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  • MESO: Mesoscale Discussion 0191

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, March 13, 2019 11:00:35
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 131000
    SWOMCD
    SPC MCD 130959
    SDZ000-NEZ000-WYZ000-131400-

    Mesoscale Discussion 0191
    NWS Storm Prediction Center Norman OK
    0459 AM CDT Wed Mar 13 2019

    Areas affected...portions of far northwest NE into central SD

    Concerning...Winter mixed precipitation

    Valid 130959Z - 131400Z

    SUMMARY...A narrow corridor of rain changing to and/or mixing with
    freezing rain and sleet is expected for a few hours this morning.

    DISCUSSION...Surface temperature observations from far northwest NE
    into southwest and south-central SD are running a few degrees warmer
    compared forecast guidance as of 09z. This is resulting in mainly
    rain with the band of precipitation lifting northward into southern
    SD currently. However, as the surface low over eastern CO continues
    to intensify early this morning, colder air over northern SD will
    shift southward with time as northeasterly low level flow
    strengthens. As such, a narrow corridor of rain should mix with
    frozen precip types before transitioning to freezing rain and sleet
    further north over the next couple of hours. This freezing rain and
    sleet should persist for a few hours this morning before a
    stronger/deeper cold surge works southward and a transition to all
    snow occurs later this afternoon.

    ..Leitman.. 03/13/2019

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

    ATTN...WFO...FSD...ABR...LBF...UNR...CYS...

    LAT...LON 43530395 44170208 44480074 44649989 44659939 44569916
    44339895 44079898 43789934 43330042 42870219 42670338
    42860404 43090413 43530395



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