kg to develop. Flow
    across this region is fairly weak, though some deep layer shear
    20-35 knots is observed in surface objective analysis. As storms
    move north and eastward this afternoon, potential for a few areas of
    gusty winds and small hail will be possible. Severe potential
    appears too limited for watch issuance to be needed.

    ..Thornton/Hart.. 04/21/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!512M-XrQv-BpYd18ZtNadndo3H-cJPMonEj9cVrtoIC6S7yuZWSrRrLOslt46a07W-RlJ8pmZ= 55IIhaGG32ZBpezM7w$ for graphic product...

    ATTN...WFO...MRX...FFC...OHX...BMX...HUN...MOB...MEG...JAN...
    LIX...LCH...

    LAT...LON 32359100 34078895 34988766 35488672 35598618 35568570
    35518555 35418525 34988505 32058795 30378982 29949059
    30199162 30559195 30949207 32359100=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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