• MESO: Mesoscale Discussion 2120

    From COD Weather Processor @1:2320/107 to All on Mon Aug 24 22:30:20 2026
    ACUS11 KWNS 242229
    SWOMCD
    SPC MCD 242229
    MNZ000-NDZ000-250100-

    Mesoscale Discussion 2120
    NWS Storm Prediction Center Norman OK
    0529 PM CDT Mon Aug 24 2026

    Areas affected...Parts of eastern North Dakota and northwestern
    Minnesota

    Concerning...Severe potential...Watch likely

    Valid 242229Z - 250100Z

    Probability of Watch Issuance...80 percent

    SUMMARY...The severe risk will increase from west to east over the
    next few hours. The primary concerns will be large to very large
    hail and severe wind gusts. A watch will likely be needed in the
    next hour or so.

    DISCUSSION...The latest Day Cloud Phase satellite imagery indicates
    deepening boundary-layer cumulus along a surface front/wind shift in
    parts of central ND -- immediately east-northeast of Bismarck. In
    the near term, isolated convective initiation will be possible along
    the wind shift, as earlier capping at the base of the EML (sampled
    by the BIS 18Z sounding) continues to erode amid an increasingly
    warm/unstable PBL. Steep midlevel lapse rates atop the warm/moist
    PBL and an elongating/mostly straight holograph (around 40-50 kt of
    effective shear) will conditionally support discrete supercells
    capable of producing large to very large hail and locally severe
    wind gusts. However, weak large-scale forcing for ascent limits
    confidence in both the coverage and evolution of this initial storm development.

    Over the next few hours, increasing ascent accompanying a midlevel
    wave to the north should support an increase in storm coverage along
    the surface front. The aforementioned environment will promote an
    increasing risk of scattered supercells capable of producing large
    hail and severe wind gusts. With time and eastward extent, upscale
    growth into organized clusters could pose an increasing risk of
    severe wind. A watch will likely be needed in the next hour or so.

    ..Weinman/Thompson.. 08/24/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!-ytLhrCTw7EkbT77YDt9_opAfKb-fBphV9L_dmi2_sT10RCDtRGQvgHaQvaF8lmgl_YjNuH9hSZ1PcBKYGtkLjmzi5w$ for graphic product...

    ATTN...WFO...FGF...BIS...

    LAT...LON 46190025 46590041 47090031 47979967 48629920 49099903
    49169866 49209809 49129680 48739658 48309653 47729655
    47199679 46629730 46229794 46039880 46049976 46190025

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


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