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  • MESO: Mesoscale Discussion 0195

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, March 13, 2019 20:38:06
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 131938
    SWOMCD
    SPC MCD 131937
    NEZ000-SDZ000-COZ000-WYZ000-132330-

    Mesoscale Discussion 0195
    NWS Storm Prediction Center Norman OK
    0237 PM CDT Wed Mar 13 2019

    Areas affected...Eastern Wyoming...Northeast Colorado...the Nebraska Panhandle...and far southwest South Dakota

    Concerning...Blizzard

    Valid 131937Z - 132330Z

    SUMMARY...Blizzard conditions are ongoing across the Front Range of
    the Rockies eastward into the Nebraska Panhandle and Black Hills.
    Heavy snow, very strong winds, and extremely limited visibilities
    are ongoing. These conditions are expected to persist through the
    afternoon.

    DISCUSSION...A deep surface cyclone, analyzed at 971-972mb in
    southeast Colorado at 19Z, will slowly shift east through the
    afternoon. Northwest of this surface low, blizzard conditions are
    being observed in much of the Front Range of the Rockies. The
    highest wind speeds have been observed just east of the mountains in
    Colorado where wind gusts have been observed at 79 mph in both
    Denver and Colorado Springs. These locally extreme wind gusts should
    start to subside by 22-23Z as the surface cyclone moves eastward.
    These wind speeds combined with heavy snow and falling temperatures
    have led to increasingly low visibilities of 1/8 mile or less in
    this area. Expect these conditions to persist for a few more hours
    with perhaps worsening whiteout conditions with visibilities down to
    100 meters as snow becomes drier through time and more prone to
    blowing.

    Blizzard conditions are also occurring across much of eastern
    Wyoming and southwest South Dakota, but winds are not as extreme as
    areas farther south.

    ..Bentley.. 03/13/2019

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

    ATTN...WFO...LBF...UNR...GLD...PUB...BOU...CYS...

    LAT...LON 39440313 39020329 38350378 38050421 38140460 38650500
    39600547 40550577 41500589 42430590 43380561 44080474
    44510399 44510316 43970216 42310205 40490258 39720292
    39440313



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