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Mesoscale Discussion 208
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   MESOSCALE DISCUSSION 0208
   NWS STORM PREDICTION CENTER NORMAN OK
   0851 PM CDT SUN MAR 13 2016

   AREAS AFFECTED...NORTH-CENTRAL TO NORTHEAST LA AND PART OF WESTERN
   MS

   CONCERNING...TORNADO WATCH 43...

   VALID 140151Z - 140315Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 43 CONTINUES.

   SUMMARY...ONE OR TWO ROWS OF PARISHES IN LOUISIANA AND COUNTIES IN
   WEST-CENTRAL MS LOCATED IMMEDIATELY SOUTH THROUGH SOUTHEAST OF WW 43
   MAY NEED TO BE ADDED TO THIS TORNADO WATCH.  TRENDS WILL BE
   MONITORED THAT COULD RESULT IN A LOCAL WFO AREAL WATCH EXTENSION.

   DISCUSSION...EARLY EVENING TRENDS IN CLOUD TOP COOLING...LIGHTNING
   DATA AND MOSAIC RADAR IMAGERY INDICATED STORMS HAD DEVELOPED AND
   INCREASED IN INTENSITY INTO NORTHERN LA.  IT APPEARS THE SOUTHERN
   EXTENT OF GREATER HEIGHT FALLS AND DCVA ATTENDANT TO THE COMPACT
   CLOSED LOW/SHORTWAVE TROUGH MOVING THROUGH AR THIS EVENING ARE
   AIDING THE STORM DEVELOPMENT WITHIN AND SOUTH OF THE SOUTHERN
   PORTION OF WW 43.  THE FORT POLK LA AND JACKSON MS VWP DATA SHOWED
   FAVORABLE LOW-LEVEL DIRECTIONAL SHEAR COMBINED WITH THE
   STRENGTHENING BULK SHEAR FOR SUSTAINED ROTATING UPDRAFTS.  IF STORMS
   IN THE EASTERN PART OF WFO-SHV COUNTY WARNING AREA /JACKSON TO
   NATCHITOCHES PARISHES/ MAINTAIN SUSTENANCE AND HAVE INCREASED
   FURTHER IN INTENSITY...THEN A FEW PARISHES AND COUNTIES MAY NEED TO
   BE ADDED IMMEDIATELY TO THE SOUTH AND SOUTHEAST OF WW 43 IN
   NORTHEAST LA AND WEST-CENTRAL MS.

   ..PETERS.. 03/14/2016


   ATTN...WFO...JAN...SHV...

   LAT...LON   32119283 32539257 32679128 32929051 32849018 32329058
               32039112 32009196 32119283 

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Page last modified: March 14, 2016
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