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Mesoscale Discussion 678
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   Mesoscale Discussion 0678
   NWS Storm Prediction Center Norman OK
   0926 PM CDT Fri May 22 2020

   Areas affected...Southern Oklahoma...North Texas

   Concerning...Severe Thunderstorm Watch 205...

   Valid 230226Z - 230430Z

   The severe weather threat for Severe Thunderstorm Watch 205
   continues.

   SUMMARY...A severe threat will continue through mid to late evening.
   Large hail, wind damage and a couple tornadoes will be possible.

   DISCUSSION...A growing convective cluster is ongoing near and just
   to the south of the Red River in the vicinity of Wichita Falls,
   Texas. This cluster is located very near a maximum of instability
   with the RAP estimating MLCAPE near 4500 J/kg. The strong
   instability combined with 40 kt of 0-6 km shear, evident on the Fort
   Worth WSR-88D VWP, will be favorable for supercells with large hail.
   The more vigorous updrafts may produce hailstones greater than 2
   inches in diameter. A tornado threat will also exist with the more
   dominant supercells within this cluster. The severe threat should
   gradually transition eastward across north Texas over the next few
   hours. A severe threat may also occur in far southern Oklahoma. In
   addition to large hail, a wind damage threat should exist and may
   increase as cells gradually expand in coverage and become more
   linear in nature.

   ..Broyles.. 05/23/2020

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

   ATTN...WFO...TSA...FWD...OUN...SJT...

   LAT...LON   32569755 32550013 32940014 32969997 34210000 34089985
               34079964 34039948 34419945 34409932 34339923 34579916
               34669900 34609884 34839879 34839858 35539857 35539829
               35309829 35369771 35409763 35439719 35469710 35459643
               35299646 35309599 35149597 35099609 34689612 34679586
               34599586 34589571 34539567 34509576 34189576 34169595
               33979592 33969588 33779587 33399591 33359628 32959632
               32979755 32569755 

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Page last modified: May 23, 2020
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