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Mesoscale Discussion 679
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   MESOSCALE DISCUSSION 0679
   NWS STORM PREDICTION CENTER NORMAN OK
   1134 PM CDT SAT MAY 16 2015

   AREAS AFFECTED...ERN OK

   CONCERNING...TORNADO WATCH 177...182...

   VALID 170434Z - 170600Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 177...182...CONTINUES.

   SUMMARY...LINE OF STRONG/SEVERE STORMS CONTINUES CROSSING ERN OK --
   I.E. AREAS WITHIN THE REMAINING SERN PORTION OF WW 177 AND INTO WW
   182.

   DISCUSSION...LATEST RADAR LOOP SHOWS A COMPLEX LINE OF STRONG/SEVERE
   STORMS CROSSING ERN OK ATTM...WITH BOWS AND CIRCULATIONS EMBEDDED
   WITHIN.  THE STORMS ARE MOVING THROUGH A MOIST/AMPLY UNSTABLE
   AIRMASS...WHERE INTENSE LOW-LEVEL SHEAR IS INDICATED BY AREA WSR-88D
   VWPS.  WHILE PRIMARY SEVERE RISK WILL LIKELY REMAIN IN THE FORM OF
   DAMAGING WINDS...EMBEDDED CIRCULATIONS WILL LIKELY PERSIST OVER THE
   NEXT SEVERAL HOURS WITHIN THE LINE GIVEN THE KINEMATIC
   ENVIRONMENT...AND THUS ISOLATED TORNADOES WILL REMAIN POSSIBLE AS
   WELL.

   GIVEN CURRENT ADVANCE OF THE LINE ACROSS NERN OK...A LOCAL EXTENSION
   OF THE WW INTO ADJACENT NWRN AR MAY BE NEEDED.

   ..GOSS.. 05/17/2015


   ATTN...WFO...SGF...TSA...ICT...FWD...OUN...

   LAT...LON   33919782 35079691 36999574 37139473 34729511 33779587
               33919782 

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Page last modified: May 17, 2015
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