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 513
< Previous MD         Next MD >
MD 513 graphic

   MESOSCALE DISCUSSION 0513
   NWS STORM PREDICTION CENTER NORMAN OK
   1022 AM CDT SAT APR 30 2016

   AREAS AFFECTED...SRN LA

   CONCERNING...SEVERE THUNDERSTORM WATCH 129...130...

   VALID 301522Z - 301615Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   129...130...CONTINUES.

   SUMMARY...THREAT FOR A FEW INSTANCES OF STRONG TO DAMAGING WIND
   GUSTS...HAIL AND A TORNADO OR TWO WILL PERSIST INTO EARLY AFTERNOON
   OVER SCNTRL AND SERN LA. SEVERE THUNDERSTORM WATCHES 129 AND 130 ARE
   SCHEDULED TO EXPIRE AT 16Z. SEVERE THUNDERSTORM WATCH 129 COULD BE
   LOCALLY EXTENDED IF NECESSARY FOR A PORTION OF SCNTRL LA. ANOTHER WW
   DOWNSTREAM OVER SERN LA MIGHT BE NEEDED LATER THIS MORNING OR
   AFTERNOON...BUT WILL ULTIMATELY DEPEND ON CONVECTIVE TRENDS.

   DISCUSSION...LINE OF STRONG TO OCCASIONALLY SEVERE STORMS PERSISTS
   ACROSS SCNTRL LA AND IS MOVING ONLY SLOWLY EWD AT 20 KT. A FEW
   BOWING SEGMENTS AND MESO-VORTICES CONTINUE TO BE OBSERVED WITHIN THE
   LINE. ACTIVITY IS EMBEDDED WITHIN A MODERATELY UNSTABLE ENVIRONMENT
   WITH MLCAPE AROUND 1500 J/KG AND FURTHER DESTABILIZATION OF THE
   BOUNDARY LAYER WILL OCCUR OVER SERN LA TODAY. TENDENCY WILL BE FOR
   LOW-LEVEL WINDS AND 0-1 KM HODOGRAPH SIZE TO SLOWLY DECREASE DURING
   THE DAY...BUT VERTICAL SHEAR THROUGH A DEEPER LAYER WILL REMAIN
   SUFFICIENT FOR ORGANIZED STORM STRUCTURES.

   ..DIAL/THOMPSON.. 04/30/2016


   ATTN...WFO...LIX...LCH...

   LAT...LON   29499126 29629188 29609306 29509364 29399429 29789397
               30479312 30909137 30809064 30139014 29259068 29499126 

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: April 30, 2016
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities