• MESO: Mesoscale Discussion 0031

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Jan 3 16:07:11 2022
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    ACUS11 KWNS 031607
    SWOMCD
    SPC MCD 031606=20
    NJZ000-PAZ000-MDZ000-DEZ000-VAZ000-DCZ000-032100-

    Mesoscale Discussion 0031
    NWS Storm Prediction Center Norman OK
    1006 AM CST Mon Jan 03 2022

    Areas affected...Portions of the Mid-Atlantic

    Concerning...Heavy snow=20

    Valid 031606Z - 032100Z

    SUMMARY...Heavy snow, with rates of 1-2 inches per hour, will
    continue to shift east-northeastward this afternoon while gradually
    diminishing from west to east.

    DISCUSSION...A pronounced mid/upper-level cyclone centered over the
    Carolinas and southern VA at 16Z will move quickly
    east-northeastward through the afternoon and off the Atlantic Coast.
    Strong low/mid-level frontogentic forcing on the north side of this
    cyclone continues to support a band of moderate to heavy snow
    extending from parts of north-central NC into VA/DC/MD/DE, and
    southern NJ. Lift through the saturated dendritic growth zone,
    current radar presentation of the snow band, and multiple surface
    observations all suggest that heavy snowfall, with rates of 1-2
    inches per hour, will likely continue as the band shifts slowly east-northeastward towards the coast through the afternoon. On the
    southeast periphery of the heavy snow band, rain ongoing across
    parts of southeastern VA should transition to mainly snow as the low
    level thermal profile cools with continued low-level cold advection.
    In tandem with the overall system motion, snow will gradually
    diminish from west to east across the Mid-Atlantic over the next
    several hours.

    ..Gleason.. 01/03/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!trYdb8IWql5V6-RBd5pzSFX4ucPRjqQFn4GePAtT8YpCL-PWXdfsDvGOgYNG1m69ol2DFF-G$=
    for graphic product...

    ATTN...WFO...PHI...AKQ...LWX...RNK...

    LAT...LON 37567589 36887704 36757789 36817864 37347908 38947749
    39927555 40457424 40437385 39637404 38847457 37917532
    37567589=20



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