• MESO: Mesoscale Discussion 0038

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Jan 24 05:26:56 2026
    ACUS11 KWNS 240526
    SWOMCD
    SPC MCD 240526=20
    MSZ000-ARZ000-LAZ000-TXZ000-OKZ000-241030-

    Mesoscale Discussion 0038
    NWS Storm Prediction Center Norman OK
    1126 PM CST Fri Jan 23 2026

    Areas affected...The Texarkana Region into southern Arkansas and far
    western Mississippi

    Concerning...Freezing rain=20

    Valid 240526Z - 241030Z

    SUMMARY...Freezing rain rates are expected to increase across the
    Texarkana region into southern Arkansas and far western Mississippi
    through the overnight hours. Freezing rain rates between 0.05 to 0.1
    inch/hour are possible.

    DISCUSSION...Surface temperatures across southern AR into the
    Texarkana region are now mostly below freezing despite a slight
    abatement of near-surface cold air advection. Several ASOS/AWOS
    stations, mPING reports, and web cams have been reporting
    predominantly freezing rain with pockets of embedded sleet over the
    past couple of hours. Looking upstream, a heavier precipitation band
    is noted migrating eastward across north TX/southern OK attendant to
    a focused zone of isentropic and frontogenetical ascent at around
    850 mb. This uptick in low-level warm advection is noted in regional
    VWPs as a steady enlargement of the 0-3 km hodograph, which supports
    recent analyses and forecasts.=20

    Further strengthening of warm advection/frontogenetical ascent at
    around the 850 mb level is expected per recent guidance as the
    precipitation band spreads east into southern AR over the next 4-6
    hours. Strong ascent combined with persistent warm temperatures at
    around 700 mb will maintain a broad swath of freezing rain across
    the Texarkana region into southern AR, and will likely promote the
    onset of freezing rain to far western MS. Freezing rain rates on the
    order of 0.05 inch/hour appear likely, but localized rates up to 0.1
    inch/hour appear possible across southwest/south-central AR where
    CAM consensus for the past few hours has depicted the highest QPF
    amounts (which appear reasonable based on observed banding
    upstream).

    ..Moore.. 01/24/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7HeiqMhg4hdOCQfYyOUixTQVvyMpQ8z7voSpiQ4aFt5VHuRfZ_PKQoAmiL_zvt8nV1BWkXWHZ= 5PDj8rsCeztRBQQ9UM$ for graphic product...

    ATTN...WFO...MEG...JAN...LZK...SHV...TSA...FWD...

    LAT...LON 32889136 32999414 33229473 33589517 33919537 34229537
    34489517 34579469 34619391 34609290 34609163 34559112
    34399070 34179042 33959036 33219058 32999086 32889136=20


    =3D =3D =3D
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