• MESO: Mesoscale Discussion 1141

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jul 1 20:16:59 2021
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    ACUS11 KWNS 012016
    SPC MCD 012016=20

    Mesoscale Discussion 1141
    NWS Storm Prediction Center Norman OK
    0316 PM CDT Thu Jul 01 2021

    Areas affected...Portions of the Delmarva Peninsula...far
    southeastern PA...and southern NJ

    Concerning...Severe Thunderstorm Watch 331...

    Valid 012016Z - 012145Z

    The severe weather threat for Severe Thunderstorm Watch 331

    SUMMARY...The threat for mainly damaging wind gusts will continue to
    shift eastward across the Delmarva Peninsula, far southeastern
    Pennsylvania, and southern New Jersey this afternoon.

    DISCUSSION...Multiple clusters of storms with a history of producing
    measured severe wind gusts to 58 mph in DC, 66 mph in Annapolis MD,
    and damaging wind gusts across central MD have moved eastward across
    the Chesapeake Bay. The environment across the Delmarva Peninsula
    and southern NJ ahead of this convection remains favorable in the
    short term for strong to severe wind gusts capable of producing
    mainly scattered tree damage, as low-level lapse rates are modestly
    steepened. Latest radar imagery from KDOX shows swaths of strong
    inbound velocities across the Eastern Shore of MD associated with
    two separate clusters. Recent VWPs from KDOX and KDIX indicate 30-45
    kt of west-southwesterly flow at mid levels, and organized multicell
    clusters should remain the dominant storm mode as they continue
    eastward towards the Atlantic Coast over the next couple of hours.

    ..Gleason.. 07/01/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!ricbFnp_T4EOTmqVqdEXECKCwzGsXvnwYiq_QxcO30d4l5pRy8V8ef2lo-3G4l9FnHZpc0BA$=
    for graphic product...


    LAT...LON 38007520 38017583 38347621 38957626 39307614 40307522
    40387456 40327392 39687408 39187453 38767494 38367498

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