• MESO: Mesoscale Discussion 2211

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Nov 20 02:34:52 2025
    ACUS11 KWNS 200234
    SWOMCD
    SPC MCD 200234=20
    OKZ000-TXZ000-200430-

    Mesoscale Discussion 2211
    NWS Storm Prediction Center Norman OK
    0834 PM CST Wed Nov 19 2025

    Areas affected...Northwest Texas into northeast Oklahoma

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

    Valid 200234Z - 200430Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Isolated to widely scattered thunderstorms will continue
    to pose a large hail risk through the late evening hours. Overall,
    the threat should remain sufficiently isolated to preclude watch
    issuance.

    DISCUSSION...Over the past few hours, thunderstorms have gradually
    increased in coverage from the I-20 corridor in west-central TX to
    the OKC metro area with several supercell splits noted. While most
    cells have struggled to maintain intensity, possibly owing to
    weak/nebulous forcing for ascent and modest buoyancy profiles,
    storms that have acquired sufficient depth to realize the strong
    deep-layer shear over the region (40-50 knot 0-6 km BWD noted in
    regional VWPs) have been capable of severe hail, including very
    isolated significant (2 inch) hail.=20

    Going forward into the late evening hours, thunderstorm coverage
    should continue to slowly increase as broad-scale ascent persists
    and further lifts/erodes a lingering warm layer near 700 mb. This,
    coupled with increasing isentropic ascent over a warm frontal zone
    situated along the I-44/I-40 corridor, should help to offset the
    influence of nocturnal cooling/stabilization and maintain
    thunderstorm production. The expectation is for somewhat transient
    supercells capable of periodic intensification to severe limits.
    Hail remains the primary hazard with hail diameters between 1 to
    1.75 inches probable, though isolated instances of 2 inch hail
    appear possible given favorably elongated hodographs. However, given
    the dispersed and transitory nature of the storms, watch issuance is
    not expected.

    ..Moore/Smith.. 11/20/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-x47Pd0qf5yAcaUPUAnaK4co-zJ4_shA54VMvhtukaqpyAX9KuqsSjh9PyzClvQI36vc3UDJ_= bbXWBqRBdMkUpbTfjw$ for graphic product...

    ATTN...WFO...TSA...FWD...OUN...SJT...LUB...MAF...

    LAT...LON 32400155 33000110 35269835 35859726 36069619 35979577
    35859546 35669539 35429543 35049546 34709577 34219635
    33179860 32659935 32130004 31920053 31850095 31920138
    32120156 32400155=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 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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