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 346
< Previous MD         Next MD >
MD 346 graphic

   MESOSCALE DISCUSSION 0346
   NWS STORM PREDICTION CENTER NORMAN OK
   1033 PM CDT SUN APR 13 2014

   AREAS AFFECTED...ARKLATEX INTO ECNTRL AR

   CONCERNING...SEVERE THUNDERSTORM WATCH 77...

   VALID 140333Z - 140430Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 77
   CONTINUES.

   SUMMARY...NEW WW MAY BE ISSUED TO MORE ACCURATELY REFLECT ONGOING
   SEVERE THREAT.  ORGANIZED CONVECTIVE RISK EXTENDS PRIMARILY FROM
   NERN TX INTO ECNTRL AR.

   DISCUSSION...FRONTAL SQUALL LINE REMAINS FAIRLY ACTIVE ACROSS
   CNTRL/SERN AR INTO RED RIVER REGION OF NERN TX.  THIS MCS IS
   EXPECTED TO ADVANCE STEADILY EWD ACROSS THE REMAINDER OF WW77
   EXITING ERN EDGES OF WATCH IN THE NEXT HOUR OR SO.  03Z SOUNDING
   FROM LZK EXHIBITS SUFFICIENT INSTABILITY...ROUGHLY 1100 J/KG
   SBCAPE...FOR ORGANIZED SQUALL LINE TO ADVANCE TOWARD THE MS DELTA
   REGION OF ERN AR.  WITH 50KT FLOW ABOUT 1KM OFF THE SFC THERE IS
   CONCERN THAT DAMAGING WINDS MAY ACCOMPANY STRONGER LINE SEGMENTS. 
   WHILE IT/S NOT CLEAR HOW FAR DOWNSTREAM THIS ORGANIZED SQUALL LINE
   WILL REMAIN SEVERE...NEW WW MAY BE WARRANTED TO ACCOUNT FOR THIS
   THREAT...AT LEAST TO NEAR THE MS RIVER.  SOUTH OF I-20 CONCENTRATION
   OF TSTMS SHOULD REMAIN QUITE ISOLATED.

   ..DARROW.. 04/14/2014


   ATTN...WFO...MEG...JAN...LZK...SHV...TSA...OUN...

   LAT...LON   33939609 35709527 35699205 35789200 35748922 33029142
               33029431 33949356 33939609 

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 14, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities