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  • MESO: Mesoscale Discussion 1361

    From COD Weather Processor@1:2320/105 to [email protected] on Fri Jun 21 20:59:27 2024
    ACUS11 KWNS 212059
    SWOMCD
    SPC MCD 212058=20
    MTZ000-212230-

    Mesoscale Discussion 1361
    NWS Storm Prediction Center Norman OK
    0358 PM CDT Fri Jun 21 2024

    Areas affected...Central Montana

    Concerning...Severe Thunderstorm Watch 442...

    Valid 212058Z - 212230Z

    The severe weather threat for Severe Thunderstorm Watch 442
    continues.

    SUMMARY...The severe thunderstorm threat continues for WW 442. The
    threat for damaging winds and hail is greatest in Central MT where
    two isolated supercells have developed and begun tracking
    east-southeast. Local WW extension may be needed further N into
    Phillips County due to a southeastward moving supercell in Blaine
    County.

    DISCUSSION...Thunderstorm coverage has increased this afternoon over
    the northern Rockies in W MT, with clusters of cells beginning to
    move off of the higher terrain into the better buoyancy and shear.
    These cells are capable of producing 1+ inch hail and damaging
    winds.=20

    In Central MT, two isolated supercells have developed and begun
    moving east-southeast. These storms are in an environment of
    1000-1500 J/kg MLCAPE and 45-50 kts of deep layer shear, supporting
    a continued damaging wind and large hail threat.=20

    Further east in Blaine County, near the Canadian border, a storm has
    developed that may track outside of the watch area, warranting local
    WW extension.

    ..Halbert/Weinman.. 06/21/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-wt3jZYNgH0Dj1752GDA7f_pVxsKSfCcYNPI7BnOSyptoIEQl5CcN3PFvCdCEWUGS_ncSP-1_= IoBWpEu5VNHppUMgKU$ for graphic product...

    ATTN...WFO...BYZ...GGW...TFX...

    LAT...LON 47721223 47991270 48401317 48731307 48871264 48831217
    48871114 48881046 48890977 48880900 48880860 48810822
    48660797 48510776 48320765 47980753 47570733 47310725
    47000719 46680716 46410744 46250788 46210863 46210888
    46180898 46180954 46241042 46361076 46631113 46901149
    47151176 47451185 47721223=20


    =3D =3D =3D
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