|Mesoscale Discussion 872|
< Previous MD Next MD >
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.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 37979188 37929098 37548950 37248936 36828946 36608977
36799089 37159209 37979188
Top/All Mesoscale Discussions/Forecast Products/Home