• MESO: Mesoscale Discussion 1002

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, July 04, 2018 02:39:04
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    ACUS11 KWNS 040239
    SWOMCD
    SPC MCD 040238
    NEZ000-SDZ000-NDZ000-MTZ000-WYZ000-040445-

    Mesoscale Discussion 1002
    NWS Storm Prediction Center Norman OK
    0938 PM CDT Tue Jul 03 2018

    Areas affected...Western South Dakota...Far Northeast Wyoming...and
    Far Southeast Montana

    Concerning...Severe Thunderstorm Watch 259...

    Valid 040238Z - 040445Z

    The severe weather threat for Severe Thunderstorm Watch 259
    continues.

    SUMMARY...Storms continue across portions of Watch #259. Severe
    wind/hail potential remain.

    DISCUSSION...A storm cluster is moving northeast near the Montana,
    South Dakota, and North Dakota borders and a few cells are moving
    into southwest portions of Watch #259 including one severe warned
    storm. These storms are mostly sub-severe, but the environment
    (MLCAPE of 1500-3500 J/kg; effective bulk shear of 30-50 knots per mesoanalysis) remains conducive for severe hail/wind potential.
    Convective development is likely to increase and organize into a
    QLCS this evening as the low-level jet strengthens. LNX and GLD VAD
    data show the low-level jet already strengthening to 30-35 knots.
    This development would increase the potential for severe wind as the
    line organizes and cold pools are consolidated.

    ..Nauslar/Thompson.. 07/04/2018

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

    ATTN...WFO...ABR...BIS...LBF...UNR...CYS...BYZ...

    LAT...LON 45920497 45950310 45940164 42990143 43000465 45920497



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