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Mesoscale Discussion 149
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   MESOSCALE DISCUSSION 0149
   NWS STORM PREDICTION CENTER NORMAN OK
   0206 PM CST WED FEB 24 2016

   AREAS AFFECTED...PORTIONS OF NORTHERN VA/DC METRO AND
   MD/DE/NJ/SOUTHEAST PA

   CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY 

   VALID 242006Z - 242100Z

   PROBABILITY OF WATCH ISSUANCE...95 PERCENT

   SUMMARY...UPDATING AN EARLIER MESOSCALE DISCUSSION /145/...A TORNADO
   WATCH WILL BE ISSUED SOON ACROSS NORTHERN VA/DC METRO AND PORTIONS
   OF MD/DE INTO NJ/SOUTHEAST PA. THE TORNADO RISK WILL CONTINUE WILL
   GRADUALLY INCREASE/SPREAD NORTH-NORTHEASTWARD ACROSS THE REGION
   THROUGH LATE AFTERNOON/EARLY EVENING.

   DISCUSSION...THE NEAR-SURFACE FRONTAL WEDGE CONTINUES TO ABATE/SHIFT
   NORTHWARD THIS AFTERNOON...WITH A WARM FRONT EFFECTIVELY EXTENDING
   FROM THE DELMARVA PENINSULA SOUTHWESTWARD TO SOUTH-CENTRAL VA. AS
   ADDITIONAL DESTABILIZATION OCCURS WITHIN A HIGHLY SHEARED
   ENVIRONMENT...THE POTENTIAL FOR TORNADOES WILL INCREASE/SPREAD
   NORTH-NORTHEASTWARD THROUGH LATE AFTERNOON/EARLY EVENING. THIS
   INCLUDES THE POSSIBILITY OF A STRONG TORNADO OR TWO ESPECIALLY
   ACROSS VA AND POSSIBLY INTERIOR MD PORTIONS OF THE WATCH.

   ..GUYER/GRAMS.. 02/24/2016


   ATTN...WFO...PHI...AKQ...CTP...LWX...

   LAT...LON   38157857 39497736 40587563 40027399 38427505 38027622
               38307730 38157857 

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Page last modified: February 24, 2016
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