• MESO: Mesoscale Discussion 1065

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tuesday, June 07, 2022 05:48:36
    ACUS11 KWNS 070548
    SWOMCD
    SPC MCD 070548=20
    OKZ000-TXZ000-070745-

    Mesoscale Discussion 1065
    NWS Storm Prediction Center Norman OK
    1248 AM CDT Tue Jun 07 2022

    Areas affected...Oklahoma Panhandle...Northeast Texas Panhandle and
    Northwest Oklahoma

    Concerning...Severe Thunderstorm Watch 317...

    Valid 070548Z - 070745Z

    The severe weather threat for Severe Thunderstorm Watch 317
    continues.

    SUMMARY...A threat for wind damage and large hail will spread
    southeastward across parts of the northeastern Texas Panhandle and
    into northwest Oklahoma over the next few hours. Wind gusts above 70
    knots will be possible along the lead edge of a short line of severe
    storms. A weather watch has just been issued south of this area.

    DISCUSSION...The latest high-resolution radar imagery from Dodge
    City shows a short bowing line segment near the Kansas-Oklahoma
    state-line north of Guymon in the Oklahoma Panhandle. The bowing
    line segment was located on the western end of moderate instability
    extending east-southeastward across the northeast Texas Panhandle
    and northwest Oklahoma. The bowing line segment produced a 67 knot
    wind gust at Guymon, and the line is expected to track southeastward
    into the northeastern Texas Panhandle over the hour or two. For this
    reason, a severe thunderstorm watch has recently been issued to the
    south of WW 317.

    ..Broyles.. 06/07/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9fOUBBv0WN_rHHdPtukob3DvoPlh-ze8bVuC6CSeeUN6pdF_dyLDoa-ZiQGYGDzXwClfkTElF= 4dRrTC4bw9AZ0GpU4c$ for graphic product...

    ATTN...WFO...OUN...AMA...

    LAT...LON 35600059 35539958 35689884 35989858 36369846 36599868
    36709936 36720063 36710133 36610190 36370205 36060199
    35810172 35670132 35600059=20


    =3D =3D =3D
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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, June 15, 2023 08:53:12
    ACUS11 KWNS 150853
    SWOMCD
    SPC MCD 150852=20
    ALZ000-FLZ000-MSZ000-151015-

    Mesoscale Discussion 1065
    NWS Storm Prediction Center Norman OK
    0352 AM CDT Thu Jun 15 2023

    Areas affected...Far southern MS...South AL...FL Panhandle

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

    Valid 150852Z - 151015Z

    Probability of Watch Issuance...40 percent

    SUMMARY...The severe thunderstorm threat may increase with time this
    morning. Watch issuance is possible.

    DISCUSSION...Initially shallow convection has recently deepened
    northeast of Mobile, just to the north of an outflow-reinforced
    surface boundary. While this deeper convection is likely somewhat
    elevated, MUCAPE of greater than 2000 J/kg and effective shear of
    50+ kt will support supercell potential, with a threat of large hail
    and perhaps locally damaging gusts. Additional storm development is
    possible with time this morning as shallow convection that initiates
    within the effective warm sector deepens near/north of the boundary.

    The potential for truly surface-based storm development is more
    uncertain, due to a capping inversion between 850-700 mb, and a
    tendency for warm-sector convection to quickly cross to the cool
    side of the boundary. However, with MLCAPE in excess of 2500 J/kg
    and favorable shear, a surface-based supercell cannot be ruled out,
    especially if some modification can occur north of the boundary
    later this morning. Any sustained surface-based supercell would pose
    a conditional risk of all severe hazards.=20

    Coverage of the severe threat in the near term remains uncertain,
    but watch issuance is possible if trends support the development of
    multiple supercells across the region.

    ..Dean/Guyer.. 06/15/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!79h_tiIJeoOPRWM7z6imJxYOBqiMTevGOPL4kCfrSOp4Fu4IxnEnFnD_9sZAFyIao4-qjn5vy= 821BTbJ9IQR_KkzxxE$ for graphic product...

    ATTN...WFO...TAE...MOB...LIX...

    LAT...LON 30488915 31448780 31638634 31278616 30778650 30558681
    30418711 30398761 30388812 30398873 30488915=20


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