Tornado Watch 411

Issued

Jun 1, 2011, 12:58 PM EDT (16:58 UTC)

Expired

Jun 1, 2011, 7:51 PM EDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Albany radar (KENX), 105 km from the middle of the area, began a volume at 16:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Two or more tornadoes

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1048Jun 1, 12:26 PM EDT
• Mesoscale Discussion 1053Jun 1, 4:17 PM EDT
• Mesoscale Discussion 1056Jun 1, 5:47 PM EDT
• Mesoscale Discussion 1058Jun 1, 7:09 PM EDT

266 
WWUS20 KWNS 011658
SEL1
SPC WW 011658
CTZ000-MAZ000-MEZ000-NHZ000-NJZ000-NYZ000-PAZ000-RIZ000-CWZ000-02000
0-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 411
NWS STORM PREDICTION CENTER NORMAN OK
100 PM EDT WED JUN 1 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

       CONNECTICUT
       MASSACHUSETTS
       WESTERN MAINE
       NEW HAMPSHIRE
       NEW JERSEY
       SOUTHEAST NEW YORK
       SOUTHEAST PENNSYLVANIA
       RHODE ISLAND
       COASTAL WATERS

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 100 PM UNTIL
800 PM EDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 10 MILES SOUTH SOUTHWEST OF
PHILADELPHIA PENNSYLVANIA TO 35 MILES NORTHWEST OF AUGUSTA MAINE.
 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).

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 410...

DISCUSSION...SCATTERED THUNDERSTORMS WILL CONTINUE TO INTENSIFY OVER
PORTIONS OF VT/NY/PA AND TRACK EASTWARD ACROSS PORTIONS OF NEW
ENGLAND...NY/PA/NJ THROUGH THE AFTERNOON.  A VERY UNSTABLE AIR MASS
HAS DEVELOPED ACROSS THIS REGION WITH DEWPOINTS WELL INTO THE 60S
AND MLCAPE VALUES OVER 3500 J/KG.  THIS COMBINED WITH STRONG
WESTERLY FLOW ALOFT AND INCREASING SOUTHERLY LOW LEVEL WINDS WILL
POSE A RISK OF SUPERCELL STORMS CAPABLE OF LARGE HAIL...DAMAGING
WINDS...AND ISOLATED TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 28035.


...HART

Tornado Watches in New Jersey, 2011Tornado Watches in Massachusetts, 2011Tornado Watches in New Hampshire, 2011Every tornado watch in 2011

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.