• MESO: Mesoscale Discussion 1647

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Jul 11 20:54:52 2025
    ACUS11 KWNS 112054
    SWOMCD
    SPC MCD 112054=20
    OKZ000-TXZ000-KSZ000-COZ000-NMZ000-112230-

    Mesoscale Discussion 1647
    NWS Storm Prediction Center Norman OK
    0354 PM CDT Fri Jul 11 2025

    Areas affected...southeast Colorado into eastern New Mexico and the
    western Oklahoma/Texas Panhandles.

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

    Valid 112054Z - 112230Z

    Probability of Watch Issuance...60 percent

    SUMMARY...Scattered storms developing off the Raton Mesa and along
    the stalled front will likely pose a risk for damaging gusts and
    isolated hail into this evening.

    DISCUSSION...As of 2050 UTC, regional radar and satellite imagery
    showed initial thunderstorms intensifying across the higher terrain
    of southern CO and eastern NM. Driven largely by weak upslope flow
    and diurnal heating, gradual storm intensification is expected over
    the next couple of hours. Warm surface temperatures and adequate
    moisture are supporting moderate buoyancy amid mid-level lapse rates
    of 7-8 C/km. This should support stronger updrafts as convection
    develops off the higher terrain through the remainder of the
    afternoon. Vertical shear is not overly strong (30-40 kt), but
    sufficient for a few organized storms including supercells or
    persistent multi-cell clusters. With time, scattered to widespread thunderstorms will develop and spread eastward into the TX/K
    Panhandles. Given the degree of buoyancy and potential for
    supercells, an initial risk for hail is expected. A deeply mixed
    boundary layer and consolidating outflow should also favor a
    damaging wind risk, especially with some upscale growth later this
    evening.

    Lingering inhibition and the limited forcing for ascent suggests the
    overall convective evolution may be somewhat slow. CAM guidance
    agrees, showing storm organization occurring as storm coverage
    increases this evening. However, the environment is expected to
    support an increasing severe risk into this evening. Some
    uncertainty exists regarding the timing, but a severe thunderstorm
    watch appears probable this afternoon/evening.

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

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!51kpbvot4NXst_Q34babFsMATUDKNrh2Dj8kZS9B1AGabDkFUgoLMvkqosCsidgKOuT_Om8-0= GBJLv0nu69zRdKSEb0$ for graphic product...

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

    LAT...LON 37240521 37590458 37750344 36910139 35790127 34630175
    34140324 33880396 34250504 37240521=20

    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

    --- SBBSecho 3.20-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)