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 130
< Previous MD         Next MD >
MD 130 graphic

   MESOSCALE DISCUSSION 0130
   NWS STORM PREDICTION CENTER NORMAN OK
   0518 PM CST TUE FEB 23 2016

   AREAS AFFECTED...PORTIONS OF SERN LA / SRN MS / SWRN AL

   CONCERNING...TORNADO WATCH 21...

   VALID 232318Z - 240115Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 21 CONTINUES.

   SUMMARY...STRONG TORNADOES WILL BE POSSIBLE OVER THE NEXT FEW HOURS
   ACROSS SERN LA/SRN MS AND MOVING INTO SWRN AL.

   DISCUSSION...VERY RAPID INCREASE IN LOW-LEVEL SHEAR AND THE
   ENLARGEMENT OF THE HODOGRAPH IS EVIDENT FROM KMOB VAD DATA DURING
   THE PAST 2 HOURS /300 M2 PER S2 TO 700 M2 PER S2 0-3 KM SRH/.  THIS
   INCREASE IN THE LOWER TROPOSPHERIC FLOW HAS BEEN COINCIDENT WITH 1-2
   MB PER HOUR PRESSURE FALLS ACROSS THE REGION AS STRONG MID-LEVEL
   DCVA OVERSPREADS THE MOISTENING/DESTABILIZING WARM SECTOR.  RECENT
   SUBJECTIVE SURFACE MESOANALYSIS ALSO PLACES A DUAL MESOLOW STRUCTURE
   WITH THE MORE INTENSE SEVERE STORM CLUSTERS ACROSS SRN MS AND SERN
   LA.  GIVEN THE AFOREMENTIONED FACTORS AND ADDITIONAL STRENGTHENING
   OF THE WIND PROFILE...EXPECTING A COUPLE OF TORNADOES OVER THE NEXT
   FEW HOURS DOWNSTREAM OF THE AREAS WITH ONGOING SUPERCELLS.  IF
   SEMI-DISCRETE UPDRAFTS CAN EVOLVE ON THE SRN PORTION OF THE LARGER
   CONVECTIVE COMPLEX...A HIGHER-END CORRIDOR OF POTENTIAL FOR A CYCLIC
   TORNADIC SUPERCELL CAPABLE OF SIGNIFICANT TORNADOES MAY OCCUR.

   ..SMITH.. 02/23/2016


   ATTN...WFO...BMX...MOB...JAN...LIX...

   LAT...LON   30249031 31578906 32238796 32278719 31808709 30388865
               30088965 30249031 

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: February 24, 2016
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities