Alert archive / Virginia / Tornado Watches in 2002

Tornado Watch 755

November 11, 20025 states

The Storm Prediction Center issued this tornado watch at Nov 11, 2002, 1:10 AM EST for 5 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Nov 11, 2002, 1:10 AM EST (06:10 UTC)
Expired
Nov 11, 2002, 7:00 AM EST
In force
6 hr
Issued by
the Storm Prediction Center
All 74 counties

Alexander County, NC, Alleghany County, NC, Ashe County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Davidson County, NC, Davie County, NC, Forsyth County, NC, Gaston County, NC, Guilford County, NC, Henderson County, NC, Iredell County, NC, Lincoln County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Polk County, NC, Rockingham County, NC, Rowan County, NC, Rutherford County, NC, Stokes County, NC, Surry County, NC, Transylvania County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Yancey County, NC, Cherokee County, SC, York County, SC, Johnson County, TN, Albemarle County, VA, Alleghany County, VA, Amherst County, VA, Appomattox County, VA, Bedford County, VA, Bland County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Carroll County, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Covington, VA, City of Danville, VA, City of Galax, VA, City of Lexington, VA, City of Lynchburg, VA, City of Martinsville, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, Craig County, VA, Floyd County, VA, Fluvanna County, VA, Franklin County, VA, Giles County, VA, Grayson County, VA, Henry County, VA, Montgomery County, VA, Nelson County, VA, Patrick County, VA, Pittsylvania County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Smyth County, VA, Wythe County, VA, Greenbrier County, WV, Monroe County, WV

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Nov 11, 1:38 AM ESTSevere Thunderstorm WarningRNKBedford, Franklin37 min
Nov 11, 2:08 AM ESTSevere Thunderstorm WarningRNKSmyth37 min
Nov 11, 2:24 AM ESTSevere Thunderstorm WarningRNKWythe51 min
Nov 11, 2:37 AM ESTSevere Thunderstorm WarningRNKBuckingham23 min
Nov 11, 3:01 AM ESTSevere Thunderstorm WarningRNKMontgomery, Pulaski, City of Radford29 min
Nov 11, 3:37 AM ESTSevere Thunderstorm WarningRNKRoanoke, City of Roanoke, City of Salem23 min
Nov 11, 3:54 AM ESTSevere Thunderstorm WarningRNKBedford21 min
Nov 11, 4:29 AM ESTSevere Thunderstorm WarningRNKAmherst, Bedford, City of Lynchburg31 min
Nov 11, 4:52 AM ESTSevere Thunderstorm WarningLWXNelson23 min
Nov 11, 5:36 AM ESTSevere Thunderstorm WarningAKQFluvanna, Louisa29 min
Nov 11, 6:15 AM ESTSevere Thunderstorm WarningGSPCherokee, Union, York45 min
Nov 11, 6:51 AM ESTSevere Thunderstorm WarningGSPMecklenburg, Union54 min
Nov 11, 6:53 AM ESTSevere Thunderstorm WarningRNKCampbell, City of Lynchburg37 min

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 6.2 hours before the alert went out and 110 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 110608
SEL5  
SPC WW 110610
NCZ000-VAZ000-111200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 755
STORM PREDICTION CENTER NORMAN OK
110 AM EST MON NOV 11 2002

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

   WESTERN NORTH CAROLINA                     
   WESTERN VIRGINIA                           

EFFECTIVE THIS MONDAY MORNING FROM 110 AM UNTIL 700 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 70 STATUTE MILES EAST AND WEST
OF A LINE FROM 45 MILES SOUTHEAST OF ASHEVILLE NORTH CAROLINA TO 50
MILES NORTH OF LYNCHBURG 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...  CONTINUE...WW 751...WW 752...WW
753...WW 754...

DISCUSSION...SHEAR AND INSTABILITY REMAIN FAVORABLE FOR SUPERCELLS
EAST OF THE MOUNTAINS EARLY THIS MORNING.  THOUGH ONGOING ACTIVITY
IS WEAKENING OVER THE HIGHER TERRAIN OF ERN TN...EXPECT NEW
DEVELOPMENT TO SPREAD EWD WITH A THREAT OF TORNADIC SUPERCELLS
THROUGH THE REMAINDER OF THE NIGHT INTO WRN AND CENTRAL NC/VA.  


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

345,0831 380,0802 380,0775 345,0804

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, 5:40 AM ESTTornado WatchSPCRobeson, Scotland5 hr
Nov 11, 6:35 AM ESTTornado WatchSPCAlamance, Cabarrus, Caswell, Chatham, Cumberland, Davidson and 34 more4 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 Virginia, 2002Tornado Watches in North Carolina, 2002Tornado Watches in South Carolina, 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.