• MESO: Mesoscale Discussion 1872

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Aug 2 19:36:54 2025
    ACUS11 KWNS 021936
    SWOMCD
    SPC MCD 021936=20
    OKZ000-NEZ000-KSZ000-TXZ000-COZ000-NMZ000-WYZ000-022130-

    Mesoscale Discussion 1872
    NWS Storm Prediction Center Norman OK
    0236 PM CDT Sat Aug 02 2025

    Areas affected...southwest NE...eastern CO...northeast NM...and
    western portions of the OK/TX Panhandles

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

    Valid 021936Z - 022130Z

    Probability of Watch Issuance...80 percent

    SUMMARY...Severe thunderstorm potential will increase over the next
    couple of hours. Developing storms will pose a risk for large hail
    and severe wind gusts by late afternoon. A severe thunderstorm watch
    may be needed for portions of the central High Plains vicinity by
    21z.

    DISCUSSION...Convection is increasing over higher terrain and within
    low-level upslope/confluent flow from northern NM into CO and WY.
    Mid/upper flow has increased, with 30-40 kt 0-6 km shear noted in
    latest mesoanalysis and regional 88-D VWP data. Backing
    south/southeasterly low-level winds are maintaining low to mid 60s F
    dewpoints across western KS into far eastern CO, with lower
    dewpoints into the 50s F elsewhere. Steep midlevel lapse rates were
    noted in morning RAOBs and latest forecast soundings, supporting
    ongoing moderate destabilization as surface temperatures continue to
    warm under mostly sunny skies.=20

    Initial convection moving off higher terrain will likely remain
    cellular amid elongated/straight hodographs. Thermodynamic and
    kinematic profiles will support large hail potential, possibly with
    a few hail stones up to 3.0 inch diameter. Strong heating and
    boundary layer mixing, with weaker low-level flow evident in VWP
    data and forecast soundings, also will support strong/severe gusts.
    As convection shifts east with time toward the CO/KS border
    vicinity, clustering/linear development is expected later this
    evening amid a strengthening low-level jet within the axis of deeper
    boundary layer moisture. Damaging wind potential will increase as
    this occurs.

    ..Leitman/Smith.. 08/02/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9nMI2P2JaLhEk6D-_y04IsrNPQPNmNPlehJ5q9KfjblcIwelqvgfUzVq85fGraFIjrr8RWmhE= bVm4Ah5d7_wePpmu_o$ for graphic product...

    ATTN...WFO...LBF...DDC...GLD...AMA...PUB...BOU...CYS...ABQ...

    LAT...LON 36800435 38820446 40510442 41300429 41520387 41610334
    41480291 41050235 40320201 39520191 36780195 35990209
    35480297 35670369 36140413 36800435=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 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 3.28-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)