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  • MESO: Mesoscale Discussion 2034

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Dec 15 23:16:50 2021
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    ACUS11 KWNS 152316
    SWOMCD
    SPC MCD 152316=20
    IAZ000-MNZ000-MOZ000-160115-

    Mesoscale Discussion 2034
    NWS Storm Prediction Center Norman OK
    0516 PM CST Wed Dec 15 2021

    Areas affected...much of central and northern Iowa...far southern
    Minnesota

    Concerning...Tornado Watch 563...

    Valid 152316Z - 160115Z

    The severe weather threat for Tornado Watch 563 continues.

    SUMMARY...Damage is likely to occur in association with a rapidly
    moving line of storms across Iowa, northern Missouri, and eventually
    far southern Minnesota, with a few fast-moving tornadoes possible as
    well.

    DISCUSSION...A particularly damaging line of storms currently
    extends from a low over northwest IA southward into northwest MO and
    eastern KS, and is moving east/northeast at 75-85 mph. Several
    measured sig-severe wind gusts have been measured recently, and this
    is likely to continue. Further, effective SRH currently ranges from
    400-600 m2/s2 across western IA and points south, suggesting brief,
    but possibly fast-moving embedded QLCS tornadoes are clearly a
    threat. Destabilization due to the spread of a moist air mass will
    eventually occur over southern MN behind a diffuse warm front, and
    tornadoes will be a concern as the low continues to deepen.

    ..Jewell.. 12/15/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!uT7teCwfjxHhpD_byXkloWQ7BdlvWQQM2hSsyreoKBFf1_V4baRESvBNqX1YBR-helMmMIog$=
    for graphic product...

    ATTN...WFO...MPX...DMX...EAX...FSD...OAX...

    LAT...LON 40719490 41329482 41839497 42529526 42949570 42999574
    43409534 43799466 44029337 43789311 43109308 42209314
    41509318 40999345 40709392 40499447 40489471 40569492
    40719490=20



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