• MESO: Mesoscale Discussion 2077

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Dec 30 07:22:37 2022
    ACUS11 KWNS 300722
    SWOMCD
    SPC MCD 300721=20
    LAZ000-TXZ000-300945-

    Mesoscale Discussion 2077
    NWS Storm Prediction Center Norman OK
    0121 AM CST Fri Dec 30 2022

    Areas affected...Far Southeast Texas...Far Southwest Louisiana

    Concerning...Severe potential...Watch unlikely=20

    Valid 300721Z - 300945Z

    Probability of Watch Issuance...5 percent

    SUMMARY...An isolated severe threat will likely continue across far
    southeast Texas and far southwest Louisiana over the next few hours.
    Marginally severe winds and a brief tornado will be the primary
    threats.

    DISCUSSION...The latest WSR-88D radar imagery from Houston shows a
    frontal band of convection across southeast Texas, with scattered
    storms located ahead of the front from the Houston and Galveston
    areas eastward toward the Louisiana state line. Some of the
    convection has organized into a line, while other more discrete
    cells are supercellular. The strongest rotating cells are located to
    the east of Galveston and Trinity Bays between Houston and Beaumont.
    Although instability is relatively weak along the coast to the east
    of Houston, the WSR-88D VWP has 0-6 km shear of 35 to 40 knots, with
    0-3 km storm relative helicity around 160 m2/s2. In addition,
    surface frictional effects could be enhancing low-level shear a bit
    more just inland from the coast. As a result, the discrete cells
    that are located 15 to 20 statute miles inland, could remain
    supercellular for a couple more hours and may have a potential for
    isolated damaging wind gusts and/or a brief tornado. As the front
    approaches from the west, linear mode is expected to become favored.
    As this occurs, a downward trend in the severe threat is expected
    later tonight.

    ..Broyles/Edwards.. 12/30/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7_gF2yRHbsZQymGTszawsrOPWmQuHV1oH6mYr4vRRo4mjjYa3pzRAV6INkxZ_rwwvt7QZb3m8= oAvnAJqB3KYztxCKgU$ for graphic product...

    ATTN...WFO...LCH...HGX...

    LAT...LON 29589398 29759351 30019341 30229352 30279393 30029464
    29759509 29499516 29269497 29299470 29589398=20


    =3D =3D =3D
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

    --- SBBSecho 3.14-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)
  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Sep 3 22:20:46 2023
    ACUS11 KWNS 032220
    SWOMCD
    SPC MCD 032220=20
    WYZ000-IDZ000-UTZ000-NVZ000-040145-

    Mesoscale Discussion 2077
    NWS Storm Prediction Center Norman OK
    0520 PM CDT Sun Sep 03 2023

    Areas affected...far northeast Nevada and northern Utah into eastern
    Idaho

    Concerning...Severe Thunderstorm Watch 664...665...

    Valid 032220Z - 040145Z

    The severe weather threat for Severe Thunderstorm Watch 664, 665
    continues.

    SUMMARY...Strong to severe storms will move out of Utah and into
    eastern Idaho producing a few damaging gusts or marginal hail.

    DISCUSSION...A cluster of storms is currently moving rapidly
    northward across Box Elder County UT, with indications of severe
    gust and marginal hail potential. Visible imagery shows an area of
    relatively better heating extending into eastern ID, with is also
    within the surface theta-e plume. Given the meridional deep-layer
    shear vector orientation and values over 40 kt, the severe threat is
    expected to increase through this corridor over the next few hours.

    ..Jewell.. 09/03/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9LWzc4tK96T09ssjj6hQHU_wuO9jQF1zexFOEuGXSeqt4wmY9x-KYTowUsvqRKXualQ-De-_s= zCgJP6K4Cb7nzHZvSg$ for graphic product...

    ATTN...WFO...RIW...SLC...PIH...LKN...

    LAT...LON 41471415 41751408 42001361 42281323 43031272 43711245
    44091235 44311202 44371165 44221111 43461085 42161131
    41761155 41371196 41241239 41141292 41121329 41071362
    41111389 41471415=20


    =3D =3D =3D
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

    --- SBBSecho 3.14-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)