• MESO: Mesoscale Discussion 0361

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, May 05, 2018 19:27:46
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    ACUS11 KWNS 051927
    SWOMCD
    SPC MCD 051927
    WVZ000-VAZ000-TNZ000-KYZ000-052100-

    Mesoscale Discussion 0361
    NWS Storm Prediction Center Norman OK
    0227 PM CDT Sat May 05 2018

    Areas affected...Eastern TN to Southern WV

    Concerning...Severe potential...Watch unlikely

    Valid 051927Z - 052100Z

    Probability of Watch Issuance...5 percent

    SUMMARY...A few strong storms are expected from portions of eastern
    TN to southern WV. Hail and gusty winds are the primary threats. Low
    severe probabilities will be added to 20z outlook to account for
    these threats.

    DISCUSSION...A narrow corridor of modest boundary-layer heating has
    developed from eastern TN into southeast KY. Surface temperatures
    have warmed into the mid 70s across this region ahead of a very
    moist plume characterized by scattered convection and an extensive
    rain shield. Within this moist plume there appears to be a weak
    embedded MCV over Middle TN that is tracking slowly northeast. This
    feature may be partly responsible for recent increase in convection
    immediately downstream in the Putnam/White County TN region. While
    buoyancy is not particularly strong there appears to be sufficient
    instability, given the observed shear, for robust updrafts through
    the late afternoon hours. Marginally severe hail and gusty winds are
    the primary threats.

    ..Darrow/Grams.. 05/05/2018

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

    ATTN...WFO...RNK...RLX...MRX...JKL...LMK...OHX...

    LAT...LON 36538537 38388193 38058069 37198100 36068272 35528469
    36538537



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, April 15, 2019 04:45:02
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    ACUS11 KWNS 150444
    SWOMCD
    SPC MCD 150444
    PAZ000-150545-

    Mesoscale Discussion 0361
    NWS Storm Prediction Center Norman OK
    1144 PM CDT Sun Apr 14 2019

    Areas affected...Montour Northumberland...and Columbia counties in
    Pennsylvania

    Concerning...Tornado Watch 69...

    Valid 150444Z - 150545Z

    The severe weather threat for Tornado Watch 69 continues.

    SUMMARY...A supercell embedded in the squall line may lead to an
    increased wind damage and tornado threat over the next hour.

    DISCUSSION...A supercell embedded within the squall line is entering Northumberland county at 0440Z. This embedded supercell may locally
    enhance the wind damage threat over the next hour. In addition,
    given the vorticity rich environment, there will be a somewhat
    enhanced tornado threat.

    ..Bentley.. 04/15/2019

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

    ATTN...WFO...CTP...

    LAT...LON 40977708 41097673 41047637 40917627 40797642 40707671
    40667695 40727716 40827721 40977708



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