• MESO: Mesoscale Discussion 1049

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jun 14 21:14:33 2023
    ACUS11 KWNS 142114
    SWOMCD
    SPC MCD 142114=20
    ARZ000-TXZ000-OKZ000-142215-

    Mesoscale Discussion 1049
    NWS Storm Prediction Center Norman OK
    0414 PM CDT Wed Jun 14 2023

    Areas affected...Southeastern Oklahoma and central Arkansas

    Concerning...Severe potential...Watch likely=20

    Valid 142114Z - 142215Z

    Probability of Watch Issuance...80 percent

    SUMMARY...The risk for large hail and damaging winds may increase
    this afternoon and evening. Supercells with large to very large hail
    and damaging winds are the main risk. A new Weather Watch may be
    needed.

    DISCUSSION...In the wake of early day convection, new development
    has been noted in the recovering air mass across far eastern OK and
    central AR. Strong heating and unseasonably steep mid-level lapse
    rates of 8-9 C/km were supporting 2500-300 J/kg of MLCAPE with 60-70
    kt of effective shear from SPC mesoanalysis. As storms evolve and
    mature, the cape/shear space, supercell mode, and very steep lapse
    rates will favor large hail production with the more intense storms. Significant hail (2+ in) also appears possible. Storms should
    persist into this evening with a continued severe risk across
    central and possibly eastern AR. A new Weather Watch is likely
    needed this afternoon and evening.

    ..Lyons/Mosier.. 06/14/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-7PLIKU8iEONiBk1NK_FXsjFtZ_9JDfcumlR41ISE3yXNSBNnNXUttj-ng511uw5ShYdK_xo7= IqMmYzwf4OijV6qYXA$ for graphic product...

    ATTN...WFO...LZK...SHV...TSA...FWD...OUN...

    LAT...LON 33599191 33599394 33669485 33749538 33809548 34089581
    34269578 34989500 35199430 35189348 35079255 34659162
    33999136 33629142 33599191=20


    =3D =3D =3D
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