• MESO: Mesoscale Discussion 0234

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Thu Mar 12 19:13:46 2026
    ACUS11 KWNS 121913
    SWOMCD
    SPC MCD 121913=20
    MNZ000-SDZ000-NDZ000-122115-

    Mesoscale Discussion 0234
    NWS Storm Prediction Center Norman OK
    0213 PM CDT Thu Mar 12 2026

    Areas affected...portions of southern North Dakota and northern
    South Dakota into extreme western Minnesota

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

    Valid 121913Z - 122115Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Showers/thunderstorms may bring isolated strong to severe
    wind gusts to portions of the Dakotas and extreme western Minnesota
    this afternoon. Watch issuance is not anticipated.

    DISCUSSION...Latest RAP-based mesoanalysis and forecast soundings
    depict the development of very weak buoyancy across portions of the
    northern Great Plains this afternoon amidst steep low-level lapse
    rates. Confidence in this scenario remains low given very limited
    buoyancy and low-level moisture (surface dewpoints in the mid-20s
    F). Isolated lightning flashes have been noted over the past 30-60
    minutes, however, indicating the development of a couple marginally
    deeper cores. This shallow convection may augment very strong
    northwesterly low-to-mid level flow (40-50+ kt at 1-2 km AGL per
    regional VWPs), supporting the potential for isolated strong to
    severe wind gusts.

    ..Chalmers/Gleason.. 03/12/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6OZvdqET5M9ZVqIFdiLnGEVQWLMwNLeSy5Bhp9bq_N7T7ZBmz0HWsmVz2OYc2p1IMuOKa8FID= -y8sdkvZGuZFZAySUY$ for graphic product...

    ATTN...WFO...MPX...FGF...FSD...ABR...BIS...UNR...

    LAT...LON 46010338 46210355 46560356 46980335 47080291 47130202
    47100106 46980030 46809925 46569812 46339742 45959639
    45739627 45439613 45069622 44719654 44519716 44469798
    44639906 44849990 45260102 45470168 45800267 46010338=20

    MOST PROBABLE PEAK WIND GUST...65-80 MPH


    =3D =3D =3D
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    * Origin: Capitol City Online (1:2320/107)