• MESO: Mesoscale Discussion 0344

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Apr 2 04:05:26 2025
    ACUS11 KWNS 020404
    SWOMCD
    SPC MCD 020403=20
    MOZ000-KSZ000-NEZ000-020600-

    Mesoscale Discussion 0344
    NWS Storm Prediction Center Norman OK
    1103 PM CDT Tue Apr 01 2025

    Areas affected...Portions of the Central Plains

    Concerning...Severe Thunderstorm Watch 92...

    Valid 020403Z - 020600Z

    The severe weather threat for Severe Thunderstorm Watch 92
    continues.

    SUMMARY...Primary corridor of severe will sag southeast across
    central/eastern Kansas into northwest Missouri later tonight.

    DISCUSSION...Surface low has been dislodged off the higher terrain
    (just northwest of Woodward OK) and will soon begin to eject
    northeast toward northwest MO, in response to a strong mid-level
    jet. Downstream, LLJ continues to increase ahead of this feature and
    1km flow is now on the order of 60-70kt from central OK into eastern
    KS. 03z sounding from OUN verifies this with 60kt at 850mb, and 0-3
    SRH around 800 m2/s2. Intense low-level warm advection will continue
    to focus across eastern portions of the central Plains into the
    lower MO River Valley. Capping remains significant across OK and
    this likely contributed to the early demise of dryline activity by
    mid evening. For this reason, frontal convergence, along with warm
    advection, will be the primary forcing mechanisms for convection
    through the pre-dawn hours.

    Latest radar imagery suggests frontal convection continues to
    mature, and earlier discrete (including a few supercells) convection
    is becoming more linear with time. Even so, given the strength of
    the wind fields, embedded supercells may continue as the corridor
    sags southeast. Hail is expected with the stronger updrafts, and
    some wind threat may ultimately evolve if bowing structures can
    mature. Additionally, continued moistening suggests inflow parcels
    may be near-surface based, which would support a tornado risk with
    stronger supercells. If sufficient supercells were to emerge from
    this activity a tornado watch may be warranted. However, at this
    time a more complex storm mode currently exists.

    ..Darrow.. 04/02/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6RzaCDYpcU4cJqLD56VJqXyEvTvdbHk7iYCP-Mh9XLWO2XFt1xIhunCd5tUZfGYXDkQNCBRAL= j7pMLnpkZw1E1hgGgI$ for graphic product...

    ATTN...WFO...EAX...OAX...TOP...ICT...DDC...

    LAT...LON 37669948 39229667 40359515 39889433 38599572 37239877
    37669948=20

    MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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