• MESO: Mesoscale Discussion 1206

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Jul 9 00:08:52 2021
    This is a multi-part message in MIME format...

    ------------=_1625789337-59769-5468
    Content-Type: text/plain
    Content-Transfer-Encoding: Quoted-printable

    ACUS11 KWNS 090008
    SWOMCD
    SPC MCD 090008=20
    NEZ000-SDZ000-NDZ000-090145-

    Mesoscale Discussion 1206
    NWS Storm Prediction Center Norman OK
    0708 PM CDT Thu Jul 08 2021

    Areas affected...Southwestern South Dakota

    Concerning...Severe Thunderstorm Watch 354...

    Valid 090008Z - 090145Z

    The severe weather threat for Severe Thunderstorm Watch 354
    continues.

    SUMMARY...Hailstones greater than 2 inches in diameter will be
    possible with a supercell moving southeastward across western South
    Dakota over the next couple of hours. Wind driven hail and damaging
    wind gusts exceeding 70 knots will also be possible.

    DISCUSSION...High resolution radar from Rapid City shows a
    well-developed intense supercell located about 20 statute miles to
    the east of Rapid City. Another supercell is located in far
    southwestern North Dakota. The environment ahead of the storms is
    characterized by moderate instability with MLCAPE near 2000 J/kg,
    strong deep-layer shear and steep mid-level lapse rates. The 00Z
    sounding from Rapid City shows 0-6 km near 75 kt with 700-500 mb
    lapse rate of 8.0 C/km. This will continue to support intense
    supercell development over the next couple of hours. Hailstones of
    greater than 2 inches in diameter will be possible within the
    strongest part of each storm. Wind driven hail and wind gusts
    exceeding 70 knots will also be possible. These two storms are
    expected to produce swaths of large hail and wind damage, oriented
    to the southeast across parts of western South Dakota.

    ..Broyles/Thompson/Smith.. 07/09/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!u_zvFikSIYwYxd14taSFT_XPa4H-eYKTgaG0d6HHNH5E6nicQMcLA58XL_tQo1kEYRUIMlKk$=
    for graphic product...

    ATTN...WFO...ABR...BIS...LBF...UNR...

    LAT...LON 45980219 45670186 45070145 44270123 42930133 42760158
    42720191 42920247 43400289 44610321 45420329 45880312
    45950284 45980219=20



    ------------=_1625789337-59769-5468
    Content-Type: text/plain; charset="US-ASCII"
    Content-Disposition: inline
    Content-Transfer-Encoding: 7BIT

    = = =
    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. ------------=_1625789337-59769-5468--

    --- SBBSecho 3.12-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)
  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Jul 9 00:13:51 2021
    This is a multi-part message in MIME format...

    ------------=_1625789634-59769-5472
    Content-Type: text/plain
    Content-Transfer-Encoding: Quoted-printable

    ACUS11 KWNS 090013
    SWOMCD
    SPC MCD 090013 COR
    NEZ000-SDZ000-NDZ000-090145-

    Mesoscale Discussion 1206
    NWS Storm Prediction Center Norman OK
    0713 PM CDT Thu Jul 08 2021

    Areas affected...Western South Dakota

    Concerning...Severe Thunderstorm Watch 354...

    Valid 090013Z - 090145Z

    CORRECTED FOR AREAS AFFECTED

    The severe weather threat for Severe Thunderstorm Watch 354
    continues.

    SUMMARY...Hailstones greater than 2 inches in diameter will be
    possible with two supercells moving southeastward across western
    South Dakota over the next couple of hours. Wind driven hail and
    damaging wind gusts exceeding 70 knots will also be possible.

    DISCUSSION...High resolution radar from Rapid City shows a
    well-developed intense supercell located about 20 statute miles to
    the east of Rapid City. Another supercell is located in far
    southwestern North Dakota. The environment ahead of the storms is
    characterized by moderate instability with MLCAPE near 2000 J/kg,
    strong deep-layer shear and steep mid-level lapse rates. The 00Z
    sounding from Rapid City shows 0-6 km near 75 kt with 700-500 mb
    lapse rate of 8.0 C/km. This will continue to support intense
    supercell development over the next couple of hours. Hailstones of
    greater than 2 inches in diameter will be possible within the
    strongest part of each storm. Wind driven hail and wind gusts
    exceeding 70 knots will also be possible. These two storms are
    expected to produce swaths of large hail and wind damage, oriented
    to the southeast across parts of western South Dakota.

    ..Broyles/Thompson/Smith.. 07/09/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!qjUkSB5ZhqysFoIUmL0TfhN9MfcjNzENGvwEV31hbJ5WYwjqoOBfpyHLwkC3Fv0qrxWbZWMZ$=
    for graphic product...

    ATTN...WFO...ABR...BIS...LBF...UNR...

    LAT...LON 45980219 45670186 45070145 44270123 42930133 42760158
    42720191 42920247 43400289 44610321 45420329 45880312
    45950284 45980219=20



    ------------=_1625789634-59769-5472
    Content-Type: text/plain; charset="US-ASCII"
    Content-Disposition: inline
    Content-Transfer-Encoding: 7BIT

    = = =
    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. ------------=_1625789634-59769-5472--

    --- SBBSecho 3.12-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)