• MESO: Mesoscale Discussion 0897

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tue May 30 19:11:22 2023
    ACUS11 KWNS 301911
    SWOMCD
    SPC MCD 301910=20
    COZ000-NMZ000-NEZ000-WYZ000-302115-

    Mesoscale Discussion 0897
    NWS Storm Prediction Center Norman OK
    0210 PM CDT Tue May 30 2023

    Areas affected...Southeast WY...Eastern CO...Northeast NM

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

    Valid 301910Z - 302115Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Isolated strong to severe gusts are possible across the
    central and southern High Plains this afternoon.

    DISCUSSION...Visible satellite imagery has shown cumulus building
    across the higher terrain of central CO, north-central NM, and
    south-central WY from late morning until now. Lightning has recently
    been observed in a few areas, indicating these cumulus have now
    reached enough depth for lightning production. This overall trend of
    gradually deepening cumulus is expected to continue, resulting in
    progressively increasing thunderstorm coverage. Westerly mean flow
    will take these currently developing storms into the lower
    elevations of the southern and central High Plains.=20

    The air mass over these lower elevations is already deeply mixed,
    with this mixing expected to persist through the afternoon. Despite
    this deep mixing, gradually increasing mid-level moisture will help
    support modest buoyancy. As a result, storms will likely persist as
    they move into this environment, with the high cloud bases and deep
    mixing contributing to strong outflows and the potential for some
    severe wind gusts. Overall severe coverage is expected to be
    isolated, with the severe potential increasing farther east later
    this evening as this storms and associated outflow interact with the
    more buoyant air mass over that region. A watch will eventually be
    needed as this activity moves east, but timing is uncertain.

    ..Mosier/Hart.. 05/30/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-2QPF64kXY9Gfp7-mQZWae6Itg7xHL-ZILI5FczdCQqDfCaf7p04XKPSykWJqHFo0cdCfuhYZ= ckW5OoIKcidz9ffzT0$ for graphic product...

    ATTN...WFO...GLD...PUB...BOU...CYS...ABQ...

    LAT...LON 40830519 42020575 42840556 42720445 41170390 38470307
    35630338 35660452 37670485 38270485 38860487 39760519
    40830519=20


    =3D =3D =3D
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