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Mesoscale Discussion 25
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   MESOSCALE DISCUSSION 0025
   NWS STORM PREDICTION CENTER NORMAN OK
   0314 PM CST SAT JAN 11 2014

   AREAS AFFECTED...VA...NC

   CONCERNING...TORNADO WATCH 7...

   VALID 112114Z - 112215Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 7 CONTINUES.

   SUMMARY...STRONG TO SEVERE STORMS ARE TRACKING QUICKLY EAST ACROSS
   TORNADO WATCH 7 AT ABOUT 45-50KT. SEVERE WIND AND TORNADO/WATERSPOUT
   THREAT WILL SPREAD EAST OF THE MOUTH OF CHESAPEAKE BAY IN THE NEXT
   HOUR. TRAILING PORTIONS OF THE SQUALL LINE WILL TAKE A BIT LONGER TO
   CLEAR EXTREME NERN NC AND ALBEMARLE SOUND.

   DISCUSSION...NARROW CORRIDOR OF WARM AND SUFFICIENTLY UNSTABLE AIR
   IS NOW CONFINED TO ALMOST THE IMMEDIATE COASTAL/TIDEWATER AREAS
   AHEAD OF A POWERFUL UPPER TROUGH AND 110-115 KT MID-LEVEL JET WEST
   OF THE APPALACHIAN MOUNTAINS. PRE-FRONTAL SQUALL LINE INCREASED IN
   INTENSITY/VIGOR OVER NERN NC AND PARTS OF VA TIDEWATER AND AS LARGE
   SCALE ASCENT INTERACTED WITH THE SOMEWHAT GREATER INSTABILITY IN THE
   NARROW WARM SECTOR. AKQ VWP NOW SHOWS A SHARP WIND SHIFT WITH
   DEEP-LAYER WLY FLOW OF 50-60KT EVIDENT AND THIS SURGE WILL HELP
   SHIFT THE SQUALL LINE OFF THE VA CAPES IN THE NEXT HOUR OR SO.
   TRAILING PORTION OF THE CONVECTIVE LINE WILL TAKE A BIT LONGER TO
   CLEAR THE LAND AREA ACROSS NERN NC WHERE BOTH KINEMATIC AND
   THERMODYNAMIC ENVIRONMENT SHOULD CONTINUE TO SUPPORT BOTH DAMAGING
   WIND AND TORNADO THREATS FOR ANOTHER 1-2 HOURS.

   ..CARBIN.. 01/11/2014


   ATTN...WFO...AKQ...MHX...RAH...

   LAT...LON   37637708 37547548 36117585 35787675 35737730 35847770
               36477786 37637708 

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