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  • MESO: Mesoscale Discussion 0282

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Mar 29 19:39:21 2025
    ACUS11 KWNS 291934
    SWOMCD
    SPC MCD 291933=20
    SDZ000-NEZ000-292230-

    Mesoscale Discussion 0282
    NWS Storm Prediction Center Norman OK
    0233 PM CDT Sat Mar 29 2025

    Areas affected...Parts of northern NE into southern SD

    Concerning...Heavy snow=20

    Valid 291933Z - 292230Z

    SUMMARY...Occasional snow rates of locally greater than 1 inch per
    hour are possible this afternoon.

    DISCUSSION...A band of moderate to locally heavy precipitation is
    ongoing early this afternoon from western NE into western/central
    SD, with observations indicating a mix of snow, sleet, and
    rain/freezing rain ongoing across the region. This precipitation
    band is associated with a negatively tilted midlevel shortwave
    trough ejecting northeastward across central Great Plains.
    Frontogenesis near/above 700 mb will continue to support strong
    midlevel ascent that will extend through the dendritic growth zone,
    resulting the potential for at least localized heavy snow rates this afternoon.=20

    Marginal low-level temperatures will tend to delay the changeover to
    snow and limit snow-to-liquid ratios in some areas, but snow may
    increase near/above 1 inch per hour in areas that experience the
    heaviest precip rates. In addition, weak MUCAPE will support
    potential for occasional lightning and convective enhancement of
    rates along the eastern periphery of heavier precipitation, as the
    primary midlevel vorticity maximum moves northeastward. Some areas
    outside of the heaviest snow band may continue to experience
    occasional freezing rain and/or sleet through the afternoon.

    ..Dean.. 03/29/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4QTmSjfXnUHAnKOO4kIyViKKXQ6kgA_qhqpahGbm_8MWWPsNfRlpA92UJE10JTMxPRCsXjJTy= k4B3Jn3cZ95silRTxI$ for graphic product...

    ATTN...WFO...FSD...ABR...LBF...UNR...

    LAT...LON 42820171 43680095 44230015 44339917 43969889 43509892
    42819954 42000045 41950095 41990113 42000161 42130179
    42820171=20


    =3D =3D =3D
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