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Mesoscale Discussion 363
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   MESOSCALE DISCUSSION 0363
   NWS STORM PREDICTION CENTER NORMAN OK
   0325 PM CDT WED APR 16 2014

   AREAS AFFECTED...E CENTRAL MN/NWRN WI

   CONCERNING...HEAVY SNOW 

   VALID 162025Z - 170030Z

   SUMMARY...HEAVY SNOW -- LOCALLY EXCEEDING AN INCH PER HOUR -- WILL
   CONTINUE OVER THE NEXT SEVERAL HOURS.

   DISCUSSION...LATEST WV IMAGERY SHOWS A STRONG CYCLONIC CIRCULATION
   CENTER CROSSING THE SUX /SIOUX CITY IA/ VICINITY ATTM...MOVING
   EWD/ENEWD WITH TIME.  AN ASSOCIATED SURFACE LOW IS ANALYZED JUST TO
   THE NE -- OVER FAR SWRN MN...WITH A WARM FRONT EXTENDING EWD ACROSS
   SRN MN INTO CENTRAL WI.  A ZONE OF STRONG QG ASCENT -- IN ADVANCE OF
   THE UPPER SYSTEM AND N OF THE SURFACE WARM FRONT -- IS SPREADING
   GRADUALLY EWD ACROSS THE UPPER MS VALLEY AREA...AND IS SUPPORTING AN
   ARCING BAND OF MODERATE TO HEAVY SNOWFALL FROM SWRN AND CENTRAL MN
   NEWD INTO NWRN WI PER LATEST RADAR LOOP.

   AS THE UPPER SYSTEM AND ASSOCIATED SURFACE LOW ADVANCE INTO THE
   EVENING HOURS...THE BAND OF HEAVY SNOW IS PROGGED TO
   PERSIST...SHIFTING GRADUALLY FROM W CENTRAL MN INTO NWRN WI AND THEN
   LATER INTO WRN UPPER MI.  SNOWFALL RATES LOCALLY IN EXCESS OF AN
   INCH PER HOUR ARE EXPECTED FOR SEVERAL HOURS...PARTICULARLY ACROSS
   THE NWRN WI VICINITY LATE THIS AFTERNOON INTO THIS EVENING.

   ..GOSS.. 04/16/2014


   ATTN...WFO...DLH...MPX...

   LAT...LON   45639232 45099378 45179441 45729434 46349332 46789214
               46949100 46359063 45789096 45639232 

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Page last modified: April 17, 2014
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