Storm Prediction Center Mesoscale Discussion 658

   Mesoscale Discussion 0658
   NWS Storm Prediction Center Norman OK
   0527 PM CDT Mon May 06 2024

   Areas affected...Southeastern Nebraska

   Concerning...Tornado Watch 187...190...

   Valid 062227Z - 070000Z

   The severe weather threat for Tornado Watch 187, 190 continues.

   SUMMARY...A line segment in southeast Nebraska will continue to move
   into a destabilizing environment this evening with aid from
   mid-level ascent. Severe winds and QLCS circulations/tornadoes will
   be possible.

   DISCUSSION...A more organized line of storms has developed in
   south-central Nebraska. Though buoyancy has been limited by cloud
   cover, regional surface observations show dewpoints reaching the low
   60s F ahead of this line. This moisture advection should continue
   this evening. Objective mesoanalysis shows 1000 J/kg MLCAPE in far
   southeast Nebraska currently. This line of storms will be capable of
   severe wind gusts and is expected to persist as continued mid-level
   ascent pushes into central/eastern Nebraska this evening. QLCS
   circulations/tornadoes are also possible. KUEX has showed occasional
   low-level velocity couplets over the last hour. The northward extent
   of the threat is a bit uncertain as destabilization becomes less
   likely farther north.

   ..Wendt.. 05/06/2024

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

   ATTN...WFO...OAX...TOP...GID...

   LAT...LON   41299830 41509822 41769689 41559632 41259616 40759593
               40289604 40029683 39979781 39929827 41299830