Alert archive / North Carolina / Tornado Watches in 2002

Tornado Watch 760

November 11, 200240 counties in North Carolina; Cherokee County, South Carolina; City of Danville, Virginia

The Storm Prediction Center issued this tornado watch at Nov 11, 2002, 6:35 AM EST for 40 counties in North Carolina; Cherokee County, South Carolina; City of Danville, Virginia. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Nov 11, 2002, 6:35 AM EST (11:35 UTC)
Expired
Nov 11, 2002, 11:00 AM EST
In force
4 hr
Issued by
the Storm Prediction Center
All 42 counties

Alamance County, NC, Cabarrus County, NC, Caswell County, NC, Chatham County, NC, Cumberland County, NC, Davidson County, NC, Davie County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Gaston County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Iredell County, NC, Johnston County, NC, Lee County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Rockingham County, NC, Rowan County, NC, Stanly County, NC, Stokes County, NC, Union County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wilson County, NC, Cherokee County, SC, City of Danville, VA

Warnings issued inside it

20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Nov 11, 6:51 AM ESTSevere Thunderstorm WarningGSPMecklenburg, Union54 min
Nov 11, 7:23 AM ESTSevere Thunderstorm WarningRAHForsyth37 min
Nov 11, 8:04 AM ESTSevere Thunderstorm WarningRNKRockingham26 min
Nov 11, 8:04 AM ESTSevere Thunderstorm WarningRNKRockingham26 min
Nov 11, 8:11 AM ESTSevere Thunderstorm WarningGSPUnion34 min
Nov 11, 8:11 AM ESTSevere Thunderstorm WarningGSPUnion34 min
Nov 11, 8:41 AM ESTSevere Thunderstorm WarningRAHMoore34 min
Nov 11, 8:44 AM ESTSevere Thunderstorm WarningRAHChatham46 min
Nov 11, 8:45 AM ESTSevere Thunderstorm WarningRAHAnson, Richmond45 min
Nov 11, 8:57 AM ESTSevere Thunderstorm WarningRAHLee48 min
Nov 11, 9:11 AM ESTSevere Thunderstorm WarningRAHHoke, Scotland49 min
Nov 11, 9:15 AM ESTSevere Thunderstorm WarningRAHDurham, Orange30 min
Nov 11, 9:20 AM ESTSevere Thunderstorm WarningRAHHarnett55 min
Nov 11, 9:25 AM ESTSevere Thunderstorm WarningRAHWake50 min
Nov 11, 9:40 AM ESTTornado WarningRAHWake35 min
Nov 11, 9:41 AM ESTSevere Thunderstorm WarningRAHCumberland49 min
Nov 11, 9:52 AM ESTTornado WarningRAHCumberland, Harnett38 min
Nov 11, 10:04 AM ESTSevere Thunderstorm WarningRAHJohnston41 min
Nov 11, 10:30 AM ESTSevere Thunderstorm WarningRAHNash30 min
Nov 11, 10:34 AM ESTSevere Thunderstorm WarningRAHNash26 min

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 11.6 hours before the alert went out and 51 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2002-11-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 316 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2002-11-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 276 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
316 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
840 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
276 m²/s²
0-3 km storm-relative helicity
400 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS20 KWNS 111146
SEL0  
SPC WW 111135
NCZ000-SCZ000-111600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 760
STORM PREDICTION CENTER NORMAN OK
635 AM EST MON NOV 11 2002

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

   CENTRAL NORTH CAROLINA                     
   A SMALL PART OF NORTHWEST SOUTH CAROLINA                     

EFFECTIVE THIS MONDAY MORNING FROM 635 AM UNTIL 1100 AM EST.

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 ALONG AND 95 STATUTE MILES EAST AND WEST
OF A LINE FROM 45 MILES WEST SOUTHWEST OF SOUTHERN PINES NORTH
CAROLINA TO 55 MILES NORTH NORTHEAST OF RALEIGH NORTH CAROLINA.

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 755.  WATCH NUMBER 755 WILL NOT BE IN EFFECT AFTER 635 AM
EST.  CONTINUE...WW 756...WW 757...WW 758...WW 759...

DISCUSSION...AIRMASS DESTABILIZATION WILL CONTINUE ACROSS NC
THROUGH THE MORNING...AS SUPERCELLS DEVELOP NEWD OUT OF SC.  GIVEN
THE DEGREE OF SHEAR AND MODEST INSTABILITY IN PLACE...FURTHER
SUPERCELL DEVELOPMENT IS ANTICIPATED INTO CENTRAL NC THIS MORNING
WITH AN ATTENDANT THREAT OF ISOLATED TORNADOES AND WIND DAMAGE.


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 25040.


...EVANS

345,0814 363,0800 363,0764 345,0782

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 10, 10:45 PM ESTTornado WatchSPCCherokee, Clay, Graham, Haywood, Jackson, Macon and 2 more5 hr
Nov 11, 1:10 AM ESTTornado WatchSPCAlexander, Alleghany, Ashe, Avery, Buncombe, Burke and 26 more6 hr
Nov 11, 5:40 AM ESTTornado WatchSPCRobeson, Scotland5 hr
Nov 11, 10:00 AM ESTTornado WatchSPCBeaufort, Bertie, Bladen, Brunswick, Camden, Chowan and 22 more5 hr
Nov 10, 11:05 PM ESTTornado WatchSPCAbbeville, Anderson, Greenville, Laurens, Oconee, Pickens and 3 more6 hr
Nov 11, 3:30 AM ESTTornado WatchSPCAbbeville, Anderson, Chester, Edgefield, Fairfield, Greenville and 9 more6 hr
Nov 11, 11:05 AM ESTSevere Thunderstorm WatchSPCAllendale, Bamberg, Barnwell, Beaufort, Berkeley, Charleston and 6 more6 hr
Nov 11, 5:05 AM ESTTornado WatchSPCAmelia, Arlington, Brunswick, Caroline, Charles City, Chesterfield and 37 more6 hr
Nov 11, 11:00 AM ESTTornado WatchSPCAccomack, Brunswick, Charles City, Chesterfield, Dinwiddie, Essex and 35 more4 hr

Nearby

Tornado Watches in North Carolina, 2002Tornado Watches in South Carolina, 2002Tornado Watches in Virginia, 2002Every tornado watch in 2002

Sources

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.