• MESO: Mesoscale Discussion 0806

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Wed May 20 19:53:30 2026
    ACUS11 KWNS 201953
    SWOMCD
    SPC MCD 201953=20
    TXZ000-202200-

    Mesoscale Discussion 0806
    NWS Storm Prediction Center Norman OK
    0253 PM CDT Wed May 20 2026

    Areas affected...Parts of the TX Trans-Pecos and Permian Basin

    Concerning...Severe potential...Watch possible=20

    Valid 201953Z - 202200Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Severe storms with a threat of large hail and localized
    severe gusts may develop later this afternoon into the early
    evening.

    DISCUSSION...A large area of primarily elevated and disorganized
    convection is ongoing this afternoon from near Lubbock to Midland to
    west of Del Rio. Moderate MUCAPE and marginally favorable deep-layer
    shear could support occasional intensification of these elevated
    storms, with a threat for isolated hail.=20

    Farther west, storms are gradually increasing in the vicinity of the
    Davis Mountains, with a continued increase in coverage possible as a low-amplitude midlevel shortwave trough approaches the region from
    northern Mexico. Stronger heating has occurred in this area,
    along/south of a baroclinic zone, and convection in this area could
    evolve into more organized surface-based storms, with sufficient
    deep-layer shear for supercell development. Moderate to locally
    strong buoyancy and steep midlevel lapse rates will support
    potential for large to very large hail, if any surface-based
    supercells can evolve with time. Localized severe gusts will also be
    possible, especially in areas along/south of the front, where
    steeper low-level lapse rates are in place.=20

    Coverage of severe storms later this afternoon into the early
    evening remains uncertain, but watch issuance is possible if
    development of multiple sustained severe storms appears imminent.

    ..Dean/Hart.. 05/20/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8u_YjNfyMfmF2Pl0eJ2y6wRn8okGEvgi0yzxorU43zFuFl8ywoMGrMSYm4rxjvVnx407zCr27= PXLIXCry7HOahZjdx8$ for graphic product...

    ATTN...WFO...EWX...SJT...MAF...

    LAT...LON 29770462 31010408 31810334 31930206 31870141 31750124
    30650096 30220090 29760124 29390228 29260247 29090270
    28880311 28830346 29160435 29770462=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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    * Origin: Capitol City Online (1:2320/107)