• MESO: Mesoscale Discussion 0321

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Wed Apr 1 20:53:15 2026
    ACUS11 KWNS 012053
    SWOMCD
    SPC MCD 012052=20
    MOZ000-OKZ000-KSZ000-012245-

    Mesoscale Discussion 0321
    NWS Storm Prediction Center Norman OK
    0352 PM CDT Wed Apr 01 2026

    Areas affected...Parts of northeast OK...southeast KS...southwest MO

    Concerning...Severe potential...Watch possible=20

    Valid 012052Z - 012245Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Isolated severe storm development is possible through late
    afternoon, with increasing coverage of storms expected into the
    evening.

    DISCUSSION...In the wake of convection moving across parts of
    southern MO, heating/destabilization is underway from parts of
    northeast OK/southeast KS into southwest MO, near and south of a
    diffuse northward-moving warm front. Objective mesoanalyses and the
    18Z LMN sounding (modified for observations near/south of the front)
    suggest that MLCAPE has risen into the 1000-1500 J/kg range, with
    steep lapse rates in the 800-500 mb layer. With some residual
    capping and generally modest large-scale ascent, potential for storm redevelopment near the warm front this afternoon is uncertain.
    However, short-term guidance continues to suggest potential for
    isolated development by late afternoon, within a modest low-level warm-advection regime.=20

    Deep-layer shear is relatively modest as of mid afternoon, but
    should gradually increase from west to east as mid/upper-level flow
    increases ahead of an approaching shortwave trough. A supercell or
    two could develop by late afternoon in the vicinity of the warm
    front, where effective shear/SRH will be locally enhanced. Any such
    development would be accompanied by a threat for hail, locally
    damaging wind, and possibly a tornado.=20

    Watch issuance is possible later this afternoon, if confidence
    increases in the development of organized storms. Another potential
    round of severe storms is still expected later this evening, as the
    primary mid/upper-level shortwave trough begins to impinge upon the
    region.

    ..Dean/Hart.. 04/01/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_jEmyKlw5WRaqGRWKbPfNt3sxyg1UmUoLtogPQbHjdnX0GCgiRVRxn8TtDYUXiGySzvtJhenN= XTiw8fc38fyv-g0A4w$ for graphic product...

    ATTN...WFO...SGF...EAX...TSA...TOP...ICT...

    LAT...LON 36319669 37299675 37719630 37969597 38149571 38479498
    38489371 38059282 37609265 37159296 36909337 36819367
    36519490 36179604 36319669=20

    MOST PROBABLE PEAK TORNADO INTENSITY...100-130 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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    * Origin: Capitol City Online (1:2320/107)