• MESO: Mesoscale Discussion 0796

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tuesday, May 17, 2022 00:38:13
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    ACUS11 KWNS 170038
    SWOMCD
    SPC MCD 170037=20
    TXZ000-NMZ000-170230-

    Mesoscale Discussion 0796
    NWS Storm Prediction Center Norman OK
    0737 PM CDT Mon May 16 2022

    Areas affected...Southern High Plains

    Concerning...Severe Thunderstorm Watch 232...233...

    Valid 170037Z - 170230Z

    The severe weather threat for Severe Thunderstorm Watch 232, 233
    continues.

    SUMMARY...Thunderstorms will become more concentrated across the
    Texas Panhandle by 03z.

    DISCUSSION...Weak mid-level short-wave trough has migrated into
    eastern NM early this evening. Scattered convection continues to
    develop ahead of this feature across the southern High Plains,
    extending as far south as Gains County TX, just north of MAF. 20kt
    850mb flow currently extends across the western TX Panhandle but is
    expected to gradually increase across the TX South Plains after
    sunset. As a result, convection may continue to grow upscale as it
    encounters increasingly moist environment, aided by LLJ. This
    activity should spread toward the eastern TX Panhandle by 05z.
    Wind/hail remain possible.

    ..Darrow.. 05/17/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6UD1ka2sXsKGYRnFvZ0SmsbsR0Rkj79tRx8QXenaOavQFffaDA-F8UxaH3bFwBmcJCk76IAhY= T3uH3ayBqJiComd9kU$ for graphic product...

    ATTN...WFO...LUB...AMA...ABQ...

    LAT...LON 36090329 35690104 33530076 33190220 34270275 35010397
    36090329=20



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, May 15, 2023 00:56:53
    ACUS11 KWNS 150056
    SWOMCD
    SPC MCD 150056=20
    KYZ000-INZ000-ILZ000-150300-

    Mesoscale Discussion 0796
    NWS Storm Prediction Center Norman OK
    0756 PM CDT Sun May 14 2023

    Areas affected...South-central Illinois

    Concerning...Severe Thunderstorm Watch 224...

    Valid 150056Z - 150300Z

    The severe weather threat for Severe Thunderstorm Watch 224
    continues.

    SUMMARY...The risk of large hail and severe gusts continues across
    the eastern portion of Severe Thunderstorm Watch 224 this evening.

    DISCUSSION...Several supercell clusters are tracking southeastward
    across the eastern portion of Severe Thunderstorm Watch 224 in
    south-central Illinois this evening. These storms are maintaining
    residence time in the zone of moderate surface-based instability
    (1000-1500 J/kg MLCAPE) and 30 kts of 0-6 km shear (per regional
    VWP). Given the somewhat separated nature of these storms through
    this corridor, large hail up to 1.5 inches remains possible, along
    with locally damaging gusts with the more upscale-grown clusters
    (aided by water-loading processes). While some of this activity
    could extend southeastward into parts of western Kentucky, current
    thinking is that the overall severe risk will become increasingly
    isolated during the next couple of hours, and a downstream watch is
    not expected at this time.

    ..Weinman.. 05/15/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_F1clClK3sM4ZFV5X7jmfMwjX4H5nGrrJ0gLcrpz7PGlGbocX1kKjmJKP3mC4aLn1QjSLhcde= 8m1L0S7gKL2-fh76dE$ for graphic product...

    ATTN...WFO...PAH...ILX...LSX...

    LAT...LON 37598843 38378902 38808950 39008987 39268983 39478953
    39508922 39368882 38918826 38568793 38128778 37698784
    37548811 37598843=20


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