MESOSCALE DISCUSSION 2090
   NWS STORM PREDICTION CENTER NORMAN OK
   0650 AM CDT WED OCT 17 2007
   
   AREAS AFFECTED...CENTRAL/NRN PORTIONS TX PANHANDLE...CENTRAL/ERN
   PANHANDLE OF OK...PARTS OF SWRN/W-CENTRAL KS.
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 707...
   
   VALID 171150Z - 171330Z
   
   CORRECTED FOR GRAPHIC OUTLINE
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 707
   CONTINUES.
   
   HOWEVER...SVR POTENTIAL APPEARS TO BE DIMINISHING FROM W-E ACROSS
   NRN/WRN PORTIONS WW AREA.  SEVERAL SWRN KS COUNTIES HAVE BEEN
   CLEARED ALREADY...AND ADDITIONAL CLEARANCE AND/OR CANCELLATION MAY
   BE NEEDED BEFORE SCHEDULED 14Z EXPIRATION IF CURRENT TRENDS CONTINUE
   AND NO ADDITIONAL ACTIVITY DEVELOPS.
   
   LINE OF TSTMS WAS EVIDENT AT 1115Z FROM ROBERTS/OCHILTREE COUNTIES
   SWWD TO CARSON COUNTY...MOVING MOSTLY ENEWD INTO WW 706.  REF SPC
   MESOSCALE DISCUSSION 2089 FOR MORE DETAILS.  WHILE PORTIONS SWRN KS
   REMAIN FAVORABLY UNSTABLE ABOVE SFC TO SUPPORT STG-SVR
   CONVECTION...STRONGEST DEEP-LAYER ASCENT MAY BE BYPASSING THIS AREA
   TO THE S IN FORM OF DPVA AHEAD OF EJECTING NM TROUGH...AND TO THE E
   IN THE FORM OF LOW LEVEL WAA THAT IS CONTRIBUTING TO MAINTENANCE OF
   CENTRAL KS ACTIVITY.
   
   ..EDWARDS.. 10/17/2007
   
   
   ATTN...WFO...ICT...OUN...DDC...AMA...
   
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