• MESO: Mesoscale Discussion 1044

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, June 06, 2022 00:33:27
    ACUS11 KWNS 060033
    SWOMCD
    SPC MCD 060032=20
    OKZ000-KSZ000-060300-

    Mesoscale Discussion 1044
    NWS Storm Prediction Center Norman OK
    0732 PM CDT Sun Jun 05 2022

    Areas affected...Parts of southwest/south-central KS and northern OK

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

    Valid 060032Z - 060300Z

    Probability of Watch Issuance...60 percent

    SUMMARY...The area is being monitored for an increasing severe risk
    into this evening. A watch could eventually be needed for parts of
    the area.

    DISCUSSION...Latest visible satellite loops show recovering
    sheltered boundary layer air and backed surface winds over parts of southwest/south-central KS into northern OK ahead of a weak surface
    low and dryline evident over the TX/OK Panhandles. While this air
    remains slightly capped amid generally weak large-scale ascent per
    the DDC 00z sounding and visible satellite imagery, a few deepening
    cumulus towers are becoming evident along the eastern and southern
    edge of anvil debris overspreading the area from eastern CO. As lift
    along the nose of a strengthening low-level jet advances northward
    this evening in conjunction with a passing shortwave trough,
    eventual convective initiation will be possible where surface
    convergence is being maximized ahead of the surface low, though
    large uncertainty remains.=20

    If isolated convection can initiate along this corridor prior to
    substantial nocturnal boundary-layer cooling, increasingly large, clockwise-turning low-level hodographs (200-400+ m2/s2 effective
    SRH) amid strong instability would support a discrete supercell or
    two along the KS/OK border capable of all hazards prior to upscale
    growth with southward extent. Timing and location of convective
    initiation and subsequent evolution is still unclear, though current
    thinking is that a watch could eventually be needed for parts of the
    area this evening.

    ..Weinman/Hart.. 06/06/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4qTYsU9Pn2qh-JcjYga0PzVccwcGn0NA8cXOyifU7FGfKuOrEjVSomK9H6EouWDSWEAyp35FS= LiFJq7l-LWlYHFZBXk$ for graphic product...

    ATTN...WFO...TSA...ICT...OUN...DDC...AMA...

    LAT...LON 37369727 36729658 36009644 35819676 35779768 35799878
    35869946 36169981 36569993 36800017 37050032 37490043
    37860031 38059984 38099907 37959831 37369727=20


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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, June 14, 2023 19:53:31
    ACUS11 KWNS 141953
    SWOMCD
    SPC MCD 141952=20
    GAZ000-FLZ000-142145-

    Mesoscale Discussion 1044
    NWS Storm Prediction Center Norman OK
    0252 PM CDT Wed Jun 14 2023

    Areas affected...Portions of southeastern/coastal GA and far north
    FL

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

    Valid 141952Z - 142145Z

    Probability of Watch Issuance...60 percent

    SUMMARY...An increasing threat for large hail, damaging winds, and
    perhaps a couple of tornadoes may prompt watch issuance this
    afternoon.

    DISCUSSION...In the wake of earlier convection this morning, some
    airmass recovery has occurred across parts of southeastern/coastal
    GA and north FL. Recent radar imagery shows an outflow boundary from
    prior thunderstorms is still continuing southward along/near the
    FL/GA line. But, filtered daytime heating to the north of this
    boundary has allowed surface temperatures to generally increase into
    the low to mid 80s downstream of multiple supercells ongoing across southwestern into south-central GA. There are still some concerns
    about instability due to a large area of remnant stratiform
    precipitation, with MLCAPE quickly dropping off with northward
    extent across coastal GA into southern SC. Regardless, deep-layer
    shear still appears strong enough (35-45+ kt) to support supercells.
    Current expectations are for the ongoing supercells to spread
    eastward over the next few hours, while posing a threat for large
    hail and damaging winds. Enough low-level shear is also present to
    foster low-level updraft rotation and some risk for a couple of
    tornadoes. Convective trends will be monitored for possible watch
    issuance this afternoon.

    ..Gleason/Thompson.. 06/14/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-gDyurmKFMBRSL1hd4-uPp_CDalSldYSvvvQh9_z-r0f6wvO14P7IPHOhFoixyRC1NfUwyRz4= eIZ-JoNYlBYqL_OF_U$ for graphic product...

    ATTN...WFO...CHS...JAX...FFC...

    LAT...LON 30908289 31808294 32068317 32108246 31958174 31618109
    31008140 30398135 30338212 30648308 30908289=20


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