• MESO: Mesoscale Discussion 1117

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jun 5 16:04:12 2025
    ACUS11 KWNS 051604
    SWOMCD
    SPC MCD 051603=20
    OKZ000-TXZ000-051800-

    Mesoscale Discussion 1117
    NWS Storm Prediction Center Norman OK
    1103 AM CDT Thu Jun 05 2025

    Areas affected...TX Panhandle

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

    Valid 051603Z - 051800Z

    Probability of Watch Issuance...40 percent

    SUMMARY...An isolated threat for large hail may develop through
    midday but the overall severe risk/evolution remain uncertain. Will
    monitor convective trends for the possibility of a Watch.

    DISCUSSION...Visible-satellite/radar mosaic shows thunderstorms
    developing within a moist/warm conveyor in the TX Panhandle
    primarily to the north of I-40. There appears to be an arcing
    stationary standing wave-like feature that this convection
    initiated. Surface analysis indicates a relatively stable/moist
    near-surface layer with temperatures in the mid 60s deg F and
    dewpoints in the lower 60s. Some thinning of the stratus is
    expected over the next few hours beneath a capping layer likely near
    750 mb (per 12 UTC Midland raob). It is unclear whether this
    convection is able to transition to become surface-based over the
    next few hours.=20=20

    The Amarillo, TX WSR-88D VAD shows flow veering and strengthening
    with height to around 50-kt at 7 km AGL and an elongated hodograph.=20 Expecting continued but gradual thinning of the stratus and heating
    of the boundary layer to result in a very unstable airmass
    developing during the early to mid afternoon as MLCAPE increases
    from 1000 to 3000+ J/kg. Given this increase in buoyancy and shear
    supporting supercells, the recently developed late morning updrafts
    may become supercellular and pose a risk for large hail over the
    next 1-2 hours. Low confidence exists regarding the convective
    scenario towards the early afternoon.

    ..Smith/Thompson.. 06/05/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_VnyxWwsXbkZCT6AUBOdzN0cozwp66MBBL_ia_uIWBm0Oq9bwgAD0VNXNS5MgWd-BHCpDoCWt= jN00F0hvyvZiM7cc3w$ for graphic product...

    ATTN...WFO...OUN...AMA...

    LAT...LON 35320202 35540245 35870245 36260191 36279998 35999973
    35429976 35190025 35320202=20

    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


    =3D =3D =3D
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