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 450
< Previous MD         Next MD >
MD 450 graphic

   MESOSCALE DISCUSSION 0450
   NWS STORM PREDICTION CENTER NORMAN OK
   0953 AM CDT MON APR 28 2014

   AREAS AFFECTED...NE LA...MS...NW AL...FAR SE AR

   CONCERNING...TORNADO WATCH 107...

   VALID 281453Z - 281630Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 107 CONTINUES.

   SUMMARY...AN ISOLATED SEVERE THREAT IS EXPECTED TO CONTINUE ACROSS
   THE NERN PART OF WW 107 LATE THIS MORNING. THE SEVERE THREAT MAY
   MOVE INTO NCNTRL MS AND FAR NWRN AL. WIND DAMAGE AND HAIL SHOULD BE
   THE PRIMARY THREATS BUT A TORNADO CAN NOT BE RULED OUT.

   DISCUSSION...A CLUSTER OF STRONG THUNDERSTORMS WITH ISOLATED
   SEVERE...IS ONGOING FROM NEAR THE MS RIVER IN NE LA EXTENDING NEWD
   ACROSS WRN AND NRN MS. THIS ACTIVITY IS LOCATED ALONG AN AXIS OF
   MODERATE INSTABILITY WHERE MLCAPE VALUES ARE ESTIMATED TO BE IN THE
   1500 TO 2000 J/KG RANGE. IN ADDITION...REGIONAL WSR-88D VWPS SHOW
   0-6 KM SHEAR IN THE 60 TO 70 KT RANGE. THIS COMBINED WITH THE
   MODERATE INSTABILITY AND STRONG LOW-LEVEL FLOW ASSOCIATED WITH A 50
   TO 60 KT JET MAX NEAR 850 MB SHOULD BE SUFFICIENT FOR A SEVERE
   THREAT LATE THIS MORNING. AS LOW-LEVEL LAPSE RATES GRADUALLY
   STEEPEN...A WIND DAMAGE THREAT MAY CONTINUE WITH CELLS MOVING INTO
   NCNTRL MS. ALSO...850 TO 500 MB LAPSE RATES OF GREATER THAN 7.5 C/KM
   SHOULD BE SUFFICIENT FOR HAIL.

   ..BROYLES/THOMPSON.. 04/28/2014


   ATTN...WFO...BMX...HUN...MEG...JAN...LIX...LCH...SHV...

   LAT...LON   31089096 31349236 31829312 32709241 34398937 34608809
               34148746 33238764 31439014 31089096 

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 28, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities