• MESO: Mesoscale Discussion 1252

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jun 11 19:58:24 2025
    ACUS11 KWNS 111957
    SWOMCD
    SPC MCD 111957=20
    WYZ000-MTZ000-UTZ000-IDZ000-ORZ000-112100-

    Mesoscale Discussion 1252
    NWS Storm Prediction Center Norman OK
    0257 PM CDT Wed Jun 11 2025

    Areas affected...central Idaho...western Wyoming...southwestern
    Montana

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

    Valid 111957Z - 112100Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Scattered thunderstorm activity will pose a marginal risk
    for severe wind and hail through the afternoon.

    DISCUSSION...Scattered thunderstorm activity is ongoing across much
    of central ID into southwestern MT and western WY this afternoon. A
    few stronger cores have emerged over the last hour. Moisture remains
    somewhat modest but deep layer shear around 35-40 kts and steep
    lapse rates may support risk for a few instances of severe wind and
    hail through the afternoon/evening. This should largely be tied to
    the diurnal cycle, with weakening after sunset. Should more
    organized clusters along outflow occur, this may continue into
    central/eastern MT through the evening. Overall, the spatial extent
    of this threat should remain too localized to necessitate watch
    issuance.

    ..Thornton/Guyer.. 06/11/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7Yo4glPEjyuUTQ1X89sgOGcxqgxX23Odubj1PMIWSYeZX5Za7JyEzrL1jPlibE_9I_JBep-nu= 48Leega4taKLAyYPYw$ for graphic product...

    ATTN...WFO...CYS...BYZ...RIW...GJT...TFX...SLC...PIH...MSO...
    BOI...PDT...

    LAT...LON 45191719 45911624 46451475 47091181 46961005 46110915
    45690895 43990754 43150693 41970700 41350788 40970957
    41961262 41801337 42631478 43351580 45191719=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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