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  • MESO: Mesoscale Discussion 1807

    From COD Weather Processor @1:2320/107 to All on Thursday, July 30, 2026 23:48:20
    ACUS11 KWNS 302348
    SWOMCD
    SPC MCD 302347
    SDZ000-310145-

    Mesoscale Discussion 1807
    NWS Storm Prediction Center Norman OK
    0647 PM CDT Thu Jul 30 2026

    Areas affected...portions of central and north-central South Dakota

    Concerning...Severe Thunderstorm Watch 534...

    Valid 302347Z - 310145Z

    The severe weather threat for Severe Thunderstorm Watch 534
    continues.

    SUMMARY...The potential for sporadic severe wind gusts and isolated
    large hail continues across portions of Severe Thunderstorm Watch
    534.

    DISCUSSION...Ongoing convection across western South Dakota has
    formed into a loosely organized cluster over the past 1-2 hours,
    with sporadic reports of severe wind gusts and an isolated report of
    1" hail noted with this activity. A narrow corridor of greater
    MLCAPE collocated with warmer surface temperatures and a local
    minimum in cloud cover exists downstream of this activity, with a
    convective outflow/differential heating boundary located farther to
    the east. This corridor of greater buoyancy will continue to support
    a risk for sporadic severe wind gusts and an instance or two of
    large hail over the next couple of hours as ongoing convection
    progresses east/southeastward. The overall severe risk should then
    gradually subside into the overnight hours as convection encounters
    a less unstable air mass.

    ..Chalmers.. 07/30/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!6uFfCI0d1Md_im_vRJHZGhHtGp5xhPuoBRWwjg6m1xKZ8hQtUaXPo6qM92ccjXO5HHCS6FKKjiBZhEULfcmeEgjAggI$ for graphic product...

    ATTN...WFO...ABR...UNR...

    LAT...LON 45370025 45200015 44869996 44589993 44260017 44010043
    43900064 43870093 43860143 43870151 43920223 44080229
    44460220 45000225 45240229 45390231 45580219 45720198
    45820175 45880105 45740055 45560037 45370025

    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


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    --- scorpsmtpd
    * Origin: capitolcityonline.net * KY, USA (1:2320/107)