• MESO: Mesoscale Discussion 0942

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Mon Jun 1 21:55:10 2026
    ACUS11 KWNS 012155
    SWOMCD
    SPC MCD 012154=20
    OKZ000-TXZ000-NMZ000-020000-

    Mesoscale Discussion 0942
    NWS Storm Prediction Center Norman OK
    0454 PM CDT Mon Jun 01 2026

    Areas affected...portions of the Oklahoma Panhandle southward toward
    the US-Mexico Border

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

    Valid 012154Z - 020000Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Thunderstorms will likely continue to develop along the
    dryline from western Oklahoma panhandle south toward Mexico. The
    main severe threat should be strong, gusty thunderstorm outflows.

    DISCUSSION...A surface dryline exists across far western portions of
    the Oklahoma Panhandle south to the US-Mexico border. To the east of
    the dryline surface dewpoints are generally in the 50F range,
    although some observations have recently mixed into the upper 40Fs,
    with dewpoints to the west in the 30Fs to low 40Fs range.

    Surface convergence along this boundary is not overly strong with
    winds on either side of the boundary generally having a southerly
    component to them. That said, loops of recent water vapor imagery
    shows a belt of large-scale ascent moving east out of the
    Southwest/southern Rockies and overspreading the dryline. In turn,
    latest visible imagery shows the cumulus field along the dryline
    becoming a bit more agitated, with increased vertical development.
    in response to the large-scale ascent, with increasing mid-level
    echoes now depicted on radar across portions of the northwest Texas
    Panhandle and far western Oklahoma panhandle. Additional
    thunderstorms have developed farther east across the Texas panhandle
    in an area of better surface moisture, likely the result of strong
    boundary layer circulations and local terrain effects owing to the
    caprock. Lastly, marginally severe thunderstorms have also developed
    in far southwest Texas.

    The thermodynamic environment all along the dryline is sufficient
    for thunderstorms, with MUCAPE ranging from around 1000 J/kg along
    the dryline to early 3000 J/kg farther east. Kinematically speaking,
    however, deep-layer shear is rather anemic, with generally less than
    20-25 knots analyzed. Given the degree of instability, continued
    vertical mixing associated with deepening boundary layer
    circulations will likely support additional thunderstorm development
    along the dryline. The lack of deep-layer shear should limit the
    overall organization of the storms, favoring pulse-type cellular
    convection, but a few multi-cell clusters may also evolve. Given the
    deepening boundary layer, this cells will likely be high-based, with increasingly dry sub-cloud layers (especially across western
    portions of the highlighted area) with a tendency to produce strong,
    cold outflows capable of isolated damage.=20

    The isolated nature of the severe threat should preclude the need
    for a watch, but the region will be monitored for any areas where
    thunderstorm organization might occur.

    ..Marsh/Guyer.. 06/01/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8sWSI5RL7NlvuljrM365324jcreId9WHL3lTGB4zsGO7cWXvvL7W4IGXK-jCsInqucuAwvhX-= 5Ig84FpWf0PE5wBblw$ for graphic product...

    ATTN...WFO...OUN...SJT...LUB...AMA...MAF...ABQ...

    LAT...LON 29420425 34340367 36480312 36940296 36950181 36969996
    36659972 36149944 35389955 34839970 34350024 30980217
    29660262 29130278 28940305 28900317 29150393 29420425=20

    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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