Mesoscale Discussion 2217
   NWS Storm Prediction Center Norman OK
   0620 PM CST Mon Dec 16 2019

   Areas affected...southeast Mississippi

   Concerning...Tornado Watch 701...

   Valid 170020Z - 170045Z

   The severe weather threat for Tornado Watch 701 continues.

   SUMMARY...Based on recent radar and environmental data, a strong to
   potentially intense tornado with potential peak winds of 120 to 155
   mph (EF2-EF3) is likely ongoing. This storm has a history of
   producing tornadoes.

   DISCUSSION...An intense supercell will continue to move through a
   favorable environment over southeast Mississippi, characterized by
   0-1 km SRH around 300 m2/s2 and MLCAPE near 1200 J/kg per recent
   mesoanalysis. Recent radar signatures from KDGX as of 0017 UTC
   reveal an intense supercell characterized by a 0.3 degree rotational
   velocity between 55 and 60 kt. A tornadic debris signature has also
   been noted on recent radar scans. These signatures are occurring in
   an environment characterized by STP between 3 and 4. Previous
   signatures within similar environments produced
   tornado-damage-estimated wind speeds from 120 to 155 mph and
   confidence is high for likely strong to potentially intense tornado.
   A tornado is ongoing and may continue based on the rotational
   velocity continuity and the storm moving within a favorable
   downstream environment.

   ..Nauslar/Thompson.. 12/17/2019

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

   ATTN...WFO...MOB...JAN...

   LAT...LON   31748870 31668898 31778914 31958915 32158889 32228866
               32038851 31898853 31748870