• MESO: Mesoscale Discussion 1101

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Jun 26 00:05:47 2021
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    ACUS11 KWNS 260005
    SWOMCD
    SPC MCD 260005=20
    INZ000-ILZ000-260100-

    Mesoscale Discussion 1101
    NWS Storm Prediction Center Norman OK
    0705 PM CDT Fri Jun 25 2021

    Areas affected...northwest Indiana

    Concerning...Severe Thunderstorm Watch 319...

    Valid 260005Z - 260100Z

    The severe weather threat for Severe Thunderstorm Watch 319
    continues.

    SUMMARY...Thunderstorms will continue to develop northeastward out
    of central Illinois into northwest Indiana this evening. Marginally
    severe hail, gusty winds, and a brief tornado will be possible.

    DISCUSSION...Thunderstorms are expected to continue developing
    northeastward this evening. Surface dewpoints in the low 70s and
    temperatures in the low 80s will maintain most-unstable CAPE values
    up to 1000 J/kg. This should be maintained into the evening as the
    low-level jet develops this evening and maintains low-level theta-e.
    This should support at least a marginally severe hail threat and
    potential for strong thunderstorm outflow. Additionally, a myriad of
    outflow boundaries from earlier convection remain across the area.
    Any thunderstorm updraft that latches onto one of these boundaries
    may result in a brief tornado.

    ..Marsh.. 06/26/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!rW73D2y4EBxnXlmoKHzQTgSw8FLfDNl-OlSWTuP_rjTyT4EQEdCc3ZN3XmAh8sN9Hhzu--Xe$=
    for graphic product...

    ATTN...WFO...IWX...IND...LOT...ILX...

    LAT...LON 39598701 39598703 39608753 40998825 41108825 41208824
    41718752 41718752 41758682 41758613 41758604 41758566
    41588566 41488565 40918564 40858564 40658564 40418586
    39598701 39598701=20



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