Skip Navigation Links weather.gov 
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


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Mesoscale Discussion 1564
< Previous MD         Next MD >
MD 1564 graphic

   MESOSCALE DISCUSSION 1564
   NWS STORM PREDICTION CENTER NORMAN OK
   0509 PM CDT SUN AUG 17 2014

   AREAS AFFECTED...CNTRL NEB...WRN SD

   CONCERNING...SEVERE THUNDERSTORM WATCH 462...

   VALID 172209Z - 172345Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 462
   CONTINUES.

   SUMMARY...GREATEST SEVERE WIND RISK WILL EXIST ACROSS CNTRL NEB IN
   ASSOCIATION WITH A SUPERCELL CLUSTER THAT SHOULD EVOLVE INTO A BOW
   AS IT ACCELERATES SEWD. ADDITIONAL STORMS OVER WRN SD WILL POSE A
   CONTINUED ISOLATED SEVERE HAIL/WIND THREAT.

   DISCUSSION...INTENSE STORM CLUSTER CENTERED OVER PARTS OF
   CHERRY...THOMAS...BLAINE...AND BROWN COUNTIES IN N-CNTRL NEB HAS HAD
   A PERSISTENT SEVERE WIND SIGNATURE WITH A RELATIVELY LARGE SWATH OF
   VELOCITIES AOA 60 KT AOB 1000 FT AGL PER KLNX. WITH THIS CLUSTER
   INGESTING A LARGE DEGREE OF BUOYANCY WITHIN A STEEP LAPSE RATE
   ENVIRONMENT...EVOLUTION INTO A SMALL BOW APPEARS PROBABLE. CONTINUED
   DEEPENING OF THE SURFACE COLD POOL WITHIN BROADER MEAN MID-LEVEL
   WLYS ATOP SURFACE E/SELYS SHOULD FORCE ACCELERATION OF THE CLUSTER
   TO THE SE WITH A POTENTIAL SWATH OF SEVERE WIND GUSTS AND
   WIND-DRIVEN HAIL TOWARDS THE I-80 CORRIDOR.

   FARTHER N IN WRN SD...BUOYANCY IS WEAKER...BUT SUFFICIENT DEEP-LAYER
   SHEAR WILL PERSIST FOR ISOLATED SEVERE HAIL/WIND AS CONVECTION AS
   CLUSTERS EVOLVE EWD.

   ..GRAMS.. 08/17/2014


   ATTN...WFO...OAX...ABR...GID...LBF...UNR...CYS...

   LAT...LON   45700304 45690158 43339994 42159855 41749800 41189758
               40839725 40639734 40419791 40339874 40649997 41500096
               42160175 43190304 43860335 45090379 45620341 45660315
               45700304 

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.
spc.feedback@noaa.gov
Page last modified: August 17, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities