• MESO: Mesoscale Discussion 0550

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Apr 25 00:09:32 2025
    ACUS11 KWNS 250008
    SWOMCD
    SPC MCD 250007=20
    OKZ000-KSZ000-250130-

    Mesoscale Discussion 0550
    NWS Storm Prediction Center Norman OK
    0707 PM CDT Thu Apr 24 2025

    Areas affected...Northwest Oklahoma into far southern Kansas

    Concerning...Severe Thunderstorm Watch 170...

    Valid 250007Z - 250130Z

    The severe weather threat for Severe Thunderstorm Watch 170
    continues.

    SUMMARY...The severe weather threat for all hazards (hail, damaging
    winds, and a tornado or two) continues across WW 170, particularly
    where supercells have developed and begun to move east-southeast
    across portions of northern Oklahoma. This threat will continue into
    the early evening hours.

    DISCUSSION...Supercells along the Kansas/Oklahoma border have taken
    on an east-southeast storm motion as mid and low-level mesocyclones
    have matured. These storms are capable of all hazards, having
    already produced 2.5" hail and a tornado.=20

    VAD wind profiles from KDDC and KVNX don't show an overall abundance
    of storm-relative helicity, but do indicate some curvature of the
    hodograph in the lowest levels. Additionally, current surface
    mesoanalysis indicates these storms exist within an area of locally
    enhanced surface vorticity. With the onset of the nocturnal
    low-level jet, in addition to the observed southeastward storm
    motion, SRH is expected to increase into the early evening and
    support a continued threat for all hazards, including tornadoes. The
    greatest short-term threat for continued tornado development will be
    with the southeastern-most storm, with unimpeded inflow and a
    favorable storm motion vector. The tornado threat will diminish into
    the evening hours as the nocturnal boundary layer stabilizes, but
    all supercells will be capable of 2.0+" hail and 65-85 MPH wind
    gusts.

    ..Halbert.. 04/25/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4PeIsBGWbwkaYGmLZ85yvoYoDG4T1dhJGAwrNhMPrCz0RCuk_wSClMfCpB-EmtxjEDcks2nVT= PvGw0vGMoKw-1KuXDQ$ for graphic product...

    ATTN...WFO...OUN...DDC...AMA...

    LAT...LON 37090027 37300009 37359983 37309940 37199886 37029838
    36819810 36649811 36429820 36229839 36179865 36159905
    36229940 36369964 36619994 36760014 36930027 37090027=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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