• MESO: Mesoscale Discussion 0009

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jan 8 16:44:33 2026
    ACUS11 KWNS 081644
    SWOMCD
    SPC MCD 081644=20
    ARZ000-MOZ000-OKZ000-KSZ000-081845-

    Mesoscale Discussion 0009
    NWS Storm Prediction Center Norman OK
    1044 AM CST Thu Jan 08 2026

    Areas affected...Far northeast Oklahoma...southwest
    Missouri...northern Arkansas

    Concerning...Tornado Watch 1...

    Valid 081644Z - 081845Z

    The severe weather threat for Tornado Watch 1 continues.

    SUMMARY...A squall line is expected to push east/northeast into
    southwest Missouri and northern Arkansas through early/mid
    afternoon. Severe wind gusts, and perhaps a brief tornado, will be
    possible. Watch issuance downstream of ongoing WW 1 is uncertain,
    but will be considered if trends begin to suggest an increasing
    severe threat.

    DISCUSSION...Cloud-top temperatures and lightning data have shown a
    steady weakening of a squall line across northeast OK over the past
    hour as the band of storms begins to struggle against diminishing
    MLCAPE. However, severe wind gusts, including an 81 mph gust near
    Independence, KS, continue to be noted with this line. These winds
    are primarily being driven by very strong low-level flow/wind shear
    as depicted by KINX, KSRX, and KSGF VWP observations that show 50
    knots winds near 1 km ARL. These strong kinematics are expected to
    persist - if not intensify - through late morning/early afternoon as
    the primary upper wave continues to eject towards the mid-MS Valley
    and an attendant surface cyclone intensifies.=20

    Consequently, even with very meager buoyancy downstream into AR and
    southern MO (MLCAPE of around 100-250 J/kg), severe/damaging winds
    appear probable, and a brief tornado or two may be possible with any
    deeper convective elements given 300-400 m2/s2 0-1 km SRH. That
    said, it remains unclear how widespread these threats will be
    considering the recent weakening trend, and may be conditioned on
    the quality of moisture return into and north of the Ozark Plateau
    through mid-afternoon. Trends will continue to be monitored for the
    need for downstream watch issuance.

    ..Moore.. 01/08/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_qc2hK3Hz2Gp5s2EDL_g29SPdoFdzNWIbr5Cf2JCUNGaXITKGQPvJc25g_Ea8ibGPkuEJzZdr= Alwgn90ythFAftglYs$ for graphic product...

    ATTN...WFO...LZK...SGF...TSA...ICT...

    LAT...LON 35699149 34869516 34859546 34899555 35049562 35189554
    35459536 35709519 35889514 36109508 36279505 36479504
    36609505 36779511 36909516 37049515 37189504 38199247
    38039209 37799181 37479167 37229156 36959147 36649137
    36209129 35889131 35699149=20

    MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH


    =3D =3D =3D
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