• MESO: Mesoscale Discussion 0320

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, May 02, 2018 22:29:34
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    ACUS11 KWNS 022229
    SWOMCD
    SPC MCD 022229
    MIZ000-INZ000-ILZ000-030000-

    Mesoscale Discussion 0320
    NWS Storm Prediction Center Norman OK
    0529 PM CDT Wed May 02 2018

    Areas affected...portions of southwest MI into northern IN

    Concerning...Severe potential...Watch unlikely

    Valid 022229Z - 030000Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Isolated strong wind gusts will be possible for a couple
    more hours this evening as storms track east into southwest MI and
    portions of northern IN. Threat should remain limited in space and
    time and a new watch is not expected at this time.

    DISCUSSION...A line of strong to severe storms continues to increase
    as they head east over Lake Michigan and into northwest IN and
    southwest MI. Weak instability resides over the region on the edges
    of stronger midlevel lapse rates. Deep-layer shear is strong enough
    to support continued discrete cells, though a relatively dry
    boundary layer will lead to higher-based cells capable of downburst
    winds. In fact, a few severe downburst wind gusts have been noted in
    the Chicago metro area over the last hour or so. Deep-layer shear
    and lapse rates become weaker with eastward extent and any severe
    threat should remain limited in areal coverage. Furthermore, with
    loss of daytime heating, storms should gradually weaken with time
    this evening.

    ..Leitman/Bentley/Edwards.. 05/02/2018

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

    ATTN...WFO...IWX...GRR...IND...LOT...

    LAT...LON 42908632 42878588 42748513 42278506 41168522 40808548
    40568751 41808772 42548774 42888650 42908632



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, April 13, 2019 16:12:21
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    ACUS11 KWNS 131612
    SWOMCD
    SPC MCD 131611
    LAZ000-TXZ000-131645-

    Mesoscale Discussion 0320
    NWS Storm Prediction Center Norman OK
    1111 AM CDT Sat Apr 13 2019

    Areas affected...Parts of southeast Texas

    Concerning...Severe potential...Tornado Watch likely

    Valid 131611Z - 131645Z

    Probability of Watch Issuance...95 percent

    SUMMARY...A new tornado watch will be issued shortly.

    DISCUSSION...An upscale growing/organizing convective system
    continues to evolve across the Interstate-35 corridor of central
    Texas, with additional discrete supercell development occurring
    downstream, near the surface front. The front may remain a focus
    for possible tornado development into early afternoon, with
    potential for new storm development gradually increasing within the
    warm sector, near/north of Houston.

    ..Kerr/Grams.. 04/13/2019

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

    ATTN...WFO...LCH...HGX...FWD...

    LAT...LON 30999647 31279537 30859391 30499355 29909405 29819548
    30269662 30999647



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