Skip Navigation Links 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Mesoscale Discussion 872
< Previous MD         Next MD >
MD 872 graphic

   Mesoscale Discussion 0872
   NWS Storm Prediction Center Norman OK
   0424 PM CDT Sat May 27 2017

   Areas affected...southeastern MO

   Concerning...Tornado Watch 275...

   Valid 272124Z - 272230Z

   The severe weather threat for Tornado Watch 275 continues.

   SUMMARY...A high-end and intense bow echo will move across
   southeastern portions of MO and likely result in widespread 70-100
   mph gusts.  The area over far southeastern MO, far southern IL, and
   western KY is being considered for a Particularly Dangerous
   Situation Severe Thunderstorm/or Tornado Watch.

   DISCUSSION...Radar imagery shows a very intense and compact bow echo
   from 15 mi south-southeast VIH to 25 mi north-northeast UNO.  The
   environment is characterized as very unstable with around 3000 J/kg
   MLCAPE immediately ahead of the bow.  50-kt effective shear will
   support a a long-lived MCS as it moves around 55-kt to the east
   towards the MS-OH river confluence over the next few hours.  KSGF
   single site radar imagery showed a 80-95 kt rear inflow jet around
   9000 feet above radar level.  Expecting efficient downward momentum
   transport within the RIJ region of the bow with widespread gusts in
   the 70-100 mph range---resulting in extensive tree damage within the
   localized higher-end swaths.

   ..Smith.. 05/27/2017

   ...Please see for graphic product...


   LAT...LON   37979188 37929098 37548950 37248936 36828946 36608977
               36799089 37159209 37979188 

Top/All Mesoscale Discussions/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
Page last modified: May 27, 2017
Information Quality
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities