• MESO: Mesoscale Discussion 0527

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, May 26, 2018 16:41:19
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    ACUS11 KWNS 261641
    SWOMCD
    SPC MCD 261640
    MIZ000-WIZ000-261915-

    Mesoscale Discussion 0527
    NWS Storm Prediction Center Norman OK
    1140 AM CDT Sat May 26 2018

    Areas affected...Parts of New England

    Concerning...Severe potential...Watch unlikely

    Valid 261640Z - 261915Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Storms are expected to increase in coverage over the next
    several hours, with large hail the main threat.

    DISCUSSION...Isolated storms have already formed across the northern
    U.P. of MI within a weak low pressure trough, and on the southern
    shore of Lake Superior. Strong heating will persist across this
    area, with cool midlevel temperatures with the shortwave trough
    enhanced lapse rates. The current activity is expected to continue southeastward, then propagate southward into northeast WI as
    relatively warm air feeds in from the west. Shear profiles will
    remain weak, but will favor southward-turning cells capable of hail.
    A localized wind threat may also materialize should cells
    conglomerate outflows.

    ..Jewell/Hart.. 05/26/2018

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

    ATTN...WFO...MQT...GRB...

    LAT...LON 44548744 44328811 44518889 45058933 45798935 46458914
    46848877 46988841 46958802 46758755 46598700 46558650
    46348622 45788625 44548744



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, May 26, 2018 16:43:49
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    ACUS11 KWNS 261643
    SWOMCD
    SPC MCD 261643 COR
    MIZ000-WIZ000-261915-

    Mesoscale Discussion 0527
    NWS Storm Prediction Center Norman OK
    1143 AM CDT Sat May 26 2018

    Areas affected...Northeast Wisconsin into the U.P. of Michigan

    Concerning...Severe potential...Watch unlikely

    Valid 261643Z - 261915Z

    CORRECTED FOR HEADER

    Probability of Watch Issuance...20 percent

    SUMMARY...Storms are expected to increase in coverage over the next
    several hours, with large hail the main threat.

    DISCUSSION...Isolated storms have already formed across the northern
    U.P. of MI within a weak low pressure trough, and on the southern
    shore of Lake Superior. Strong heating will persist across this
    area, with cool midlevel temperatures with the shortwave trough
    enhanced lapse rates. The current activity is expected to continue southeastward, then propagate southward into northeast WI as
    relatively warm air feeds in from the west. Shear profiles will
    remain weak, but will favor southward-turning cells capable of hail.
    A localized wind threat may also materialize should cells
    conglomerate outflows.

    ..Jewell/Hart.. 05/26/2018

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

    ATTN...WFO...MQT...GRB...

    LAT...LON 44548744 44328811 44518889 45058933 45798935 46458914
    46848877 46988841 46958802 46758755 46598700 46558650
    46348622 45788625 44548744



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, May 04, 2019 14:42:20
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    ACUS11 KWNS 041442
    SWOMCD
    SPC MCD 041441
    NCZ000-TNZ000-GAZ000-ALZ000-041615-

    Mesoscale Discussion 0527
    NWS Storm Prediction Center Norman OK
    0941 AM CDT Sat May 04 2019

    Areas affected...parts of eastern Tennessee...northern Georgia...and
    western North Carolina

    Concerning...Severe potential...Watch unlikely

    Valid 041441Z - 041615Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Limited severe risk -- mainly in the form of gusty/locally
    damaging winds -- exists over portions of the southern Appalachians,
    though WW is not anticipated in the short term.

    DISCUSSION...Latest radar loop shows a weak remnant convective
    circulation moving northeast across middle Tennessee, with a leading
    band of organized storms near the Tennessee/Georgia border. The
    storms are moving through an environment characterized by rather
    weak lapse rates aloft/modest instability (at or below 500 J/kg
    mixed-layer CAPE), and moderate deep-layer flow (low- to mid-level
    flow 20 to 30 kt from the west-southwest).

    Given limitations of both the kinematic and thermodynamic
    environment, severe risk should remain limited. However, given the
    linearly organized/weakly bowing nature of the convective band, and
    enhanced forward motion (east-northeast at around 30 kt), gusty
    winds, and some sporadic tree/limb damage appears possible.

    While WW is not anticipated in the short term, downstream/diurnal destabilization over the next several hours may support an increase
    in storm intensity, and corresponding potential need for WW
    issuance.

    ..Goss/Guyer.. 05/04/2019

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

    ATTN...WFO...GSP...MRX...FFC...OHX...BMX...

    LAT...LON 34708531 35598563 36138350 36138260 35838251 35118300
    34378374 33828477 33588538 34708531



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