Severe Thunderstorm Watch 280

Issued

May 16, 2012, 1:18 PM EDT (17:18 UTC)

Expired

May 16, 2012, 10:00 PM EDT

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Burlington radar (KCXX), 112 km from the middle of the area, began a volume at 17:18 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

20%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

80%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 824May 16, 12:27 PM EDT
• Mesoscale Discussion 825May 16, 3:37 PM EDT
• Mesoscale Discussion 826May 16, 6:36 PM EDT
• Mesoscale Discussion 827May 16, 8:42 PM EDT

200 
WWUS20 KWNS 161718
SEL0
SPC WW 161718
CTZ000-MAZ000-MEZ000-NHZ000-NYZ000-PAZ000-VTZ000-170100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 280
NWS STORM PREDICTION CENTER NORMAN OK
120 PM EDT WED MAY 16 2012

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

       WESTERN CONNECTICUT
       WESTERN AND CENTRAL MASSACHUSETTS
       WESTERN MAINE
       MUCH OF NEW HAMPSHIRE
       EASTERN NEW YORK
       NORTHEAST PENNSYLVANIA
       VERMONT

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 120 PM UNTIL
900 PM EDT.

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

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 110
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHWEST OF
NEWPORT VERMONT TO 20 MILES SOUTH OF MONTICELLO NEW YORK.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO INTENSIFY THIS
AFTERNOON ACROSS MUCH OF EASTERN NY/NORTHEAST PA AND WESTERN NEW
ENGLAND AS AN UPPER TROUGH APPROACHES FROM THE WEST.  STRONG DAYTIME
HEATING COUPLED WITH A MOIST BOUNDARY LAYER WILL RESULT IN MODERATE
CAPE VALUES AND LITTLE CINH.  SHEAR PROFILES ARE FAVORABLE FOR
ORGANIZED/SUPERCELL STORMS CAPABLE OF DAMAGING WINDS AND HAIL.

AVIATION...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 450. MEAN STORM
MOTION VECTOR 26030.


...HART

Severe Thunderstorm Watches in New York, 2012Severe Thunderstorm Watches in Vermont, 2012Severe Thunderstorm Watches in Pennsylvania, 2012Every severe thunderstorm watch in 2012

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.