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  • MESO: Mesoscale Discussion 1334

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sunday, July 03, 2022 03:41:11
    ACUS11 KWNS 030341
    SWOMCD
    SPC MCD 030340=20
    NDZ000-SDZ000-030545-

    Mesoscale Discussion 1334
    NWS Storm Prediction Center Norman OK
    1040 PM CDT Sat Jul 02 2022

    Areas affected...South Dakota...North Dakota

    Concerning...Severe Thunderstorm Watch 422...

    Valid 030340Z - 030545Z

    The severe weather threat for Severe Thunderstorm Watch 422
    continues.

    SUMMARY...A threat for wind damage and hail appears likely to
    continue for several more hours across WW 422. However, the threat
    should become more isolated after midnight, and additional weather
    watch issuance to the southeast of the ongoing watch, appears
    unlikely.

    DISCUSSION...Latest mosaic radar imagery shows a line of strong to
    severe storms located from northwest South Dakota into central North
    Dakota. A second line of strong storms is located to the east of
    Rapid City. These two lines could persist for several more hours.
    The corridor with the greatest severe potential could be across
    northwestern and north-central South Dakota, along the north edge of
    a corridor of stronger instability. The RAP forecast sounding at
    Mobridge, South Dakota at 06Z has 0-6 km shear near 45 knots, with a
    700-500 mb lapse rates around 7.5 C/km. This should be sufficient to
    continue a severe threat late this evening into the early overnight
    period. Wind damage will be the greatest threat, along the leading
    edge of the stronger downdrafts. Hail could also occur in the
    stronger updraft cores.

    ..Broyles.. 07/03/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8q_W4aJO7Qm-fNPkZ2w6423dZpdmzJAZVZBby5f_75MbxHuKSjKe_2Km5EgQCwjFutUJRofDi= GFJfl8Ygu8kBcxDHmA$ for graphic product...

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

    LAT...LON 46629901 45319908 44229933 43750006 43500103 43450179
    43650226 44040249 44750267 45480252 46100220 46790162
    47290120 47620068 47670019 47529957 47169927 46629901=20


    =3D =3D =3D
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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, June 29, 2023 12:59:34
    ACUS11 KWNS 291259
    SWOMCD
    SPC MCD 291258=20
    IAZ000-MOZ000-KSZ000-291430-

    Mesoscale Discussion 1334
    NWS Storm Prediction Center Norman OK
    0758 AM CDT Thu Jun 29 2023

    Areas affected...Portions of northern MO...extreme northeastern
    KS...and far southern IA

    Concerning...Severe Thunderstorm Watch 413...

    Valid 291258Z - 291430Z

    The severe weather threat for Severe Thunderstorm Watch 413
    continues.

    SUMMARY...The threat for significant damaging winds up to around 80
    mph will likely increase this morning across northern Missouri.

    DISCUSSION...A couple of supercells and bowing clusters are ongoing
    this morning across far northeastern KS, southwestern IA, and
    northern MO. The most intense cluster is across northwestern MO,
    where a recent measured wind gust to 68 kt (78 mph) has been
    observed. As the boundary layer continues to destabilize with
    diurnal heating, the very strong instability (MLCAPE 3000+ J/kg) and
    steep low/mid-level lapse rates will support an increasing threat
    for significant severe downdraft winds up to around 80 mph. The
    greatest threat for these substantial damaging winds will likely
    focus across northern MO where the primary bowing cluster should
    consolidate. Isolated large hail may also occur with any embedded
    supercells.

    ..Gleason.. 06/29/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6vKIG36XBYkAHr4EcgmNKh_fNORmlstHgKzFPrW2I06meLsfXaj8xln-7sjmjdHWZ2DkSrr8k= JD7mw_yAu2llvFc9AQ$ for graphic product...

    ATTN...WFO...LSX...DVN...DMX...EAX...

    LAT...LON 39569505 39709524 40449505 40739472 40729210 40579161
    40219154 39839158 39609199 39569505=20


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