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  • MESO: Mesoscale Discussion 1858

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jul 31 23:34:14 2025
    ACUS11 KWNS 312332
    SWOMCD
    SPC MCD 312332=20
    NEZ000-COZ000-SDZ000-WYZ000-010100-

    Mesoscale Discussion 1858
    NWS Storm Prediction Center Norman OK
    0632 PM CDT Thu Jul 31 2025

    Areas affected...Southeast WY...northeastern CO...and the NE
    Panhandle

    Concerning...Severe Thunderstorm Watch 563...

    Valid 312332Z - 010100Z

    The severe weather threat for Severe Thunderstorm Watch 563
    continues.

    SUMMARY...The risk of severe wind gusts will continue expanding
    eastward over the next several hours. A downstream watch is not
    currently expected, though local spatial extensions of the watch may
    be warranted.

    DISCUSSION...Loosely organized storm clusters are tracking eastward
    across southeastern WY and northeastern CO this evening, which will
    continue posing a risk of severe wind gusts. These storms are
    evolving along a larger-scale cold pool which is spreading/expanding
    eastward into a moderately unstable air mass. Recent radar data
    indicates new updrafts developing along the leading outflow
    boundary, and around 40 kt of gust-front-orthogonal effective shear
    may be supporting the development of a loosely organized MCS with
    eastward extent. The risk of scattered severe wind gusts (60-70 mph)
    is the primary concern, prior to increasing nocturnal static stability/inhibition tonight. A downstream watch is not currently
    expected, though local spatial extensions of Severe Thunderstorm
    Watch 563 may be warranted.

    ..Weinman.. 07/31/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4E-vIN7EMdo9poumUS8Fv3Xjc3xPWc84N6B3lJibEdX22z5Y3HWcD-cbx4ul3gs2Shm2yACI2= doW1PHvsi7Jhp-L3wE$ for graphic product...

    ATTN...WFO...UNR...BOU...CYS...RIW...

    LAT...LON 40150456 41740457 42140493 42600610 42870609 43140569
    43200458 43020361 42610295 41180268 40240304 40010371
    40150456=20


    =3D =3D =3D
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