Mesoscale Discussion 0472
   NWS Storm Prediction Center Norman OK
   0719 PM CDT Fri Apr 24 2020

   Areas affected...southeastern Oklahoma and northeast Texas into the
   Arklatex

   Concerning...Tornado Watch 146...

   Valid 250019Z - 250200Z

   CORRECTED FOR GRAPHIC ERROR

   The severe weather threat for Tornado Watch 146 continues.

   SUMMARY...Severe/tornado threat is increasing, particularly across
   northern parts of the watch in the short term.

   DISCUSSION...Storms have been slow to develop across the WW area,
   with entrainment issues apparent per visible satellite imagery. 
   However, robust storm development is now underway near the Red River
   west/northwest of Paris TX.  Here, a mesolow is analyzed in the
   Johnston County OK vicinity along the advancing surface front, with
   low-level flow backed across the valley area to the east. 

   Several deep/rotating updrafts are rapidly evolving in this area,
   with a tornado recently reported near Paris, along with 2" hail. 
   Very large hail is expected across northern parts of the watch over
   the next 1-2 hours, along with locally damaging winds and continued
   tornado potential, as these storms likely continue/spread
   east-southeastward with time.

   Other storm development is still expected southward -- both near and
   ahead of the front -- over the next hour or so, per consistent CAM
   guidance and persistent, congested cumulus per visible imagery. 
   All-hazard severe risk would exist with any storms which develop.

   ..Goss.. 04/25/2020

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

   ATTN...WFO...LZK...SHV...TSA...HGX...FWD...OUN...

   LAT...LON   33749596 34909554 34779352 34179301 32669311 31659424
               31409643 31969666 33749596