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  • MESO: Mesoscale Discussion 0089

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Feb 12 20:29:45 2025
    ACUS11 KWNS 122029
    SWOMCD
    SPC MCD 122029=20
    OHZ000-INZ000-130030-

    Mesoscale Discussion 0089
    NWS Storm Prediction Center Norman OK
    0229 PM CST Wed Feb 12 2025

    Areas affected...Eastern Indiana into northwest Ohio

    Concerning...Winter mixed precipitation=20

    Valid 122029Z - 130030Z

    SUMMARY...A mix of sleet and freezing rain is expected to overspread
    eastern Indiana and northwest Ohio over the next several hours.
    Freezing rain rates up to 0.03-0.05 inch/hour are possible.

    DISCUSSION...Precipitation associated with the warm advection branch
    of a deepening mid-level wave is beginning to overspread parts of
    central to eastern IN and southwest OH where surface temperatures
    remain near or below freezing. Recent upper-air analysis and
    forecast soundings show a weak warm layer aloft at around 850 mb
    atop of sub-freezing surface temperatures that should support some melting/re-freezing of hydrometeors. The weak warm nose will likely
    initially support a mix of sleet and freezing rain within a narrow
    swath from eastern IN into west/northwest OH where there is
    favorable overlap of sub-freezing surface temperatures and warm
    temperatures aloft. With time, continued warming near the 850 mb
    level should promote a gradual transition to primarily freezing rain
    through late afternoon/early evening. Freezing rain rates between
    0.02 to 0.05 in/hour appear probable based on recent high-res
    guidance that has captured surface temperature trends well.

    ..Moore.. 02/12/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_PrY-clrqMAMN_1ltzmsfePI00XdSc_ctVxjqUbuG18kme2hUUYVnVA4KkkT7Hs3rnitxXz1o= Krug6rJhlMIh3uJzL4$ for graphic product...

    ATTN...WFO...CLE...ILN...IWX...IND...

    LAT...LON 40958148 40708156 40588177 40518214 40398297 40268354
    40108408 39918451 39808490 39798545 39888585 40048604
    40408605 40808569 41268487 41428415 41508361 41478294
    41428237 41318194 41118162 40958148=20


    =3D =3D =3D
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