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  • MESO: Mesoscale Discussion 0058

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, January 28, 2019 09:43:40
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    ACUS11 KWNS 280843
    SWOMCD
    SPC MCD 280842
    MIZ000-INZ000-WIZ000-ILZ000-281245-

    Mesoscale Discussion 0058
    NWS Storm Prediction Center Norman OK
    0242 AM CST Mon Jan 28 2019

    Areas affected...Southeast WI...Northern IL...Western Lower MI

    Concerning...Heavy snow

    Valid 280842Z - 281245Z

    SUMMARY...Heavy snowfall will continue across southeast WI and
    northern IL, eventually spreading northeastward into western Lower
    MI.

    DISCUSSION...Heavy snowfall (i.e. +SN and 1/4 mi visibility) has
    been reported at numerous locations across southeast WI and northern
    IL during the past few hours. Both RFD and MKE explicitly reported
    over 1" in the past hour. Expectation is for this heavy snowfall to
    continue gradually shifting eastward, with the highest snowfall
    rates occurring along the western edge of the precipitation shield
    where warm-air advection/frontogenesis is the strongest. Snowfall
    rates will generally be around 1"/hr but isolated instances of rates
    of 2"/hr are possible.

    Pivoting of this clipper system will result in an
    eastward/northeastward translation of the elevated frontogenesis
    over the next few hours with a resulting expansion of the
    precipitation shield into western Lower MI. Snowfall rates around
    1"/hr are possible in this region beginning around 10-11Z.

    ..Mosier.. 01/28/2019

    ...Please see www.spc.noaa.gov for graphic product...

    ATTN...WFO...APX...IWX...GRR...GRB...LOT...MKX...DVN...

    LAT...LON 42689009 43758911 44348613 43488483 42418494 41818589
    41588676 41248915 41839004 42689009



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