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Mesoscale Discussion 465
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   MESOSCALE DISCUSSION 0465
   NWS STORM PREDICTION CENTER NORMAN OK
   0632 PM CDT TUE APR 26 2016

   AREAS AFFECTED...PORTIONS OF CNTRL/ERN KS AND SRN NEB

   CONCERNING...TORNADO WATCH 108...

   VALID 262332Z - 270030Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 108 CONTINUES.

   SUMMARY...A THREAT FOR VERY LARGE HAIL...DAMAGING WINDS...AND
   ISOLATED TORNADOES CONTINUES ACROSS WW 108.

   DISCUSSION...23Z OBJECTIVE ANALYSIS DEPICTS A 996 MB SFC LOW OVER
   CNTRL KS...WITH A COMPOSITE DRYLINE/COLD FRONT EXTENDING SWD ACROSS
   S-CNTRL KS INTO NWRN OK. THUNDERSTORMS ACROSS THE MCD AREA HAVE HAD
   A TENDENCY TO GROW UPSCALE INTO SHORT CLUSTERS/LINE SEGMENTS OVER
   THE PAST SEVERAL HOURS. THIS IS LIKELY DUE TO A VEER-BACK SIGNATURE
   PRESENT IN THE VWP AT LOW TO MID LEVELS FROM KICT. REGARDLESS...
   STRONG INSTABILITY REMAINS PRESENT ACROSS PORTIONS OF THE WATCH
   AREA. WITH EFFECTIVE BULK SHEAR VALUES AND STEEP MID-LEVEL LAPSE
   RATES MORE THAN SUFFICIENT TO SUPPORT SUPERCELL STRUCTURES EMBEDDED
   WITHIN THE ONGOING LINE SEGMENTS...THE THREAT FOR VERY LARGE HAIL
   AND DAMAGING WINDS CONTINUES. AN ISOLATED TORNADO THREAT ALSO
   REMAINS ALONG AND S OF AN OUTFLOW BOUNDARY FROM EARLIER CONVECTION
   THAT IS LOCATED OVER NERN KS...AS EFFECTIVE SRH AROUND 200-250 M2/S2
   IS PRESENT ACROSS THE MCD AREA. HOWEVER...ONGOING UNFAVORABLE
   CONVECTIVE MODES MAY TEMPER THE TORNADO THREAT SOMEWHAT.

   ..GLEASON.. 04/26/2016


   ATTN...WFO...SGF...EAX...OAX...TOP...ICT...GID...DDC...GLD...

   LAT...LON   37629503 37029502 37039838 39119853 39119961 40029960
               40029920 40659918 40709872 40709874 40709695 40519607
               40049596 40039575 39679574 39659551 39439554 39429514
               39019514 38989501 37629503 

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Page last modified: April 27, 2016
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