Tornado Watch 285

Issued

Jun 7, 2013, 5:37 AM EDT (09:37 UTC)

Expired

Jun 7, 2013, 1:03 PM EDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

0.5 in

Strongest gust expected

60 kt

The Norfolk radar (KAKQ), 106 km from the middle of the area, began a volume at 09:39 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

50%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

10%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

60%

• Mesoscale Discussion 987Jun 7, 3:34 AM EDT
• Mesoscale Discussion 988Jun 7, 8:35 AM EDT
• Mesoscale Discussion 989Jun 7, 11:26 AM EDT

679 
WWUS20 KWNS 070943
SEL5  
SPC WW 070943
NCZ000-VAZ000-CWZ000-071700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 285
NWS STORM PREDICTION CENTER NORMAN OK
540 AM EDT FRI JUN 7 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  EASTERN NORTH CAROLINA
  SOUTHEASTERN VIRGINIA
  COASTAL WATERS

* EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 540 AM UNTIL
  100 PM EDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES POSSIBLE
  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES EAST NORTHEAST OF
NORFOLK VIRGINIA TO 20 MILES SOUTH SOUTHEAST OF JACKSONVILLE
NORTH CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

DISCUSSION...STRENGTHENING LOW-LEVEL SHEAR ON THE SOUTHERN FRINGE OF
AN INITIAL CLUSTER OF STORMS DEVELOPING NORTHEASTWARD ACROSS EASTERN
NORTH CAROLINA...COUPLED WITH INLAND DESTABILIZATION...IS BEGINNING
TO SUPPORT SUSTAINED LOW-LEVEL MESOCYCLONES WITH CELLS OVER INLAND
AREAS.  THIS ACTIVITY PROBABLY WILL SPREAD ACROSS THE REMAINDER OF
EASTERN NORTH CAROLINA AND THE OUTER BANKS EARLY THIS MORNING WITH
THE RISK FOR ADDITIONAL TORNADOES.  AT THE SAME TIME...AFTER
DAYBREAK...SURFACE HEATING OF THE MOIST BOUNDARY LAYER IN THE WAKE
OF THIS ACTIVITY WILL CONTRIBUTE TO SUFFICIENT DESTABILIZATION FOR
ADDITIONAL DISCRETE STORMS AHEAD OF THE REMNANTS OF ANDREA AS IT
ACCELERATES NORTHEASTWARD TOWARD THE MID ATLANTIC COAST.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
400. MEAN STORM MOTION VECTOR 19035.


...KERR

Tornado Watches in North Carolina, 2013Tornado Watches in Virginia, 2013Every tornado watch in 2013

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.