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  • MESO: Mesoscale Discussion 2348

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tue Dec 26 10:34:09 2023
    ACUS11 KWNS 261033
    SWOMCD
    SPC MCD 261033=20
    KSZ000-SDZ000-NEZ000-COZ000-WYZ000-261600-

    Mesoscale Discussion 2348
    NWS Storm Prediction Center Norman OK
    0433 AM CST Tue Dec 26 2023

    Areas affected...Western South Dakota...eastern Wyoming...northeast Colorado...western Nebraska Panhandle...northwest Kansas

    Concerning...Heavy snow=20

    Valid 261033Z - 261600Z

    SUMMARY...Heavy snow, with rates in excess of one inch/hour, will
    continue across much of the discussion area through mid morning. In
    addition, strong surface winds with frequent gusts between 40 and 50
    kts, will result in blizzard conditions in some areas.

    DISCUSSION...Regional radar composite imagery depicts a rather large
    area of moderate to heavy snow extending from western SD southward
    over eastern WY/western NE Panhandle and into parts of northeast
    CO/northwest KS at 1025z. This precipitation is associated with a
    pronounced zone of 850 mb warm air advection, on the western
    periphery of a pronounced dry slot associated with the occluded
    cyclone over the central Plains. An impressive flow of moisture
    with the warm conveyor belt will continue to feed into the western
    portion of the cyclone (across the discussion area), and combine
    with lobes of vorticity rotating around the upper low to produce
    lift for areas of moderate/heavy snow to continue through at least
    mid morning. Snowfall rates of one inch/hour will remain possible.

    Although the surface low should continue to weaken with time, the
    surface pressure gradient across this area will support frequent
    wind gusts of 40 to 50 kts through mid morning, resulting in areas
    of near-blizzard/blizzard conditions.

    ..Bunting.. 12/26/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_cxCv1RLaIhYV2S0nOPHVIUsb2CqM9_MMZ1eDv4bYBLHJBMw6Au7eVKlwHX--m9GJe9jmLPPe= k01pwaRd4B_X_Hnpzs$ for graphic product...

    ATTN...WFO...LBF...UNR...GLD...BOU...CYS...

    LAT...LON 41990548 44920408 45230354 45280185 44780133 43660140
    41790333 40680317 40070220 39620153 39360107 38760105
    38590165 38910269 39510392 40010452 41310560 41990548=20


    =3D =3D =3D
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