• MESO: Mesoscale Discussion 1473

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Jul 9 15:23:56 2023
    ACUS11 KWNS 091523
    SWOMCD
    SPC MCD 091523=20
    NCZ000-VAZ000-SCZ000-091700-

    Mesoscale Discussion 1473
    NWS Storm Prediction Center Norman OK
    1023 AM CDT Sun Jul 09 2023

    Areas affected...Central North Carolina and south-central Virginia

    Concerning...Severe potential...Watch possible=20

    Valid 091523Z - 091700Z

    Probability of Watch Issuance...60 percent

    SUMMARY...A damaging wind threat will increase across central North
    Carolina and southern Virginia by early afternoon. A Severe
    Thunderstorm Watch may be needed.

    DISCUSSION...A cluster of storms developed along a pre-frontal
    trough this morning across western North Carolina. There have been a
    few reports of wind damage and measured wind gusts of 30 to 40 mph.
    The environment continues to improve ahead of this activity with
    temperatures in the low 80s and dewpoints in the low to mid 70s
    yielding an uncapped airmass according to SPC mesoanalysis.
    Therefore, despite 12Z CAM guidance insistence this morning activity
    should dissipate, expect it to continue eastward as destabilization
    continues with MLCAPE around 1500 to 2000 J/kg by early to
    mid-afternoon. Effective shear around 30 to 35 knots will support
    multicell storm clusters and potentially some rotating updrafts.
    However, a warm/moist thermodynamic profile should limit hail
    potential with water loaded-downdrafts as the primary threat.=20
    A Severe Thunderstorm Watch may be needed shortly to cover the
    threat from the ongoing storms and any additional development which
    may occur.

    ..Bentley/Mosier.. 07/09/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-oOYOWFbxxovKtskVETJEDCiE78ohNQY0cOKfo825eZNRwlQ2LgO2RsnGV1j_gTn4N0AlxllI= DM6hucWOrl-Z0sRJpU$ for graphic product...

    ATTN...WFO...AKQ...RAH...ILM...RNK...CAE...GSP...

    LAT...LON 35518122 36058060 36568018 37027921 37097787 36077749
    34857858 34587971 34808083 35518122=20


    =3D =3D =3D
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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Jul 9 15:32:24 2023
    ACUS11 KWNS 091532
    SWOMCD
    SPC MCD 091531 COR
    NCZ000-VAZ000-SCZ000-091700-

    Mesoscale Discussion 1473
    NWS Storm Prediction Center Norman OK
    1031 AM CDT Sun Jul 09 2023

    Areas affected...Central North Carolina and south-central Virginia

    Concerning...Severe potential...Watch possible=20

    Valid 091531Z - 091700Z

    CORRECTED FOR MISSING WORD IN DISCUSSION

    Probability of Watch Issuance...60 percent

    SUMMARY...A damaging wind threat will increase across central North
    Carolina and southern Virginia by early afternoon. A Severe
    Thunderstorm Watch may be needed.

    DISCUSSION...A cluster of storms developed along a pre-frontal
    trough this morning across western North Carolina. There have been a
    few reports of wind damage and measured wind gusts of 30 to 40 mph.
    The environment continues to improve ahead of this activity with
    temperatures in the low 80s and dewpoints in the low to mid 70s
    yielding an uncapped airmass according to SPC mesoanalysis.
    Therefore, despite some 12Z CAM guidance insistence this morning
    activity should dissipate (ie. 12Z HRRR), expect it to continue
    eastward as destabilization continues with MLCAPE around 1500 to
    2000 J/kg by early to mid-afternoon. Effective shear around 30 to 35
    knots will support multicell storm clusters and potentially some
    rotating updrafts. However, a warm/moist thermodynamic profile
    should limit hail potential with water loaded-downdrafts as the
    primary threat. A Severe Thunderstorm Watch may be needed shortly to
    cover the threat from the ongoing storms and any additional
    development which may occur.

    ..Bentley/Mosier.. 07/09/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8EvFPXduxiVQvAOyHhzKtu-ScNqvTKTWwe8WMh8UYEaIXJnv1Qb9Ha_AEMtrP8HumRQeq5o4Z= CvK66kBwZFBHCvieeE$ for graphic product...

    ATTN...WFO...AKQ...RAH...ILM...RNK...CAE...GSP...

    LAT...LON 35518122 36058060 36568018 37027921 37097787 36077749
    34857858 34587971 34808083 35518122=20


    =3D =3D =3D
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

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