• MESO: Mesoscale Discussion 0184

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Mar 2 21:17:34 2024
    ACUS11 KWNS 022117
    SWOMCD
    SPC MCD 022116=20
    CAZ000-030215-

    Mesoscale Discussion 0184
    NWS Storm Prediction Center Norman OK
    0316 PM CST Sat Mar 02 2024

    Areas affected...portions of the higher terrain of the central
    Sierra Nevada

    Concerning...Heavy snow=20

    Valid 022116Z - 030215Z

    SUMMARY...A gradual increase in heavy snowfall rates is anticipated
    heading into the late afternoon/evening hours within the higher
    terrain of the central Sierra Nevada range in California. Snowfall
    rates of 2-3 inches/hour appear possible.

    DISCUSSION...Surface observations and regional radar composites have
    recently shown a temporary lull in precipitation/snowfall rates
    along the higher terrain of the Sierra Nevada over the past hour.
    However, recent RAP upper air analyses and GOES water-vapor imagery
    indicate that the nose of a 100+ knot mid-level jet is beginning to
    push into central CA. Broadscale ascent within the left-exit region
    of this wave, combined with an increase in orographic ascent along
    the Sierra Nevada owing to strengthening mid-level winds, should
    promote a gradual uptick in precipitation across central CA late
    this afternoon into the evening hours. Recent high-res guidance
    indicates multiple rounds of heavier precipitation bands moving into
    the region during the 23-03 UTC time frame as ascent increases. Both deterministic and probabilistic guidance suggest that the potential
    for snowfall rates between 2-3 inches/hour will increase during this
    period for higher elevations (generally above 5 kft) where
    temperatures are below freezing.

    ..Moore.. 03/02/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8wGIWSt_8c4LvnC1tYuk5dtKPnaIuvY-8mHU9kBsU25H6hRQFnftaEY6UK3oeTMIwcciNK0FQ= YXsEYO6T3z13aCJId0$ for graphic product...

    ATTN...WFO...VEF...REV...HNX...STO...

    LAT...LON 36741877 37071933 38652051 38872057 39072040 39112017
    38952003 38631982 38221940 37911914 37651895 37481864
    37341848 37171837 36971833 36771829 36681841 36661854
    36741877=20


    =3D =3D =3D
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