• MESO: Mesoscale Discussion 0401

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tuesday, April 05, 2022 03:21:15
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    ACUS11 KWNS 050321
    SWOMCD
    SPC MCD 050320=20
    ARZ000-TXZ000-050415-

    Mesoscale Discussion 0401
    NWS Storm Prediction Center Norman OK
    1020 PM CDT Mon Apr 04 2022

    Areas affected...Northeast Texas

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

    Valid 050320Z - 050415Z

    Probability of Watch Issuance...80 percent

    SUMMARY...Tornado watch will likely be issued across the remainder
    of northeast Texas and vicinity by 04z.

    DISCUSSION...Southwest-northeast oriented MCS has evolved over
    north-central TX late this evening. While hail has been the
    predominant severe reported, the northern portion of the squall line
    near the warm front has taken more bowing characteristics. Over the
    last hour or so, this portion of the line segment has increased to
    near 40kt with KTKI reporting 43kt with this line passage. By 05z
    this activity will have progressed to the eastern edge of ww92.
    Additionally, scattered discrete updrafts continue to develop ahead
    of the squall line within the warm advection zone and these could
    evolve into supercells within a strongly sheared environment.
    Tornado watch will likely be issued by 04z to account for this
    activity shifting downstream.

    ..Darrow/Thompson.. 04/05/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!v6Zn9UVSA1amAxdm_nm-dd0iXRaVQq7P1fYm-ZCrunJ4PtF1an_lJ1jaYpoWAepnbk09ZYa-$=
    for graphic product...

    ATTN...WFO...SHV...FWD...

    LAT...LON 33659520 33279401 32359433 32359566 33659520=20



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Friday, March 31, 2023 19:37:01
    ACUS11 KWNS 311936
    SWOMCD
    SPC MCD 311936=20
    ARZ000-312000-

    Mesoscale Discussion 0401
    NWS Storm Prediction Center Norman OK
    0236 PM CDT Fri Mar 31 2023

    Areas affected...Central Arkansas

    Concerning...Tornado Watch 94...

    Valid 311936Z - 312000Z

    The severe weather threat for Tornado Watch 94 continues.

    SUMMARY...A confirmed tornado is ongoing within the southwestern
    Little Rock metro area. Downstream environment will remain favorable
    for this tornado to continue.

    DISCUSSION...A tornadic supercell now entering the Little Rock metro
    area has shown increasing organization over the last 30 minutes. As
    of 223 PM CDT a confirmed tornado was moving northeastward. The KLZK
    VAD shows strong veering in the lowest 1 km (over 400+ SRH). VROT
    was observed to be 74 kts. Given the environment and radar
    signature, this would suggest a likely intense (EF3) tornado.
    Furthermore the low/mid 60s F dewpoints downstream and unimpeded
    inflow, the expectation is for this storm to continue to pose a
    threat for potentially strong tornado over the next hour at least.

    ..Wendt.. 03/31/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5zoy8DOrpklC0B41pnclKsj3_9yFEznquhQZe5z41yOlQstDIwGtpAExy9KFCxtlcpJgduRhr= bSRoHryaitSgNREFCc$ for graphic product...

    ATTN...WFO...MEG...LZK...

    LAT...LON 34729240 34839248 35039242 35199212 35439149 35369097
    35359095 34949098 34779162 34729240=20


    =3D =3D =3D
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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tuesday, April 09, 2024 22:17:19
    ACUS11 KWNS 092217
    SWOMCD
    SPC MCD 092217=20
    MSZ000-LAZ000-TXZ000-092345-

    Mesoscale Discussion 0401
    NWS Storm Prediction Center Norman OK
    0517 PM CDT Tue Apr 09 2024

    Areas affected...northern Louisiana

    Concerning...Tornado Watch 95...

    Valid 092217Z - 092345Z

    The severe weather threat for Tornado Watch 95 continues.

    SUMMARY...A line of storms will move east this evening with a threat
    for severe wind gusts and potentially a few tornadoes.

    DISCUSSION...A well organized bowing-segment continue east across
    northern Louisiana. This bow will continue to pose a threat for
    severe wind gusts. In addition, a few tornadoes are possible given
    around 150 m2/s2 0-1 SRH and several mesovorticies within the line.
    The greatest tornado potential may be on the northern periphery of
    the bow where the UDCZ is becoming more normal to the low-level
    shear vector. In addition, it appears a meso-low and potential
    "comma head" may be starting to form. Eventually, this line of
    storms will move into weaker instability and weaker low-level flow
    across Mississippi which will likely result in weakening of this
    bow.

    ..Bentley.. 04/09/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-yvjvAYecArFYNkKc1c3BL4LeUivk09WKlcctu0yUpkzUPHoMQM6iWR86uc_JuHjrjr0ddo30= QU0kzmvF_TaAFGfzfQ$ for graphic product...

    ATTN...WFO...JAN...LCH...SHV...

    LAT...LON 31349402 31579404 31879380 32069340 32249321 32439313
    32689321 32879240 32779167 32409119 31629131 31299188
    31339339 31349402=20


    =3D =3D =3D
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