• MESO: Mesoscale Discussion 0782

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, May 16, 2022 16:02:09
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    ACUS11 KWNS 161602
    SWOMCD
    SPC MCD 161601=20 CTZ000-NYZ000-NJZ000-PAZ000-MDZ000-DEZ000-DCZ000-VAZ000-161800-

    Mesoscale Discussion 0782
    NWS Storm Prediction Center Norman OK
    1101 AM CDT Mon May 16 2022

    Areas affected...Far Northeast VA...Eastern MD...DE...NJ...NY Hudson
    Valley

    Concerning...Severe potential...Watch likely=20

    Valid 161601Z - 161800Z

    Probability of Watch Issuance...80 percent

    SUMMARY...Increased thunderstorm coverage is expected over the next
    few hours, with supercells capable of damaging wind gusts and hail
    possible.

    DISCUSSION...Recent radar and satellite imagery has shown an
    increase in the showers from northern VA into NJ, with a few
    stronger embedded updrafts. This area is indicative of the increased
    ascent preceding the shortwave trough and attendant cold front. Air
    mass over most of the region has warmed into the low 70s amid
    dewpoints in the mid 60s. While cloud cover may impede heating
    somewhat, this air mass is still expected to further destabilize
    over the next few hours. As it does, a few stronger updrafts may
    manifest within this warm-air advection regime. Moderate shear is in
    place, so any stronger, more persistent updrafts could organize, and
    the potential for a few supercells capable of isolated hail and
    damaging wind gusts exists. Greatest chance for severe thunderstorms
    during the next few hours appears to be across NJ and into the
    Hudson Valley where temperatures are highest. Convective trends are
    being monitored across the entire region for likely watch issuance.

    ..Mosier/Grams.. 05/16/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!975hQ0lKagzilZpPWtAEKL3EfCAcNBFBTn_DMIKixnY7I3AdST1Rmw55Zm9BE7sdbD3d6xIQC= KXGs6utXmnHrKYSRAw$ for graphic product...

    ATTN...WFO...OKX...ALY...PHI...BGM...AKQ...CTP...LWX...

    LAT...LON 41477459 41657399 41437338 40737375 39647418 38317518
    38127599 38397747 39297749 39777610 41037528 41477459=20



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, May 13, 2023 01:38:02
    ACUS11 KWNS 130137
    SWOMCD
    SPC MCD 130137=20
    TXZ000-OKZ000-130330-

    Mesoscale Discussion 0782
    NWS Storm Prediction Center Norman OK
    0837 PM CDT Fri May 12 2023

    Areas affected...West-central/north-central TX

    Concerning...Severe Thunderstorm Watch 216...217...221...

    Valid 130137Z - 130330Z

    The severe weather threat for Severe Thunderstorm Watch 216, 217,
    221 continues.

    SUMMARY...Slow-moving squall line will propagate southeast this
    evening. Hail/wind remain possible.

    DISCUSSION...Convection that developed along the dryline has
    congealed into a larger MCS that extends from west-central into
    northwestern TX. Expanding area of precipitation trails the leading
    squall line that is beginning to surge a bit from SPS-ABI-north of
    SJT. A reservoir of very strong instability (4000+ J/kg SBCAPE)
    resides immediately downstream per FWD and OUN soundings. While a
    weak cap was evident on 00z FWD sounding, this inhibition should not
    preclude ongoing activity propagating into north-central TX later
    this evening. Hail/wind remain possible.

    ..Darrow.. 05/13/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_uum0-OHUqYuYK12iqxNc8Ajor5a1hNonn1_LbrCibQLLVxDiDg6IIBiQrs3G65xNyGHEStOM= Onx0rpR2t7HL5rDBIA$ for graphic product...

    ATTN...WFO...FWD...OUN...SJT...

    LAT...LON 31670035 32929878 34089804 33679719 32439802 31579929
    31670035=20


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