• MESO: Mesoscale Discussion 2233

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tue Nov 25 23:33:06 2025
    ACUS11 KWNS 252333
    SWOMCD
    SPC MCD 252332=20
    MIZ000-WIZ000-MNZ000-SDZ000-NDZ000-260530-

    Mesoscale Discussion 2233
    NWS Storm Prediction Center Norman OK
    0532 PM CST Tue Nov 25 2025

    Areas affected...Central Minnesota into northern Wisconsin

    Concerning...Heavy snow=20

    Valid 252332Z - 260530Z

    SUMMARY...Heavy snowfall with rates upwards of 1-2 inches/hour will
    spread east/northeast across central Minnesota into northern
    Wisconsin through the evening hours. Additionally, strong winds will
    continue to support areas of blizzard conditions, especially in open
    country and under heavier snow bands.

    DISCUSSION...Latest radar mosaics and surface observations show an
    intense cyclone over the Twin Cities area. Aloft, ascent associated
    with a narrow, but strong, zone of warm advection between 850-700 mb
    is overlapping with lift within the left-exit region of a 500 mb
    jet, which is supporting a broad swath of moderate to heavy snowfall
    rates from the Sisseton hills in northeast SD into west-central MN.
    These ascent mechanisms will continue to be favorably phased over
    the next several hours, and will support 1-2 inch/hour snowfall
    rates across central MN to northern WI and parts of the Upper
    Peninsula as the cyclone and surface freezing line shift east. Given
    the focused corridor of mesoscale ascent, snow banding will be
    possible and may support locally higher snowfall rates in excess of
    2 inches/hour.=20

    In addition to the potential for heavy snowfall rates, 25-35 mph
    surface winds on the backside of the surface low are supporting
    areas of blizzard conditions with visibility below 1/4 mile recently
    noted on several web cams across western MN. Although temperatures
    will remain relatively warm (30-32 F), the combination of strong
    winds and moderate/heavy snowfall rates will continue to promote
    areas of blizzard conditions, especially across open country and
    under any heavier snow bands that develop.

    ..Moore.. 11/25/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5qCCD970emhN66OpDw5FcIHuik_ff-LDHfLl18awdIl1FDy157JiH3C3xstL69Erb3RnU5VQU= _TuvHb5-AWWGw8VtYs$ for graphic product...

    ATTN...WFO...MQT...GRB...DLH...MPX...FGF...ABR...

    LAT...LON 45009527 45909028 46048958 46278915 46658904 46938909
    47138947 47339003 47489078 47479145 47369210 47139315
    46369630 46169666 45909675 45029659 44919633 44949584
    45009527=20


    =3D =3D =3D
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