1. Forum
  2. FidoNet
  3. WEATHER

  • MESO: Mesoscale Discussion 1413

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Jul 3 23:57:23 2023
    ACUS11 KWNS 032357
    SWOMCD
    SPC MCD 032356=20
    SDZ000-WYZ000-040130-

    Mesoscale Discussion 1413
    NWS Storm Prediction Center Norman OK
    0656 PM CDT Mon Jul 03 2023

    Areas affected...Southwestern South Dakota

    Concerning...Severe Thunderstorm Watch 441...

    Valid 032356Z - 040130Z

    The severe weather threat for Severe Thunderstorm Watch 441
    continues.

    SUMMARY...The severe risk continues across Severe Thunderstorm Watch
    441 this evening. The primary concern over southwestern South Dakota
    is large hail up to 2 inches in diameter in the near-term.

    DISCUSSION...Over the Black Hills, latest radar data from KUDX shows regenerative supercell development near a mesoscale low along an ENE-WSW-oriented stationary boundary draped across the area. A feed
    of high boundary-layer theta-e into this region should continue to
    support surface-based inflow for these storms. And, 35-40 kt of 0-6
    km shear (per UDX VWP data) in the presence of generally weak
    large-scale ascent will favor a continued discrete/semi-discrete
    supercell mode. Large hail up to 2 inches in diameter is the main
    concern with this activity, though locally severe winds are also
    possible. While less certain, a brief tornado cannot be entirely
    ruled out, given backed surface winds near the mesoscale low and
    related enhancement to boundary-layer streamwise vorticity for the
    ongoing supercells.

    ..Weinman.. 07/03/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5d8I8roGB2ebKBZ7vbIx3isQxATNiuOZ3T5mc_azze337keAQo554iooP6oqSt2rnhcF_tYIY= wx9_agGH8UQcsHiTWw$ for graphic product...

    ATTN...WFO...UNR...

    LAT...LON 43400387 43760424 44040429 44320417 44560385 44590351
    44580315 44480273 44260247 44120227 43540224 43280252
    43230307 43270355 43400387=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)