• MESO: Mesoscale Discussion 1211

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Jun 8 23:19:38 2025
    ACUS11 KWNS 082319
    SWOMCD
    SPC MCD 082318=20
    LAZ000-TXZ000-090045-

    Mesoscale Discussion 1211
    NWS Storm Prediction Center Norman OK
    0618 PM CDT Sun Jun 08 2025

    Areas affected...portions of northern and eastern Texas to extreme
    western Louisiana

    Concerning...Severe Thunderstorm Watch 397...

    Valid 082318Z - 090045Z

    The severe weather threat for Severe Thunderstorm Watch 397
    continues.

    SUMMARY...Multiple supercells will continue to traverse a diffuse
    baroclinic boundary and pose a risk for severe hail and wind over
    the next few hours. A greater severe risk is expected to evolve
    later this evening with other storms that approach from the west.

    DISCUSSION...Multiple mature supercells are in progress across
    northern TX to the LA border along a diffuse baroclinic boundary.
    Severe hail has been reported with some storms, and current MRMS
    mosaic MESH data suggests that 2-3 inch hail may be falling with the
    more dominant supercells. Given the 4000-5000 J/kg MLCAPE and 50+
    kts of effective bulk shear still in place, these storms should
    continue to pose a significant-severe hail and wind risk for at
    least a few more hours.

    Eventually, supercells across the southeast TX Panhandle should
    merge into an MCS as they approach from the west. While the exact
    timing and evolution of this scenario is still somewhat uncertain,
    the general thinking is that a bow echo with an organized
    significant severe wind swath will approach the region, with peak
    gusts in the 70-100 mph range. Future MCDs will be written for
    northern TX as this scenario comes closer to fruition.

    ..Squitieri.. 06/08/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4-jEiUxCJx-YNRNDZVs13SAg05LbONhQw3zYYcYcnJSL1O_mGxvwScSCAzrzdSb800wPgmG5-= CNGDgYeA80Vl4ADCXo$ for graphic product...

    ATTN...WFO...SHV...HGX...FWD...

    LAT...LON 32339849 33249714 33389634 32619403 31859365 31469384
    31469495 31769664 32009798 32339849=20

    MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
    MOST PROBABLE PEAK WIND GUST...75-90 MPH
    MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN


    =3D =3D =3D
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