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 993
< Previous MD         Next MD >
MD 993 graphic

   MESOSCALE DISCUSSION 0993
   NWS STORM PREDICTION CENTER NORMAN OK
   0539 PM CDT FRI JUN 12 2015

   AREAS AFFECTED...SRN TX PANHANDLE...TX S PLAINS...SW TX

   CONCERNING...TORNADO WATCH 293...

   VALID 122239Z - 130015Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 293 CONTINUES.

   SUMMARY...THREAT FOR VERY LARGE HAIL /GREATER THAN 2 INCH IN
   DIAMETER/...DAMAGING WINDS...AND A TORNADO OR TWO CONTINUES ACROSS
   ALL OF TORNADO WATCH 293.

   DISCUSSION...REGIONAL RADAR IMAGERY SHOWS NUMEROUS SUPERCELLS
   ONGOING ACROSS THE WATCH AREA. SURFACE CONDITIONS ACROSS THE REGION
   ARE CHARACTERIZED BY TEMPERATURES IN THE MID 80S TO LOW 90S AND
   DEWPOINTS IN THE LOW TO MID 60S. THESE SURFACE CONDITIONS BENEATH
   STEEP MID-LEVEL LAPSE RATES ARE RESULTING IN MLCAPE AROUND 1500 TO
   2000 J PER KG DOWNSTREAM OF THE ONGOING STORMS. GIVEN THIS
   DOWNSTREAM INSTABILITY IN TANDEM WITH A FAVORABLE TIME OF
   DAY...NUMEROUS OUTFLOW BOUNDARIES AND A FAVORABLE KINEMATIC
   ENVIRONMENT /LBB AND MID VAD PROFILES SAMPLED 42 AND 36 KT OF 0-6 KM
   BULK SHEAR/...THE ONGOING ACTIVITY IS EXPECTED TO PERSIST FOR AT
   LEAST THE NEXT FEW HOURS. BASED ON RECENT TRENDS...ANY STORM
   DISSIPATION WILL LIKELY BE THE RESULT OF STORM INTERACTIONS/MERGERS.
   GIVEN THE STORMS PROXIMITY TO ONE ANOTHER...SOME UPSCALE GROWTH IS
   PROBABLE AS COLD POOLS AMALGAMATE. THIS APPEARS TO HAVE OCCURRED
   RECENTLY OVER LAMB CO TX. THE PRIMARY RESULT OF THIS UPSCALE GROWTH
   IS A LESSENED TORNADO RISK. THAT BEING SAID...THE ENVIRONMENT IS
   EXPECTED TO REMAIN SUPPORTIVE OF SUPERCELLS AND A RESULTING RISK FOR
   ALL SEVERE HAZARDS.

   ..MOSIER.. 06/12/2015


   ATTN...WFO...SJT...LUB...AMA...MAF...

   LAT...LON   30260401 35020242 35030013 30260182 30260401 

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: June 13, 2015
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities