• MESO: Mesoscale Discussion 1011

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, June 02, 2022 02:46:34
    ACUS11 KWNS 020246
    SWOMCD
    SPC MCD 020245=20
    TXZ000-OKZ000-NMZ000-020445-

    Mesoscale Discussion 1011
    NWS Storm Prediction Center Norman OK
    0945 PM CDT Wed Jun 01 2022

    Areas affected...Portions of far eastern NM into northwest TX...the
    TX Panhandle...and southwestern OK

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

    Valid 020245Z - 020445Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Isolated severe hail may occur with elevated thunderstorms
    this evening. Watch issuance is not expected.

    DISCUSSION...Scattered to numerous thunderstorms have developed this
    evening to the north of a surface cold front. Some of this elevated
    convection has shown sufficient intensity to support marginally
    severe hail over the past hour or two. The presence of modestly
    steepened mid-level lapse rates evident on the 00Z sounding from
    AMA, and sufficient moisture remaining above the shallow front, are contributing to upwards of 1500-2000 J/kg of MUCAPE. Strengthening
    westerly flow through through the cloud-bearing layer in mid/upper
    levels is fostering 40-50+ kt of deep-layer shear, which is more
    than sufficient for organized convection. Some of these elevated
    thunderstorms have shown signs of being supercells, with an
    associated threat for occasional severe hail. At this point, current expectations are for this activity to remain elevated and pose
    mainly a threat for isolated hail for the next couple of hours. One
    exception may be a robust supercell in western north TX (Baylor
    County TX at 0245Z) that is currently moving slowly southeastward
    towards the surface front/outflow boundary. If this supercell can
    become surface based, it could pose a threat for severe/damaging
    winds in addition to large hail. Regardless, current expectations
    are for the overall severe threat to remain too isolated to justify
    watch issuance.

    ..Gleason/Hart.. 06/02/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9sQtII7n4Ih8VwI3TfHnet1M4BxHuiNveLz_1DS3KW4RirbUutMkjclRNoOe2yOPCyBEfA7xe= E-MB4SAFeNTF5mWXNw$ for graphic product...

    ATTN...WFO...FWD...OUN...SJT...LUB...AMA...MAF...ABQ...

    LAT...LON 33440413 34180404 34850257 35210168 35350053 35199946
    34629847 33839796 32999810 32749878 32909943 33390002
    33640127 33290261 33150324 33220380 33440413=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.

    --- SBBSecho 3.14-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 Tuesday, June 13, 2023 13:03:14
    ACUS11 KWNS 131303
    SWOMCD
    SPC MCD 131302=20
    LAZ000-ARZ000-TXZ000-OKZ000-131430-

    Mesoscale Discussion 1011
    NWS Storm Prediction Center Norman OK
    0802 AM CDT Tue Jun 13 2023

    Areas affected...ArkLaTex region

    Concerning...Severe Thunderstorm Watch 279...

    Valid 131302Z - 131430Z

    The severe weather threat for Severe Thunderstorm Watch 279
    continues.

    SUMMARY...Some threat for hail and locally damaging gusts will
    continue to spread east-southeast this morning. Local expansion of
    WW 279 may be needed.

    DISCUSSION...An earlier supercell near the Metroplex has dissipated,
    but vigorous storms are persisting this morning closer to the
    ArkLaTex region, within an unstable and favorably sheared
    environment. Some weakening and veering of the low-level jet is
    expected with time this morning, lending some uncertainty regarding
    the longevity of severe potential into mid morning. However, with
    downstream MUCAPE remaining above 2000 J/kg and favorable deep-layer
    flow/shear expected to persist, somewhat organized cells/clusters
    may continue southeastward with a hail and damaging wind risk, which
    may require local expansion of WW 279 in the short term as storms
    move into a larger portion of southern AR and northern LA. The need
    for additional downstream watch issuance later this morning remains
    uncertain, but will be possible if organized storms persist over the
    next 2-3 hours.

    ..Dean/Guyer.. 06/13/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9GpZv0MIzXMxgz6_QrejvcULZnHlaVQjl9PckmhkVZbv689_MIyC9psEYMyjelk-PiYitwW57= DmisPbaFvAvR6NvmjQ$ for graphic product...

    ATTN...WFO...JAN...LZK...SHV...TSA...FWD...OUN...

    LAT...LON 31949342 32279512 32769606 33399651 34039634 33979613
    34179383 33919299 33309157 32299136 31889152 31669204
    31719264 31949342=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.

    --- SBBSecho 3.14-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)