• MESO: Mesoscale Discussion 0142

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Feb 9 08:58:44 2023
    ACUS11 KWNS 090858
    SWOMCD
    SPC MCD 090858=20
    IAZ000-MOZ000-091400-

    Mesoscale Discussion 0142
    NWS Storm Prediction Center Norman OK
    0258 AM CST Thu Feb 09 2023

    Areas affected...northern MO into southeast IA

    Concerning...Heavy snow=20

    Valid 090858Z - 091400Z

    SUMMARY...Rain changing to snow will spread across northern Missouri
    into southeast Iowa early this morning. Snowfall rate may approach 1
    inch per hour at times.

    DISCUSSION...Large-scale ascent associated with a compact shortwave
    trough will lift northeast across the Lower MO/Mid-MS Valley early
    this morning. Furthermore, a band of 850-700 mb frontogenesis
    oriented across northern MO/southern IA will result in increasing
    precipitation this morning, within the warm conveyor north of a
    midlevel low. While surface temperatures will hover near freezing
    (30-34 degrees), large-scale ascent through a deep saturated layer,
    and a sufficient dendritic growth zone, should allow for rain
    changing to snow after 10z. The dendritic growth layer is somewhat
    shallow and rather high aloft, which may limit snowfall efficiency
    some. Nevertheless, localized areas of near 1 inch per hour snowfall
    rate are possible in the 10-14z time frame across parts of northern
    MO into southeast IA.

    ..Leitman.. 02/09/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-CjnqwIwTWrM6cXVuc39OgdyP1sbRp7P2fbJ_1K29Jifw7KEN0SwmIpr1SDvY4d7T2qtsVALH= sCcJE4nhJ9fwDW-sw8$ for graphic product...

    ATTN...WFO...LSX...DVN...DMX...EAX...

    LAT...LON 41139355 41729263 41959188 41989136 41669118 41169131
    40529170 40009233 39629301 39379373 39399444 39589469
    40149456 40409438 40749405 41139355=20


    =3D =3D =3D
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