• MESO: Mesoscale Discussion 0374

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, March 31, 2022 08:54:47
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    ACUS11 KWNS 310854
    SWOMCD
    SPC MCD 310854=20
    FLZ000-GAZ000-ALZ000-311100-

    Mesoscale Discussion 0374
    NWS Storm Prediction Center Norman OK
    0354 AM CDT Thu Mar 31 2022

    Areas affected...Southeast Alabama...Southwest Georgia...Florida
    Panhandle

    Concerning...Tornado Watch 84...

    Valid 310854Z - 311100Z

    The severe weather threat for Tornado Watch 84 continues.

    SUMMARY...A threat for damaging wind gusts, isolated large hail and
    a tornado or two will continue early this morning across parts of
    southeast Alabama, southwest Georgia and the Florida Panhandle. New
    watch issuance will need be to considered to the east of the current
    watch.

    DISCUSSION...Latest mosaic radar imagery shows an organized
    convective line extending from near Dothan, Alabama extending north-northeastward to Columbus, Georgia. A shortwave trough with a
    band of large-scale ascent is located over far southwest Georgia,
    evident on water-vapor imagery. This feature will move northeastward
    this morning into south-central Georgia providing support for
    continued thunderstorm development. In addition, the WSR-88D VWP out
    of Valdosta, Georgia has 0-6 km shear near 65 kt with a looped
    hodograph. This will be favorable for supercells embedded in the
    line with a potential for tornadoes. These storms could also produce
    wind damage and isolated large hail, especially with segments that
    obtain bowing structure. The severe threat should continue through
    daybreak. New weather watch issuance may become necessary to the
    east of WW 84.

    ..Broyles.. 03/31/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!pPYDLK6KCLirBtIB_Fnu51zoExQGZ2ecq1H5UluZpnLTZdrvR-mGrifUtnmaQ6VKAoMf78JO$=
    for graphic product...

    ATTN...WFO...FFC...TAE...BMX...

    LAT...LON 32328379 32828446 32648499 32208525 30968563 30428613
    29968648 29518632 29098557 29028455 29598387 30078370
    32328379=20



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, March 27, 2023 17:14:00
    ACUS11 KWNS 271713
    SWOMCD
    SPC MCD 271713=20
    SCZ000-GAZ000-FLZ000-ALZ000-271915-

    Mesoscale Discussion 0374
    NWS Storm Prediction Center Norman OK
    1213 PM CDT Mon Mar 27 2023

    Areas affected...Far Southeast AL...Southern GA...Far Southern SC

    Concerning...Severe Thunderstorm Watch 92...

    Valid 271713Z - 271915Z

    The severe weather threat for Severe Thunderstorm Watch 92
    continues.

    SUMMARY...Threat for damaging gusts and isolated hail continues
    across far southeast AL, southern GA, and far southern SC.

    DISCUSSION...Clusters of showers and thunderstorms continue along
    the composite outflow boundary that extends from far southeast AL
    northeastward into southern SC. Forward propagation has been noted
    within the linear segment moving across east-central GA towards the
    southern GA/SC and a separate linear segment moving across central
    GA. Damaging gusts remain possible within these bowing segments. A
    more clustered storm mode is evident across far southeast AL, where
    some hail is possible, particularly as a result of cell
    interactions. Given the convective evolution observed farther north,
    the expectation is for this cluster to trend more linear as well,
    with an attendant threat for damaging gusts. The tornado threat with
    all of these storms/clusters is low, owing primarily to veered
    low-level winds ahead of the outflow.

    ..Mosier.. 03/27/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_gVIYP63fYHjcIlwegeHIUuNP9EG96ztVF9PoAEwKEih1UjUw-NO3VRrgI4Kz7ZY-DsxST8x0= qm2Acfs9VINxa-iwr8$ for graphic product...

    ATTN...WFO...CHS...CAE...JAX...FFC...TAE...BMX...MOB...

    LAT...LON 31228621 32038554 33058160 32358082 31508142 31288397
    30968558 31228621=20


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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, April 03, 2024 21:31:52
    ACUS11 KWNS 032131
    SWOMCD
    SPC MCD 032131=20
    IDZ000-ORZ000-032300-

    Mesoscale Discussion 0374
    NWS Storm Prediction Center Norman OK
    0431 PM CDT Wed Apr 03 2024

    Areas affected...portions of far eastern Oregon into western and
    central Idaho

    Concerning...Severe potential...Watch unlikely=20

    Valid 032131Z - 032300Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Isolated strong wind gusts and instances of hail may
    accompany the stronger storms this afternoon into early evening. The
    severe threat is expected to be sparse and localized.

    DISCUSSION...Multiple pulse cellular storms and multicells have
    recently developed to the east of a cloud deck in the past couple of
    hours over far eastern OR into southwestern ID. Here, diurnal
    heating has encouraged surface temperatures to warm into the mid 60s
    F amid mid 30s-40s F dewpoints, that in tandem with steep lapse
    rates, has boosted SBCAPE to 500-1000 J/kg. RAP forecast soundings
    and regional VADs depict curved, elongated hodographs, indicating
    the presence of strong deep-layer shear, with 21Z mesoanalysis
    depicting over 40 kts of effective bulk shear. Forecast soundings
    show thin CAPE profiles atop a dry, well-mixed boundary layer. As
    such, brief and localized instances of strong wind gusts and perhaps
    some hail may occur with the stronger multicells or any transient
    supercells that can develop. Nonetheless, the severe threat is
    expected to remain isolated.

    ..Squitieri/Guyer.. 04/03/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8jL3TJaY0GTEfz6NGXBy8U52ECN2HhqEXh2PB8N82GDlTdQ-2t41rP3pZPQj5gceYthjLLOVQ= wdFDMev56A7zUm0jKg$ for graphic product...

    ATTN...WFO...PIH...MSO...BOI...

    LAT...LON 42631780 43031797 43501784 44021731 44651652 45021469
    44831408 44551392 44271389 43741444 43491492 43161597
    42811705 42631780=20


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