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  • MESO: Mesoscale Discussion 0185

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Mar 3 17:02:08 2024
    ACUS11 KWNS 031702
    SWOMCD
    SPC MCD 031701=20
    NDZ000-032100-

    Mesoscale Discussion 0185
    NWS Storm Prediction Center Norman OK
    1101 AM CST Sun Mar 03 2024

    Areas affected...North Dakota

    Concerning...Heavy snow=20

    Valid 031701Z - 032100Z

    SUMMARY...Heavy snowfall rates between 1-2 inches/hour should
    continue through late morning/mid afternoon across portions of
    central to northern North Dakota.

    DISCUSSION...Over the past hour, surface observations have reported
    visibility reductions down to 1/2 to at times 1/4 mile with
    corroborating observations from regional web cams. These visibility
    reductions are most likely attributable to heavy snowfall rates
    rather than blowing snow given the weak winds (generally less than
    10 knots) and warm temperatures in the upper 20s to low 30s. Ascent
    through a deep layer is evident over central/northern ND owing to
    upper-level diffluence ahead of an upper trough axis overlaid with a
    plume of isentropic ascent within the 850-700 mb layer. This
    combination of synoptic and more focused mesoscale ascent should
    continue to promote widespread moderate snowfall across
    central/northern ND over the next several hours with heavier rates
    up to 1-2 in/hour within more organized snow bands. Lightning
    flashes and cooling cloud-top temperatures have been observed over
    the past hour within this zone of strong ascent, indicating that
    weak convection may locally augment snowfall rates as well.

    ..Moore.. 03/03/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_z2n8Ig731GW6G5XfQXJfwaXYHV8AHLUeNkJjZnqMRhdKrO69WvMJgjTCUBflwlVIlZ2V7efL= LAep5yQ7a8zFE_qvZE$ for graphic product...

    ATTN...WFO...FGF...BIS...

    LAT...LON 47299952 46959961 46680002 46470065 46500123 47200227
    47900292 48620336 48890344 49060339 49090296 49070213
    49070065 49070029 48760014 48419997 47859972 47299952=20


    =3D =3D =3D
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