• Winter Advisory WI/MI-UP

    From Mike Powell@618:250/1 to All on Sun Mar 30 17:17:00 2025
    ACUS11 KWNS 301907
    SWOMCD
    SPC MCD 301907
    MIZ000-WIZ000-310000-

    Mesoscale Discussion 0302
    NWS Storm Prediction Center Norman OK
    0207 PM CDT Sun Mar 30 2025

    Areas affected...Northern Wisconsin into the Upper Peninsula of
    Michigan

    Concerning...Winter mixed precipitation

    Valid 301907Z - 310000Z

    SUMMARY...Another round of moderate to heavy snow and sleet/freezing
    rain is expected to spread across northern Wisconsin into the Upper
    Peninsula of Michigan.

    DISCUSSION...Recent surface observations across northern WI report a
    mix of sleet/freezing rain to the west/northwest of the Green Bay,
    WI area and light to moderate snow across northern/northwest WI.
    This precipitation is expected to increase in coverage and intensity
    as it spread northeastward through early evening amid strengthening
    warm advection between 925-850 mb and within the 700 mb deformation
    zone. The steady warm advection will also maintain a warm nose
    between 1-2 km AGL that will continue to promote sleet and freezing
    rain through the afternoon. Latest guidance continues to suggest
    that freezing rain rates between 0.05 to 0.1 inch/hour are probable
    across far northeast WI into the southern areas of the U.P. A
    gradual eastward shift of the warm nose is anticipated through late
    afternoon, which should result in sub-freezing temperatures
    throughout the column. This thermodynamic trend, coupled with
    organized precipitation banding, should promote areas of moderate to
    heavy snowfall rates between 1-2 inch/hour across northern WI into
    western parts of the U.P.

    ..Moore.. 03/30/2025

    ATTN...WFO...APX...MQT...GRB...DLH...ARX...MPX...

    LAT...LON 45788479 45798560 45768645 45508720 45178788 44968863
    44928914 44958965 44969031 44989085 44999120 45309159
    45709159 46099149 46409129 46679091 46749063 46819026
    47058924 47118813 47088674 46998561 46848474 46658406
    46398371 46188349 45918341 45808351 45778417 45788479

    $$
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