• MESO: Mesoscale Discussion 1916

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Oct 27 17:53:24 2021
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    ACUS11 KWNS 271753
    SPC MCD 271752=20

    Mesoscale Discussion 1916
    NWS Storm Prediction Center Norman OK
    1252 PM CDT Wed Oct 27 2021

    Areas affected...portions of northern LA

    Concerning...Tornado Watch 541...

    Valid 271752Z - 271915Z

    The severe weather threat for Tornado Watch 541 continues.

    SUMMARY...A couple of locally strong wind gusts are possible the
    next hour or two across Tornado Watch 541, but the overall severe
    threat will diminish with eastward extent across northeast

    DISCUSSION...Instability continues to wane downstream from Tornado
    Watch 541 as the warm sector becomes increasingly narrow. A warm
    front draped across south/southeastern LA will slowly lift northward
    during the afternoon, but not quickly enough as the ongoing line of
    convection advances eastward faster than the front advances
    northward. As a result, the boundary layer is expected to remain
    rather cool and only weakly unstable. Weak to moderate vertical
    shear will remain over the region and a couple of strong storms may
    persist within the line in the short-term, possibly producing
    locally gusty winds. However, the overall severe threat is expected
    to be limited across northeast LA and a downstream watch is not

    ..Leitman.. 10/27/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!tAXukqx7T_FJ7gD5BIoi3eyKs9TC8uMNhu3H-buHpttXPxyM4id8Q0iRpwqbT55UGERWQJ8a$=
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    LAT...LON 32799476 33219471 33439461 33619417 33709348 33559275
    33309230 33069210 32699193 32369191 32129198 31919222
    31859252 31859299 31719393 31749438 32019455 32489472

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