• MESO: Mesoscale Discussion 0886

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon May 19 22:22:27 2025
    ACUS11 KWNS 192222
    SWOMCD
    SPC MCD 192221=20
    MOZ000-ARZ000-OKZ000-KSZ000-200015-

    Mesoscale Discussion 0886
    NWS Storm Prediction Center Norman OK
    0521 PM CDT Mon May 19 2025

    Areas affected...Western Missouri...Far Northwest Arkansas

    Concerning...Tornado Watch 292...294...

    Valid 192221Z - 200015Z

    The severe weather threat for Tornado Watch 292, 294 continues.

    SUMMARY...The severe threat is expected to increase across the
    western Ozarks early this evening. Tornadoes, large hail and wind
    damage will be possible.

    DISCUSSION...The latest hi-resolution radar from Tulsa shows
    scattered severe storms, with multiple supercells and short intense
    line segments, located from northeastern Oklahoma extending
    northward into far western Missouri. The RAP is analyzing moderate
    instability to the east of the storms over much of the Ozarks, where
    MLCAPE is estimated to be around 2000 J/kg. In addition, the axis
    of a 40 to 50 knot low-level jet is analyzed from eastern Oklahoma
    into western Missouri. The low-level jet will gradually increase and
    move eastward, which will increase low-level shear across the
    western Ozarks. RAP forecast soundings for Springfield, Missouri
    increase 0-3 km storm-relative helicity into the 300 to 350 m2/s2
    range by early evening. In response, a tornado threat is expected to
    develop across the western Ozarks over the next few hours. Wind
    damage will also be possible with bowing line segments. Supercells
    may also produce large hail.

    ..Broyles.. 05/19/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4K8ESEJicb00xZBy6cJlJJvP2AZ5FHNCKIGU7ozeX-80VEGG8f3tF4WeVZ8Ft6fgmeAxCTeTz= _OcyrEO9hxYDauvgWY$ for graphic product...

    ATTN...WFO...LZK...SGF...EAX...TSA...

    LAT...LON 38819430 38459460 37619472 36739469 36089461 35879426
    35869369 36079316 36989295 37589292 38289295 38759319
    38899381 38819430=20

    MOST PROBABLE PEAK TORNADO INTENSITY...140-170 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN


    =3D =3D =3D
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