• MESO: Mesoscale Discussion 0516

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Friday, May 25, 2018 16:22:13
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    ACUS11 KWNS 251622
    SWOMCD
    SPC MCD 251621
    TXZ000-OKZ000-251845-

    Mesoscale Discussion 0516
    NWS Storm Prediction Center Norman OK
    1121 AM CDT Fri May 25 2018

    Areas affected...North Texas

    Concerning...Severe potential...Watch unlikely

    Valid 251621Z - 251845Z

    Probability of Watch Issuance...5 percent

    SUMMARY...A few strong wind gusts are possible as storms move south
    across the area today, but severe weather is not expected.

    DISCUSSION...A complex of storms with southward-surging outflow is
    currently crossing the Red River into TX. These storms are not
    severe as of 16Z, but have produced 30-40 mph wind gusts. Some
    increase in intensity is possible this afternoon.

    The 12Z FWD sounding shows around 3000 J/kg MUCAPE when modified for
    current surface conditions. Although shear profiles are weak, storms
    are expected to forward-propagate and maintain and/or increase
    slightly. An isolated severe wind gust cannot be ruled out, but
    severe coverage is not expected to warrant a watch at this time. In
    addition to wind, marginal hail is possible as well given cool
    temperatures aloft and substantial instability.

    ..Jewell/Hart.. 05/25/2018

    ...Please see www.spc.noaa.gov for graphic product...

    ATTN...WFO...SHV...TSA...FWD...OUN...

    LAT...LON 33709778 33749686 33889614 34109570 33539493 32829470
    32139494 31779563 31849652 32209727 32719768 33099791
    33259796 33709778



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Friday, May 03, 2019 18:26:42
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    ACUS11 KWNS 031826
    SWOMCD
    SPC MCD 031826
    TXZ000-NMZ000-032100-

    Mesoscale Discussion 0516
    NWS Storm Prediction Center Norman OK
    0126 PM CDT Fri May 03 2019

    Areas affected...Southeast New Mexico...West Texas

    Concerning...Severe potential...Watch possible

    Valid 031826Z - 032100Z

    Probability of Watch Issuance...40 percent

    SUMMARY...A large hail and wind damage threat is expected to develop
    this afternoon. Weather watch issuance may be needed if storm
    coverage ends up being great enough.

    DISCUSSION...Latest surface analysis shows a 1006 mb low near El
    Paso. A relatively moist airmass is located across the Pecos Valley
    extending north-northeastward onto the Caprock. Surface winds are
    backed to the southeast. Thunderstorms are expected to develop
    across far southeast New Mexico and in west Texas over the next
    couple of hours as low-level convergence increases on the western
    edge of the moist airmass. In addition to moderate instability, the
    RAP is analyzing a pocket of steep mid-level lapse rates from
    southeast New Mexico into west Texas where 700-500 mb lapse rates
    are estimated at 8.5 to 9.0 C/km. This along with moderate
    deep-layer shear will be sufficient for supercells with large hail.
    A wind damage threat is also expected. The most likely time for cell
    initiation would be between 1900Z and 2000Z with the severe threat
    persisting through the late afternoon and early evening.

    ..Broyles/Guyer.. 05/03/2019

    ...Please see www.spc.noaa.gov for graphic product...

    ATTN...WFO...EWX...SJT...LUB...MAF...ABQ...

    LAT...LON 29330190 30990158 32750166 33530181 33820199 34120227
    34260279 34180313 33840341 33170370 32160374 31000353
    29600373 29060303 29330190



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