• MESO: Mesoscale Discussion 0627

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Thu Apr 30 15:49:45 2026
    ACUS11 KWNS 301549
    SWOMCD
    SPC MCD 301549=20
    TXZ000-301745-

    Mesoscale Discussion 0627
    NWS Storm Prediction Center Norman OK
    1049 AM CDT Thu Apr 30 2026

    Areas affected...Central Texas

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

    Valid 301549Z - 301745Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Isolated occurrences of marginally severe hail are
    possible this morning. A watch is not anticipated.

    DISCUSSION...Elevated thunderstorms ongoing across portions of the
    Concho Valley and Hill Country have exhibited episodic
    intensification with volumetric radar data indicating some mid-level
    rotation with the strongest storms. The 12z DRT sounding suggests
    that convection is likely rooted around 850 mb, with modestly steep
    mid-level lapse rates of around 7.5 degrees C/km contributing to
    MUCAPE of 2500-3500 J/kg, at least in the Edwards Plateau region.
    However, more recent RAP-based forecast soundings suggest that
    parcel buoyancy is considerably weaker (500-1000 J/kg) farther east
    within the immediate inflow region of the ongoing storms, which may
    tend to limit the overall intensity of that convective regime.=20
    Nonetheless, the presence of 55-65 kt of effective bulk shear will
    be supportive of transient supercell structures, potentially capable
    of marginally severe hail.=20

    Current thinking is that any severe weather threat is expected to
    remain too limited in areal coverage and magnitude to warrant the
    issuance of a Severe Thunderstorm Watch.

    ..Mead.. 04/30/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7mO_T72LpB_4uRTyaEGSWDKoGTNehh-WKtdEFQKD403OSiJbsOeGXDlGMN8lkivbRuT8sw_EB= jeoi2JgcAErytGk2TQ$ for graphic product...

    ATTN...WFO...HGX...FWD...EWX...SJT...

    LAT...LON 31160059 31510028 31579831 31639608 31219572 30589592
    30289822 30620024 31160059=20

    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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