• MESO: Mesoscale Discussion 0075

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, February 06, 2019 22:03:38
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    ACUS11 KWNS 062103
    SWOMCD
    SPC MCD 062102
    TNZ000-MSZ000-ARZ000-062300-

    Mesoscale Discussion 0075
    NWS Storm Prediction Center Norman OK
    0302 PM CST Wed Feb 06 2019

    Areas affected...southwestern and into middle Tennessee...and
    vicinity

    Concerning...Severe potential...Watch unlikely

    Valid 062102Z - 062300Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Limited/isolated severe risk is indicated over the next
    couple of hours, from the Memphis vicinity eastward across parts of
    Middle Tennessee.

    DISCUSSION...Latest analysis shows a surface outflow boundary which
    has settled southward in a west-to-east manner, and is now residing
    just south of the Nashville metro area. Repeated bands of showers
    and embedded thunderstorms have moved across this region this
    morning and afternoon, within an environment of minimal CAPE (as
    sampled by the BNA 18Z RAOB) but strong deep-layer speed shear.

    Within the past hour, a stronger convective cell briefly acquired
    low-level rotation -- as it interacted with the aforementioned
    outflow boundary, but quickly weakened thereafter. Similar behavior
    with one or two other cells may occur over the next couple of hours,
    where the main severe risk would be a brief tornado, or a locally
    strong/severe wind gust. Overall severe risk should remain low
    however, within the broad low-level warm advection regime beneath
    weakly anticyclonic mid-level flow. As such, WW is not anticipated
    at this time.

    ..Goss/Guyer.. 02/06/2019

    ...Please see www.spc.noaa.gov for graphic product...

    ATTN...WFO...MRX...OHX...HUN...MEG...

    LAT...LON 36168539 35738498 35308638 35128872 34709010 35099042
    35648982 35968871 36128771 36068632 36168539



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