• MESO: Mesoscale Discussion 1865

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Aug 1 21:51:22 2025
    ACUS11 KWNS 012150
    SWOMCD
    SPC MCD 012150=20
    OKZ000-COZ000-NMZ000-012345-

    Mesoscale Discussion 1865
    NWS Storm Prediction Center Norman OK
    0450 PM CDT Fri Aug 01 2025

    Areas affected...Parts of east-central/southeast Colorado into
    northeast New Mexico

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

    Valid 012150Z - 012345Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Strong to severe storms will spread eastward into this
    evening, posing a risk of isolated large hail and locally severe
    wind gusts. A watch is not currently expected, though trends are
    being monitored.

    DISCUSSION...Widely scattered thunderstorms are evolving along the
    I-25 corridor in east-central/southeast CO into northeast NM, which
    are likely being aided by a passing upper-level jet streak evident
    in water-vapor imagery and VWP data. While instability is marginal
    along the higher terrain, steep deep-layer lapse rates and an
    elongated upper-level hodograph will support isolated large hail
    with the ongoing high-based storms as they advance eastward across
    the I-25 corridor. With time, storms will move eastward into an
    increasingly warm/moist air mass over the CO Plains. Here, higher
    surface-based buoyancy and an elongated/straight mid/upper-level
    hodograph (around 25-30 kt of effective shear) should favor a couple
    loosely organized eastward-moving clusters, capable of producing
    severe wind gusts and isolated hail. Given the modest deep-layer
    shear, storms may tend to be outflow dominant, and a watch is not
    currently expected at this time.

    ..Weinman/Gleason.. 08/01/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8gdcDlQImaZ0fyzIFDY3_TdUQ9ZLn1S54zGWIQ3x-vuP0MCu5rxRI7ZjBbwx6KsjKbEBJMXr4= Lan8-mA3RuT0PmFTdc$ for graphic product...

    ATTN...WFO...GLD...AMA...PUB...BOU...ABQ...

    LAT...LON 36580581 37090566 37600510 38460497 39100476 39530460
    39690434 39650361 39470289 38800263 37020293 35500360
    35350407 35310511 35560553 36580581=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


    =3D =3D =3D
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