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  • MESO: Mesoscale Discussion 1367

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, August 27, 2018 03:55:39
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 270355
    SWOMCD
    SPC MCD 270355
    MNZ000-SDZ000-NDZ000-270600-

    Mesoscale Discussion 1367
    NWS Storm Prediction Center Norman OK
    1055 PM CDT Sun Aug 26 2018

    Areas affected...the eastern Dakotas into northwest Minnesota

    Concerning...Tornado Watch 351...

    Valid 270355Z - 270600Z

    The severe weather threat for Tornado Watch 351 continues.

    SUMMARY...The threat of a few storms persists across WW 351 and 352.
    The primary threats will continue to be wind and hail.

    DISCUSSION...Storms currently extend from northwest MN across
    eastern ND, ahead of the primary shortwave trough, and in a zone of
    low-level warm advection. Other isolated activity also persists
    across east-central SD where the cold front is moving slower. Storm
    mode has generally transitioned from cellular to mixed-mode, with
    more of a linear mode along the main frontal surge from ND into MN.
    As such, the threat has transitioned to more of a damaging wind
    threat, along with hail in some of the stronger storm cores. The
    overall tornado threat appears to be lessening both due to storm
    mode, and increasing surface-based CIN. That said, the presence of
    ample low-level shear ahead of the cold front and favorable
    deep-layer shear may support embedded areas of rotation or a
    brief/weak tornado in the more unstable areas with dewpoints near 70
    F.

    ..Jewell.. 08/27/2018

    ...Please see www.spc.noaa.gov for graphic product...

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

    LAT...LON 44699641 44369733 44309808 44399837 44629840 45919809
    46639800 47439729 48359705 49069681 49419528 49439478
    49129395 48819346 48449321 47739316 47129386 46579510
    46319581 45809607 44699641



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