THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF EASTERN NORTH CAROLINA SOUTHEASTERN VIRGINIA COASTAL WATERS * EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 540 AM UNTIL 100 PM EDT. * PRIMARY THREATS INCLUDE... SEVERAL TORNADOES POSSIBLE SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES EAST NORTHEAST OF NORFOLK VIRGINIA TO 20 MILES SOUTH SOUTHEAST OF JACKSONVILLE NORTH CAROLINA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. && DISCUSSION...STRENGTHENING LOW-LEVEL SHEAR ON THE SOUTHERN FRINGE OF AN INITIAL CLUSTER OF STORMS DEVELOPING NORTHEASTWARD ACROSS EASTERN NORTH CAROLINA...COUPLED WITH INLAND DESTABILIZATION...IS BEGINNING TO SUPPORT SUSTAINED LOW-LEVEL MESOCYCLONES WITH CELLS OVER INLAND AREAS. THIS ACTIVITY PROBABLY WILL SPREAD ACROSS THE REMAINDER OF EASTERN NORTH CAROLINA AND THE OUTER BANKS EARLY THIS MORNING WITH THE RISK FOR ADDITIONAL TORNADOES. AT THE SAME TIME...AFTER DAYBREAK...SURFACE HEATING OF THE MOIST BOUNDARY LAYER IN THE WAKE OF THIS ACTIVITY WILL CONTRIBUTE TO SUFFICIENT DESTABILIZATION FOR ADDITIONAL DISCRETE STORMS AHEAD OF THE REMNANTS OF ANDREA AS IT ACCELERATES NORTHEASTWARD TOWARD THE MID ATLANTIC COAST. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION VECTOR 19035. ...KERR
Posted on: Fri, 07 Jun 2013 09:45:49 +0000
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