• MESO: Mesoscale Discussion 1995

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Aug 20 19:51:37 2025
    ACUS11 KWNS 201951
    SWOMCD
    SPC MCD 201950=20
    NCZ000-GAZ000-TNZ000-ALZ000-202115-

    Mesoscale Discussion 1995
    NWS Storm Prediction Center Norman OK
    0250 PM CDT Wed Aug 20 2025

    Areas affected...northeast Alabama...northwest Georgia...and
    portions of southeast Tennessee

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

    Valid 201950Z - 202115Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Isolated severe wind gusts are possible this afternoon.

    DISCUSSION...A cluster of storms has developed across southeast
    Tennessee. As these storms, and associated outflow, move south, they
    will encounter increasing instability with temperatures in the upper
    80s to low 90s and dewpoints in the mid 70s yielding 2500 J/kg
    MLCAPE. Despite the favorable thermodynamic environment, shear is
    quite weak (flow less than 20 knots in the entire troposphere on the
    HTX VWP). This weak shear will likely result in mostly unorganized
    storms with strong outflow. Stronger cores/water loading will
    support the threat for microbursts, particularly where boundary
    collisions occur. Expect the greatest severe threat to shift south
    through the remainder of the afternoon and into the evening as
    outflow continues to progress south.

    ..Bentley/Gleason.. 08/20/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6K2SL85V3HDI3TD4RjUzXXcHZ5yMF3GbsJAvg2qhLQ95p8ak08pURBWkIo0zvGrEiqhC0uDSI= H-6KShCdfwEuueCY98$ for graphic product...

    ATTN...WFO...MRX...FFC...OHX...BMX...HUN...

    LAT...LON 34108738 35258617 35718500 35568432 34848410 34008453
    33348479 32868617 33268694 34108738=20

    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH


    =3D =3D =3D
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