MESOSCALE DISCUSSION 1740
   NWS STORM PREDICTION CENTER NORMAN OK
   0357 PM CDT SAT SEP 20 2014

   AREAS AFFECTED...MN AND EXTREME NERN SD

   CONCERNING...SEVERE THUNDERSTORM WATCH 503...

   VALID 202057Z - 202230Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 503
   CONTINUES.

   SUMMARY...THE THREAT FOR SEVERE STORMS WITH DAMAGING WIND GUSTS AND
   OCCASIONAL HAIL IS CONTINUING WITHIN WW 503 ACROSS PARTS OF
   MINNESOTA AND EXTREME NORTHEAST SOUTH DAKOTA.  THE PRIMARY RISK
   APPEARS TO BE OVER THE SOUTHERN PART OF THE WATCH OVER THE NEXT 1-2
   HRS.

   DISCUSSION...A LOW-TOPPED LINE OF STORMS FROM NORTH CENTRAL MN
   EXTENDING SWD INTO SWRN MN HAS BEEN MOVING EWD/SEWD AT 40-50
   KT...WITH EMBEDDED BOW ECHO STRUCTURES EVIDENT IN RADAR IMAGERY. 
   STRONGER STORMS ARE NOTED OVER STEARNS...KANDIYOHI AND CHIPPEWA
   CNTYS IN MN...WITH NEW DEVELOPMENT NOW EXTENDING SWD ACROSS RENVILLE
   CNTY.  SOME ROTATION HAS BEEN OBSERVED WITH THE STORM MOVING INTO
   KANDIYOHI CNTY SUGGESTING ENHANCED SEVERE POTENTIAL INCLUDING THE
   POSSIBILITY OF A BRIEF FUNNEL OR TORNADO.

   ..WEISS.. 09/20/2014


   ATTN...WFO...DLH...MPX...FGF...FSD...ABR...

   LAT...LON   45339678 45499602 45409549 46219498 47009458 47859474
               47779306 46059257 44559291 44199319 44139455 44389579
               45339678