• MESO: Mesoscale Discussion 1050

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Jun 21 19:47:45 2021
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    ACUS11 KWNS 211947
    SWOMCD
    SPC MCD 211947=20
    NYZ000-PAZ000-212045-

    Mesoscale Discussion 1050
    NWS Storm Prediction Center Norman OK
    0247 PM CDT Mon Jun 21 2021

    Areas affected...southwest into north-central PA...western NY

    Concerning...Severe Thunderstorm Watch 299...

    Valid 211947Z - 212045Z

    The severe weather threat for Severe Thunderstorm Watch 299
    continues.

    SUMMARY...Widely scattered strong to locally severe gusts (50-70
    mph) are possible with the more intense thunderstorms as several
    linear segments/clusters move east towards the NY Finger Lakes
    southward into west-central PA over the next 1-2 hours.

    DISCUSSION...Radar mosaic shows several linear segments and
    thunderstorm clusters moving east from the south shore of Lake
    Ontario south-southwestward to the Pittsburgh, PA metro. A moist
    and moderately unstable airmass ahead of the approaching
    thunderstorm activity will continue to support widely scattered
    strong gusts with isolated occurrences of gusts 60-70 mph. The
    Pittsburgh, PA 88D VAD shows 40-kt westerly flow at 3 km ARL. The
    Ithaca, NY ASOS recently measured a 46-kt gust at 1932 UTC (with an
    isolated storm to the east) and a NY Mesonet site in Wyoming County,
    NY measured a 49 mph gust with the squall line. Some of the
    stronger downdrafts will be capable of channeling this higher
    momentum to the surface in the form of strong to locally severe
    gusts through the remainder of the afternoon, as the activity moves
    east across western NY and western PA.

    ..Smith.. 06/21/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!ppQlRrABQhVY1vG71r5SDX52sS7ieKG9uoR_VqikbLU8qBuNSO2NEerN3EWfpDFUXh0NHd8T$=
    for graphic product...

    ATTN...WFO...BGM...BUF...CTP...PBZ...

    LAT...LON 43347751 42107838 40158047 39847917 43367646 43347751=20



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