

450 

WWUS20 KWNS 060608

SEL0

SPC WW 060608

INZ000-NYZ000-OHZ000-PAZ000-WVZ000-LEZ000-061300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 270

NWS STORM PREDICTION CENTER NORMAN OK

205 AM EDT SUN JUN 6 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHEASTERN INDIANA

       SOUTHWESTERN NEW YORK

       MUCH OF OHIO

       WESTERN PENNSYLVANIA

       THE NORTHERN PANHANDLE OF WEST VIRGINIA

       LAKE ERIE



EFFECTIVE THIS SUNDAY MORNING FROM 205 AM UNTIL 900 AM EDT.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST OF DAYTON

OHIO TO 20 MILES EAST SOUTHEAST OF BRADFORD PENNSYLVANIA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).



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...CONTINUE...WW 267...WW 268...



DISCUSSION...SEMI-DISCRETE SUPERCELLS EXPECTED TO PERSIST THROUGH

LATER THIS MORNING OVER PARTS OF THE UPR OH VLY AND LWR GRT LKS AS

SEASONABLY STRONG WIND FIELD/UPR IMPULSE TRACK E ACROSS REGION.

STORMS SHOULD FOCUS BOTH ALONG WARM FRONT NEAR LK ERIE/NW PA/SW

NY...AND ALONG TRAILING COLD FRONT/PREFRONTAL WIND SHIFT NOW IN NW

OH/ERN IND.  STRENGTH OF SHEAR...QUALITY OF MOISTURE INFLOW...AND

CONVERGENCE NEAR DEEPENING SFC LOW SUGGEST POTENTIAL FOR TORNADOES

...DESPITE TIME OF DAY.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.

MEAN STORM MOTION VECTOR 27045.





...CORFIDI



190 

WWUS20 KWNS 060608

SEL0

SPC WW 060608

INZ000-NYZ000-OHZ000-PAZ000-WVZ000-LEZ000-061300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 270...RESENT

NWS STORM PREDICTION CENTER NORMAN OK

205 AM EDT SUN JUN 6 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHEASTERN INDIANA

       SOUTHWESTERN NEW YORK

       MUCH OF OHIO

       WESTERN PENNSYLVANIA

       THE NORTHERN PANHANDLE OF WEST VIRGINIA

       LAKE ERIE



EFFECTIVE THIS SUNDAY MORNING FROM 205 AM UNTIL 900 AM EDT.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST OF DAYTON

OHIO TO 20 MILES EAST SOUTHEAST OF BRADFORD PENNSYLVANIA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).



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...CONTINUE...WW 267...WW 268...



DISCUSSION...SEMI-DISCRETE SUPERCELLS EXPECTED TO PERSIST THROUGH

LATER THIS MORNING OVER PARTS OF THE UPR OH VLY AND LWR GRT LKS AS

SEASONABLY STRONG WIND FIELD/UPR IMPULSE TRACK E ACROSS REGION.

STORMS SHOULD FOCUS BOTH ALONG WARM FRONT NEAR LK ERIE/NW PA/SW

NY...AND ALONG TRAILING COLD FRONT/PREFRONTAL WIND SHIFT NOW IN NW

OH/ERN IND.  STRENGTH OF SHEAR...QUALITY OF MOISTURE INFLOW...AND

CONVERGENCE NEAR DEEPENING SFC LOW SUGGEST POTENTIAL FOR TORNADOES

...DESPITE TIME OF DAY.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.

MEAN STORM MOTION VECTOR 27045.





...CORFIDI

