• MESO: Mesoscale Discussion 0083

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Feb 12 07:25:39 2025
    ACUS11 KWNS 120725
    SWOMCD
    SPC MCD 120725=20
    MOZ000-ARZ000-OKZ000-KSZ000-TXZ000-121330-

    Mesoscale Discussion 0083
    NWS Storm Prediction Center Norman OK
    0125 AM CST Wed Feb 12 2025

    Areas affected...Oklahoma...Far Northwest Arkansas...Far Southwest Missouri...Far Southeast Kansas

    Concerning...Freezing rain=20

    Valid 120725Z - 121330Z

    SUMMARY...Freezing rain is expected to develop across parts of
    Oklahoma overnight, with precipitation rates locally exceeding 0.10
    inches per hour.

    DISCUSSION...A mid-level shortwave trough is evident on water vapor
    imagery near the Four Corners. This feature will move quickly
    eastward across the southern Rockies and into the southern Plains
    late tonight into the early morning hours. Large-scale ascent ahead
    of the shortwave will increase across the southern Plains, which
    will aid the expansion and intensification of precipitation that is
    already ongoing. At the surface, cold air advection is occurring
    over much of the southern Plains. Surface temperatures are currently
    below freezing in most of western and northern Oklahoma into parts
    of central Oklahoma. Temperatures will continue to slowly drop over
    the next few hours, as an area with heavier precipitation moves east-northeastward across Oklahoma.=20

    RAP forecast soundings along this corridor late tonight have a warm
    layer of +2 to +4 C between 700 and 800 mb. With sub-freezing
    surface temperatures, this will result in freezing rain over much of
    Oklahoma. Freezing rain rates are expected to locally exceed 0.10
    inches per hour within the heavier convective showers. Short-term
    model forecast suggest that the precipitation will eventually move
    into parts of the western Ozarks near or after daybreak, where
    precipitation may change over to moderate snow, with the development
    of heavy snow possible.

    ..Broyles/Mosier.. 02/12/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5USHpKTk5WFjU48j443-O4HLqXqzsHa_Jzml4wAfBEa2RC8yEM9H1NMlaaqx_prjgGrCV4Ako= xtl20qcekCEo0Guof0$ for graphic product...

    ATTN...WFO...LZK...SGF...TSA...ICT...OUN...AMA...

    LAT...LON 35039600 34529795 34419886 34419939 34489971 34729995
    35120007 35619997 36049962 36449896 36899706 37319469
    37319385 37149347 36759323 36279333 35949376 35659437
    35039600=20


    =3D =3D =3D
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