

109 

WWUS20 KWNS 280841

SEL3

SPC WW 280841

CTZ000-NJZ000-NYZ000-RIZ000-CWZ000-281500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 813

NWS STORM PREDICTION CENTER NORMAN OK

440 AM EDT SUN AUG 28 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN CONNECTICUT

       EXTREME NORTHEASTERN NEW JERSEY

       EXTREME SOUTHEASTERN NEW YORK AND LONG ISLAND

       SOUTHERN RHODE ISLAND

       COASTAL WATERS



EFFECTIVE THIS SUNDAY MORNING FROM 440 AM UNTIL 1100 AM EDT.



TORNADOES...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS

LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 40 STATUTE

MILES EITHER SIDE OF A LINE FROM 25 MILES NORTHWEST OF NEW YORK

CITY NEW YORK TO 25 MILES EAST NORTHEAST OF BLOCK ISLAND RHODE

ISLAND.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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.



OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 812. WATCH NUMBER 812 WILL NOT BE IN EFFECT AFTER

440 AM EDT.



DISCUSSION...MRGL TORNADO POTENTIAL IS FCST TO SHIFT NEWD ACROSS WW

AREA IN STEP WITH TRANSLATION OF FAVORABLE SECTOR OF HURRICANE

IRENE...ASSOCIATED WITH CELLS EMBEDDED IN MIDDLE-OUTER CONVECTIVE

BANDS AND MOVING NWWD/ONSHORE.  AMIDST WIDESPREAD FAVORABLE

LOW-LEVEL HODOGRAPHS...AIR MASS WILL STABILIZE SUBSTANTIALLY WITH

INLAND EXTENT...REDUCING TORNADO THREAT WITH DISTANCE AWAY FROM

COAST AS PER SPC MESOSCALE DISCUSSION 2073.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME

TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI

WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 13045.





...EDWARDS

