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  • MESO: Mesoscale Discussion 0508

    From COD Weather Processor@1:2320/107 to [email protected] on Thu Apr 23 22:27:36 2026
    ACUS11 KWNS 232227
    SWOMCD
    SPC MCD 232226=20
    OKZ000-240130-

    Mesoscale Discussion 0508
    NWS Storm Prediction Center Norman OK
    0526 PM CDT Thu Apr 23 2026

    Areas affected...southwest into south-central Oklahoma

    Concerning...Tornado Watch 137...

    Valid 232226Z - 240130Z

    The severe weather threat for Tornado Watch 137 continues.

    SUMMARY...Conditions are favorable for a supercell or two, with very
    large hail and tornado risk primarily over southwest into
    south-central Oklahoma.

    DISCUSSION...Visible satellite imagery shows towering CU along the
    dryline from southwest OK where temperatures have risen into the 90s
    F. Meanwhile, gusty south/southeast winds have maintained upper 60s
    F dewpoints east of the dryline. Given cool midlevel temperatures
    and steep lapse rates, this is resulting in an area of very strong instability.=20

    Notably, GPS PWAT sensors indicate relatively greater values near
    the Red River and south into TX, while drier air aloft is more
    evident into central OK currently.=20

    The dryline is expected to back westward later this evening, while
    the low-level jet also increases rapidly into the 40-50 kt range.
    Since the moist sector is not cool, the entire area should remain
    quite unstable, and several models suggest an isolated supercell
    will be possible. If this occurs, very large hail and a tornado risk
    is evident. Forecast hodographs indicate a relatively slow storm
    motion to the east for a right-moving supercell.

    ..Jewell/Hart.. 04/23/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4IFf9VoCjxMeO6G4jhmDK3EHrAVxjZ3QR83U-B7_VcHxQlYsrJlOs3p0D_YS_77iZkHnj04hn= pcPWDhwJ3gQoZAYJL0$ for graphic product...

    ATTN...WFO...OUN...

    LAT...LON 34749908 35139890 35259862 35289806 35259784 35209769
    35119758 34829751 34519764 34369806 34279905 34399923
    34749908=20

    MOST PROBABLE PEAK TORNADO INTENSITY...120-145 MPH
    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
    MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN


    =3D =3D =3D
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