• MESO: Mesoscale Discussion 0118

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Feb 25 19:08:03 2026
    ACUS11 KWNS 251907
    SWOMCD
    SPC MCD 251907=20
    NEZ000-COZ000-WYZ000-252130-

    Mesoscale Discussion 0118
    NWS Storm Prediction Center Norman OK
    0107 PM CST Wed Feb 25 2026

    Areas affected...parts of southwestern Nebraska and adjacent
    northeastern Colorado/southeastern Wyoming

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

    Valid 251907Z - 252130Z

    Probability of Watch Issuance...5 percent

    SUMMARY...A few strong surface gusts in excess of 50 kt may
    accompany otherwise weak thunderstorm activity overspreading the
    region through 1-4 PM MST.

    DISCUSSION...Near the southern periphery of a low-amplitude digging
    short wave perturbation, lower/mid-tropospheric lapse rates are in
    the process of becoming quite steep near the Cheyenne Ridge
    vicinity. This is occurring in response to continuing insolation
    and deep boundary-layer mixing, beneath strong west-northwesterly
    flow which may include speeds increasing to 50+ kt as low as 700 mb
    during the next couple of hours.

    Despite boundary-layer moisture characterized by surface dew points
    around 30F, forecast soundings suggest the development of up to a
    few hundred J/kg of CAPE, which may maintain and perhaps support at
    least some further intensification of ongoing upstream convective
    development. Some lightning is possible, but, more notably, this
    low-topped convection probably will enhance the downward transfer of
    the stronger momentum to the surface, before activity develops into
    a more stable environment deeper into the the Great Plains.

    ..Kerr/Smith.. 02/25/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8K5V-VvdTqG4eHrvb7OzRGbx1hYQsh-R1XeP3Dyphi2D3u4xvOPn7xvnBCa2cJ2RfZXMcblo4= 9dIGW_sQePlZkc3qsM$ for graphic product...

    ATTN...WFO...GID...LBF...GLD...BOU...CYS...

    LAT...LON 41680410 41740279 41540154 40729960 40240029 40590235
    41210409 41680410=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH


    =3D =3D =3D
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