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  • MESO: Mesoscale Discussion 1146

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, June 13, 2022 20:56:01
    ACUS11 KWNS 132055
    SWOMCD
    SPC MCD 132055=20
    OHZ000-KYZ000-INZ000-132230-

    Mesoscale Discussion 1146
    NWS Storm Prediction Center Norman OK
    0355 PM CDT Mon Jun 13 2022

    Areas affected...Southeast IN...Southern OH...Northern KY

    Concerning...Severe Thunderstorm Watch 354...

    Valid 132055Z - 132230Z

    The severe weather threat for Severe Thunderstorm Watch 354
    continues.

    SUMMARY...The threat for damaging wind gusts and isolated hail
    continues across southeast IN, southwest OH, and northern KY. A
    downstream watch may be needed later if storm trends merit.

    DISCUSSION...The initially multicellular, clustered storm mode has
    recently shown a trend toward more forward progression. This is
    perhaps the beginning of a transition into a more linear mode. The
    air mass downstream of this organizing cluster is characterized by
    temperatures in the 90s, dewpoints in the upper 70s, extreme
    buoyancy, and little to no convective inhibition. As such, the
    expectation is for the ongoing cluster to continue southeastward,
    with an attendant threat for damaging wind gusts. The cluster should
    remain within the bounds of Severe Thunderstorm Watch 354 for the
    next 2 hours. Thereafter, a downstream watch may be needed into more
    of northern KY, southern OH, and far western WV if trends merit.

    ..Mosier.. 06/13/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9jsGu7kattERZO8nbl_AeBAVTTOajEm1RuurfCiW7hYYXv0OG0oDKci8mumTzw8ukQbMCCO1q= ZgfUPGionAC0fQk1wk$ for graphic product...

    ATTN...WFO...RLX...JKL...ILN...LMK...IND...

    LAT...LON 40048566 39898417 39148263 38178309 38098424 38738547
    39508586 40048566=20


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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sunday, June 18, 2023 10:21:48
    ACUS11 KWNS 181021
    SWOMCD
    SPC MCD 181021=20
    ALZ000-MSZ000-LAZ000-181215-

    Mesoscale Discussion 1146
    NWS Storm Prediction Center Norman OK
    0521 AM CDT Sun Jun 18 2023

    Areas affected...central and southern Mississippi and far northeast
    Louisiana

    Concerning...Severe Thunderstorm Watch 332...

    Valid 181021Z - 181215Z

    The severe weather threat for Severe Thunderstorm Watch 332
    continues.

    SUMMARY...Severe wind and perhaps hail will remain possible over
    mainly southern parts of WW 332. Some severe risk may eventually
    extend south of the watch, and additional counties may be added.

    DISCUSSION...A line of storms associated with a large area of
    outflow currently stretches from near Memphis TN southward into
    central MS, with new strengthening storms over far northeast LA.
    While marginally severe gusts will remain possible over northern
    areas, the greatest severe risk should trend south with time where
    the stronger instability currently resides.=20

    The bow that previously moved across southern AR is now into
    west-central MS, and remains severe. Additional storms are forming
    to the west/southwest along its outflow, with a mean motion to the east/southeast around 40 kt. Given the moist and unstable air mass
    downstream, this severe risk may eventually extend south of the
    watch over much of southern MS, with continued severe wind and
    localized hail risk.

    ..Jewell.. 06/18/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8trHC-oqDhk7r0wAXAwbiLskWVByTojc-jszwwfWu-hXUj0_6X-Q-kr7I2OLBcIbhb-6NF5V_= lRWaM5N--x-0ozhBic$ for graphic product...

    ATTN...WFO...MOB...JAN...LIX...

    LAT...LON 32929071 33238995 33238951 32978894 32578854 31818844
    31058858 30978913 31109017 31519105 31759127 32269140
    32489126 32929071=20


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