• MESO: Mesoscale Discussion 1644

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Jul 11 20:16:54 2025
    ACUS11 KWNS 112016
    SWOMCD
    SPC MCD 112016=20
    KSZ000-OKZ000-TXZ000-112215-

    Mesoscale Discussion 1644
    NWS Storm Prediction Center Norman OK
    0316 PM CDT Fri Jul 11 2025

    Areas affected...portions of southeastern Kansas...northern Oklahoma
    and the far eastern Texas Panhandle.

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

    Valid 112016Z - 112215Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Scattered storm development later this afternoon may pose
    a risk for sporadic damaging gusts and some hail. A WW is unlikely.

    DISCUSSION...Boundary-layer destabilization is underway across much
    of the southern and central Plains ahead of a slow-moving cold
    front. Afternoon satellite imagery showed strong surface heating was
    resulting in gradual deepening of cumulus along and ahead of the
    front from eastern KS to northern OK. As continued heating and weak
    ascent from a passing upper-level trough overspread the area, a
    gradual increase in thunderstorms is expected this afternoon and
    evening. Focused largely along the front, modest vertical shear will
    favor a complex mode of multi cell clusters. 1500-2000 J/kg of
    MLCAPE observed from the 18z LMN/AMA soundings will support
    transient stronger updrafts capable of some hail with these storms.
    A deep and well-mixed boundary layer with prominent inverted-V
    structure should also support occasional stronger downdrafts capable
    of damaging gusts.

    Observational trends and recent CAM data suggest storm development
    will occur first along the front across eastern KS before spreading
    southwest into northern OK and the TX Panhandle. As storm clusters
    and outflow begin to amalgamate, the risk for damaging gusts will
    slowly increase into early evening. Given the limited storm
    organization a WW is not expected.

    ..Lyons/Mosier.. 07/11/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7ETbpWR-gNJp8nTBrC4XHlP1j9WrsswtmHPPplKebwxMiPpv_uCeHsaeCIgmiDZcuupJJGLM_= k9iwVvb94T6vhxmIPI$ for graphic product...

    ATTN...WFO...SGF...EAX...TSA...TOP...ICT...OUN...DDC...AMA...

    LAT...LON 37019997 37999749 38949637 39179588 38999514 38519471
    36849567 35339851 34950006 36400017 37019997=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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