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Mesoscale Discussion 1613
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   MESOSCALE DISCUSSION 1613
   NWS STORM PREDICTION CENTER NORMAN OK
   0617 AM CDT MON AUG 25 2014

   AREAS AFFECTED...SERN WI

   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 

   VALID 251117Z - 251245Z

   PROBABILITY OF WATCH ISSUANCE...20 PERCENT

   SUMMARY...STRONG WIND GUSTS MAY PRODUCE LOCALIZED DAMAGING WINDS FOR
   A FEW MORE HOURS WITH STORM CLUSTERS PROGRESSING E/NE FROM SW WI/FAR
   NE IA.

   DISCUSSION...MERGING CLUSTERS HAVE SUPPORTED AN INCREASE IN FORWARD
   SPEED AND BULGING REFLECTIVITY STRUCTURE FROM JUNEAU TO IOWA COUNTY
   WI. THIS HAS ENHANCED DOWNDRAFT MOMENTUM AND YIELDED A STRONG WIND
   GUST MEASURED AT KLNR OF 44 KT. ALTHOUGH SCATTERERS ARE FEW AND FAR
   BETWEEN IN DVN/MKX VWP DATA...LSE SAMPLED 50 KT WLYS FROM 3-6 KM AGL
   IN THE WAKE OF THE CLUSTER. THIS SHOULD HELP MAINTAIN FORWARD
   MOMENTUM AS THE LEADING EDGE OF THE CLUSTER PROGRESSES ACROSS THE
   NRN PERIPHERY OF AN AIR MASS THAT HAS YET NOT BEEN OVERTURNED THIS
   MORNING...CHARACTERIZED BY MIDDLE TO UPPER 70S SURFACE TEMPERATURES
   AND 72-76 DEG F DEW POINTS. THIS MAY YIELD A BIT LONGER DURATION OF
   STRONG GUST POTENTIAL FARTHER E TOWARDS LK MICHIGAN...COMPARED TO
   THE RAPID DEMISE OF AN EARLIER CLUSTER NEAR KGRB.

   ..GRAMS/CORFIDI.. 08/25/2014


   ATTN...WFO...GRB...LOT...MKX...DVN...ARX...

   LAT...LON   43858983 44078892 44138838 43948802 43648790 43178783
               42868784 42588818 42488907 42408989 42549020 42819001
               43128987 43368973 43858983 

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Page last modified: August 25, 2014
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