• MESO: Mesoscale Discussion 1657

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sunday, November 25, 2018 04:16:20
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    ACUS11 KWNS 250316
    SWOMCD
    SPC MCD 250315
    NEZ000-COZ000-WYZ000-250515-

    Mesoscale Discussion 1657
    NWS Storm Prediction Center Norman OK
    0915 PM CST Sat Nov 24 2018

    Areas affected...Far Southeast WY...Far northern CO...southern NE
    Panhandle

    Concerning...Heavy snow

    Valid 250315Z - 250515Z

    SUMMARY...An intense snow band will continue to produce
    near-whiteout conditions for the next 1-2 hours as it moves
    southward.

    DISCUSSION...At 03Z, an intense snow band is moving southward across
    far southeast WY and adjacent portions of north-central CO and the
    NE Panhandle. Heavy snow and wind gusts in excess of 40 kt have
    recently been observed with this band at Laramie and Cheyenne. This
    band is coincident with a powerful shortwave trough and attendant
    southward moving cold front, and near-whiteout conditions may
    persist with this band for at least the next 1-2 hours. Some
    realignment and/or redevelopment of this band may occur later this
    evening over northeast CO into southwest NE due to orographic
    effects and continued southeast movement of the primary shortwave
    trough and surface cold front, with the threat of at least transient
    whiteout conditions persisting.

    ..Dean.. 11/25/2018

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

    ATTN...WFO...LBF...BOU...CYS...

    LAT...LON 41090520 41750439 41870347 41580276 41200250 40550264
    40140314 40640450 40910542 41090520



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