Mesoscale Discussion 0329
   NWS Storm Prediction Center Norman OK
   1109 PM CDT Wed May 02 2018

   Areas affected...Eastern OK

   Concerning...Tornado Watch 66...

   Valid 030409Z - 030545Z

   The severe weather threat for Tornado Watch 66 continues.

   SUMMARY...Threat for damaging wind gusts and tornadoes will continue
   across eastern OK as the convective line surges northeastward.

   DISCUSSION...Organized MCS continues to progress
   eastward/northeastward across eastern OK. Numerous strong to severe
   gusts have been reported with the northern portion of the line from
   SWO (51 kts) to OKM (38 kt) and RVS (48 kt). Given the orthogonal
   orientation of the line to the mean flow, expectation is for
   damaging wind gusts to continue as it progresses northeastward.
   Embedded mesovortices are also possible along the leading edge of
   any localized pockets of stronger outflow. Tornadoes are also
   possible near the book-end vortex at the far northern end of the
   MCS.

   Farther south (south-central/southeast OK), southern portion of the
   line has lagged behind the more progressive northern portion until
   recently with more forward-propagation noted over the last 15 mins.
   This increased forward motion was coincident with the line becoming
   more favorably oriented within the mean flow. Like areas farther
   north, damaging wind gusts and embedded tornadoes will remain
   possible as the line continues quickly northeastward.  

   Need for a downstream watch was addressed in MCD 327.

   ..Mosier.. 05/03/2018

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

   ATTN...WFO...SGF...SHV...TSA...ICT...FWD...OUN...

   LAT...LON   34479721 35289672 36679639 37049605 37129548 36989437
               36649428 34389490 33979573 33919742 34479721