Tornado Watch 813

Issued

Sep 8, 2004, 6:50 AM EDT (10:50 UTC)

Expired

Sep 8, 2004, 2:00 PM EDT

In force

7 hr

Issued by

the Storm Prediction Center

The Raleigh/Durham radar (KRAX), 65 km from the middle of the area, began a volume at 10:52 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.

• Mesoscale Discussion 2187Sep 8, 3:38 AM EDT
• Mesoscale Discussion 2188Sep 8, 8:41 AM EDT
• Mesoscale Discussion 2189Sep 8, 12:00 PM EDT

000 
WWUS20 KWNS 081051
SEL3  
SPC WW 081050
NCZ000-VAZ000-081800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 813
NWS STORM PREDICTION CENTER NORMAN OK
650 AM EDT WED SEP 8 2004

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

       CENTRAL AND EASTERN NORTH CAROLINA
       SOUTHERN VIRGINIA

EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 650 AM UNTIL
200 PM EDT.

TORNADOES...THUNDERSTORM WIND GUSTS TO 60 MPH...AND DANGEROUS
LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 100 STATUTE MILES EAST AND
WEST OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF FAYETTEVILLE NORTH
CAROLINA TO 45 MILES NORTH OF DANVILLE VIRGINIA.

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 812. WATCH NUMBER 812 WILL NOT BE IN EFFECT AFTER 650
AM EDT. 

DISCUSSION...POTENTIAL FOR TORNADIC MINI-SUPERCELLS EXPECTED TO
INCREASE NEXT SEVERAL HOURS AS DIFFERENTIAL/DIABATIC HEATING BEGINS
TO DESTABILIZE ALREADY WELL-SHEARED AIR MASS FROM CENTRAL NC INTO
SRN VA.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME
TURBULENCE AND SURFACE WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI
WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION VECTOR 17035.


...EDWARDS/Evans

343,0805 371,0810 371,0773 343,0771

Tornado Watches in North Carolina, 2004Tornado Watches in Virginia, 2004Tornado Watches in South Carolina, 2004Every tornado watch in 2004

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.