• MESO: Mesoscale Discussion 1293

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Wednesday, June 24, 2026 18:11:45
    ACUS11 KWNS 241811
    SWOMCD
    SPC MCD 241811=20
    OKZ000-COZ000-TXZ000-NMZ000-242045-

    Mesoscale Discussion 1293
    NWS Storm Prediction Center Norman OK
    0111 PM CDT Wed Jun 24 2026

    Areas affected...Eastern New Mexico into southern Colorado and the
    Texas Panhandle

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

    Valid 241811Z - 242045Z

    Probability of Watch Issuance...60 percent

    SUMMARY...Thunderstorms developing within the higher terrain of the
    southern Rockies will pose a severe wind/hail threat as they spread
    east through the late afternoon and early evening. Watch issuance
    will likely be needed later this afternoon.

    DISCUSSION...The effects of strong diurnal heating/boundary-layer
    mixing and orographic ascent are quickly becoming apparent in GOES
    imagery across much of New Mexico. Several regions of building
    cumulus are noted as temperatures warm into the low 90s and
    lingering inhibition quickly erodes. Building cumulus is also noted
    along the Sangre De Cristo and Sandia Manzano mountains where
    upslope flow is providing focused forcing for ascent a few deeper
    towers are noted in low-level water-vapor imagery, suggesting that
    initial attempts at deep convective initiation will likely occur
    within the next hour or so.=20

    Sustained convection developing along the terrain will spread east
    within given westerly flow regime aloft. Lingering inhibition at
    lower elevations may limit how quickly high-based convection can
    utilize near-surface parcels, but once MLCIN erodes and/or cold
    pools can become sufficiently deep, convection will be influenced by
    the regionally rich low-level moisture in place across eastern NM/CO
    (dewpoints in the upper 50s to 60s) that is supporting MLCAPE values
    upwards of 1500 J/kg. Concurrently, convection will begin to realize
    the 30-35 knots of deep-layer wind shear (sampled by the KFDX VWP),
    which should promote supercellular storm modes initially with an
    attendant threat for large hail and severe gusts. Watch issuance
    will likely be needed by late afternoon as convection begins to
    mature and spread east into the more buoyant air mass.

    ..Moore/Guyer.. 06/24/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!76E_LxjSc0SV2kh6jvAVohKQE_fHnl4TbvGuBwktbdEUoPbTB0F3bMpSL1_FoFtGIBHQcjEK8= PLO7s__nb5pZ3LP6UQ$ for graphic product...

    ATTN...WFO...LUB...AMA...PUB...ABQ...

    LAT...LON 34090497 34710527 35650528 36330512 36910489 37360490
    37650488 37860470 37850446 37770398 37530351 37170301
    36750279 35940270 34610257 34020268 33740294 33610342
    33560390 33600428 33690457 33820478 34090497=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


    =3D =3D =3D
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    * Origin: Capitol City Online (1:2320/107)