Severe Thunderstorm Watch 334

Issued

Jun 1, 2012, 2:13 PM EDT (18:13 UTC)

Expired

Jun 1, 2012, 10:00 PM EDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

Two or more tornadoes

20%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1004Jun 1, 1:03 PM EDT
• Mesoscale Discussion 1005Jun 1, 1:54 PM EDT
• Mesoscale Discussion 1007Jun 1, 3:35 PM EDT
• Mesoscale Discussion 1011Jun 1, 4:31 PM EDT
• Mesoscale Discussion 1016Jun 1, 7:42 PM EDT

547 
WWUS20 KWNS 011812
SEL4
SPC WW 011812
NCZ000-SCZ000-CWZ000-020200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 334
NWS STORM PREDICTION CENTER NORMAN OK
215 PM EDT FRI JUN 1 2012

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

       EASTERN NORTH CAROLINA
       EASTERN SOUTH CAROLINA
       COASTAL WATERS

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 215 PM UNTIL
1000 PM EDT.

HAIL TO 1.5 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 NORTH
NORTHEAST OF ROCKY MOUNT NORTH CAROLINA TO 20 MILES SOUTH
SOUTHEAST OF CHARLESTON SOUTH CAROLINA.  FOR A COMPLETE DEPICTION
OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS
WOU4).

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.

OTHER WATCH INFORMATION...CONTINUE...WW 332...WW 333...

DISCUSSION...STRONG/SEVERE THUNDERSTORMS ARE INCREASING ACROSS THE
EASTERN CAROLINAS THIS AFTERNOON IN A VERY MOIST AND MODERATELY
UNSTABLE AIRMASS. THIS ACTIVITY SHOULD CONTINUE TO INCREASE IN
INTENSITY AS IT LOW LEVEL LAPSE RATES CONTINUE TO STEEPEN AND LARGE
SCALE ASCENT ASSOCIATED WITH AN APPROACHING UPPER TROUGH
STRENGTHENS. DEEP LAYER SHEAR ON THE ORDER OF 35KT SUGGESTS
ORGANIZED MULTI-CELL UPDRAFTS AND PERHAPS A FEW SUPERCELLS. BOTH
STORM MODES WILL SUPPORT SOME HAIL...AROUND 1 INCH IN DIAMETER...AND
LOCALIZED DAMAGING WINDS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 24035.


...CARBIN

Severe Thunderstorm Watches in North Carolina, 2012Severe Thunderstorm Watches in South Carolina, 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.