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 127
< Previous MD         Next MD >
MD 127 graphic

   MESOSCALE DISCUSSION 0127
   NWS STORM PREDICTION CENTER NORMAN OK
   0555 PM CST THU FEB 20 2014

   AREAS AFFECTED...MUCH OF CENTRAL AND SRN MS/PARTS OF ERN AND SERN
   LA/WRN AL

   CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY 

   VALID 202355Z - 210030Z

   PROBABILITY OF WATCH ISSUANCE...95 PERCENT

   SUMMARY...A NEW TORNADO WATCH IS BEING COORDINATED FOR THE LOWER MS
   VALLEY AND PART OF THE CENTRAL GULF COAST STATES FROM PARTS OF
   ERN/SERN LA INTO MUCH OF CENTRAL AND SRN MS TO WRN AL.  IN ADDITION
   TO A TORNADO THREAT...DAMAGING WINDS WILL BE POSSIBLE AS WELL.

   DISCUSSION...TRENDS IN REGIONAL RADAR IMAGERY THROUGH 2345Z SHOWED
   CLUSTERS OF TSTMS...SOME POTENTIALLY STRONG TO SEVERE...DEVELOPING
   OVER SERN MS WSWWD TO EITHER SIDE OF THE SRN MS/SERN LA
   BORDER...WHILE A PRE-COLD FRONT BROKEN BAND OF STORMS CONTINUED FROM
   NWRN MS THROUGH NERN LA TO FAR SERN TX.  THE AFOREMENTIONED CLUSTERS
   OF STORMS ARE BEING AIDED BY PREDOMINATELY BY LOW LEVEL WAA AHEAD OF
   THE COLD FRONT AND CURRENTLY BEING GLANCED BY FORCING ALOFT AS THE
   MS VALLEY UPPER TROUGH ADVANCE.  A SHORTWAVE TROUGH MOVING ESEWD
   INTO THE BASE OF THE MS VALLEY TROUGH FROM THE SRN PLAINS THIS
   EVENING WILL RESULT IN AN INCREASE IN DEEP LAYER ASCENT INTO THE
   LOWER MS VALLEY/CENTRAL GULF COAST STATES...SUPPORTING ADDITIONAL
   TSTM DEVELOPMENT. 

   LOW LEVEL AND DEEP LAYER SHEAR IS ALREADY SUPPORTIVE AND IS EXPECTED
   TO REMAIN SO THROUGH THE EVENING AS DEEP LAYER WINDS STRENGTHEN...
   ESPECIALLY INTO THE LOWER MS VALLEY.  00Z SOUNDING AT JAN SHOWED AN
   EARLIER CAP NO LONGER EXISTED...AND IS SUPPORTIVE FOR ADDITIONAL
   TSTM DEVELOPMENT.  LOW LEVEL SHEAR PER 00Z JAN SOUNDING WAS ALREADY
   SUPPORTIVE FOR ORGANIZED STORMS...WITH SUPERCELLS AND AN ATTENDANT
   TORNADO POTENTIAL.

   ..PETERS/CORFIDI.. 02/20/2014


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

   LAT...LON   30349377 31769254 33329070 34988906 35008718 34978669
               34088675 32798732 31428812 30538924 30319048 30049121
               29879196 30349377 

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 21, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities