• MESO: Mesoscale Discussion 0542

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Sun Apr 26 04:43:26 2026
    ACUS11 KWNS 260443
    SWOMCD
    SPC MCD 260442=20
    LAZ000-ARZ000-TXZ000-OKZ000-260645-

    Mesoscale Discussion 0542
    NWS Storm Prediction Center Norman OK
    1142 PM CDT Sat Apr 25 2026

    Areas affected...northeastern Texas...southwestern
    Arkansas...northwestern Louisiana

    Concerning...Severe Thunderstorm Watch 147...

    Valid 260442Z - 260645Z

    The severe weather threat for Severe Thunderstorm Watch 147
    continues.

    SUMMARY...Severe threat continues within WW147.

    DISCUSSION...A pair of supercells continue to track south and east
    southeastern Arkansas. These cells have a history of producing hail
    up to 2.75 inches in diameter and continue to have high MESH cores.
    In the short term, these will pose the greatest severe risk with the
    primary threat being large to very large hail. While these storms
    are likely elevated, should they be able to continue southward into
    the warmer air and vicinity of more backed surface flow, a tornado
    could be possible.

    CAM guidance seems to suggest that eventually, storms will cluster
    and move across northern Louisiana through the morning. This may
    lead to a shift in potential for strong to severe wind. Given the
    diurnal stabilizing of the boundary layer, winds may not make it to
    the surface keeping this threat isolated.

    ..Thornton.. 04/26/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!84L7b4WtvWrf6857FxF1s3vLvJlWO4W3hoFOYoRNurK2pQowGKX93bmxvyJpZI3YqUyukEY5t= dn2DxKdCBGJm-L0oA8$ for graphic product...

    ATTN...WFO...LZK...SHV...

    LAT...LON 33689513 34069364 33999312 33439229 33049221 32699221
    32309231 32189308 32439390 32749474 32879501 33689513=20

    MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN


    =3D =3D =3D
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