Alert archive / Virginia / Tornado Watches in 2003

Tornado Watch 317

May 9, 200364 counties in Virginia; Greenbrier County, Monroe County, West Virginia

The Storm Prediction Center issued this tornado watch at May 9, 2003, 2:05 PM EDT for 64 counties in Virginia; Greenbrier County, Monroe County, West Virginia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 9, 2003, 2:05 PM EDT (18:05 UTC)
Expired
May 9, 2003, 8:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 66 counties

Albemarle County, VA, Alleghany County, VA, Amelia County, VA, Amherst County, VA, Appomattox County, VA, Augusta County, VA, Bath County, VA, Bedford County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Caroline County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Colonial Heights, VA, City of Covington, VA, City of Hampton, VA, City of Hopewell, VA, City of Lexington, VA, City of Lynchburg, VA, City of Newport News, VA, City of Petersburg, VA, City of Poquoson, VA, City of Radford, VA, City of Richmond, VA, City of Roanoke, VA, City of Salem, VA, City of Staunton, VA, City of Waynesboro, VA, City of Williamsburg, VA, Craig County, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Fluvanna County, VA, Giles County, VA, Gloucester County, VA, Goochland County, VA, Hanover County, VA, Henrico County, VA, James City County, VA, King and Queen County, VA, King William County, VA, Lancaster County, VA, Louisa County, VA, Mathews County, VA, Middlesex County, VA, Montgomery County, VA, Nelson County, VA, New Kent County, VA, Northumberland County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Pulaski County, VA, Richmond County, VA, Roanoke County, VA, Rockbridge County, VA, Surry County, VA, York County, VA, Greenbrier County, WV, Monroe County, WV

The radar

The Roanoke radar (KFCX), 143 km from the middle of the area, began a volume at 18:09 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 9, 2:05 PM EDTSevere Thunderstorm WarningLWXAlbemarle, Nelson, City of Charlottesville40 min
May 9, 2:15 PM EDTTornado WarningLWXAlbemarle, City of Charlottesville45 min
May 9, 2:33 PM EDTSevere Thunderstorm WarningRNKGreenbrier27 min
May 9, 2:40 PM EDTSevere Thunderstorm WarningAKQFluvanna25 min
May 9, 2:45 PM EDTSevere Thunderstorm WarningRNKBuckingham30 min
May 9, 2:51 PM EDTSevere Thunderstorm WarningLWXAugusta, Nelson54 min
May 9, 2:51 PM EDTSevere Thunderstorm WarningRNKAlleghany, Craig24 min
May 9, 2:58 PM EDTTornado WarningAKQCumberland32 min
May 9, 2:59 PM EDTTornado WarningRNKBuckingham31 min
May 9, 3:03 PM EDTSevere Thunderstorm WarningLWXAlbemarle42 min
May 9, 3:07 PM EDTSevere Thunderstorm WarningRNKBotetourt23 min
May 9, 3:09 PM EDTTornado WarningAKQAmelia, Powhatan31 min
May 9, 3:31 PM EDTSevere Thunderstorm WarningRNKBedford29 min
May 9, 3:37 PM EDTTornado WarningAKQAmelia, Dinwiddie38 min
May 9, 3:39 PM EDTSevere Thunderstorm WarningAKQChesterfield31 min
May 9, 3:52 PM EDTSevere Thunderstorm WarningAKQNottoway18 min
May 9, 3:53 PM EDTSevere Thunderstorm WarningRNKBedford37 min
May 9, 4:07 PM EDTSevere Thunderstorm WarningRNKCampbell23 min
May 9, 4:11 PM EDTSevere Thunderstorm WarningRNKRoanoke, City of Roanoke, City of Salem34 min
May 9, 4:12 PM EDTTornado WarningAKQDinwiddie, Greensville, Sussex38 min
May 9, 4:30 PM EDTSevere Thunderstorm WarningRNKCampbell30 min
May 9, 4:35 PM EDTSevere Thunderstorm WarningAKQBrunswick, Dinwiddie, Nottoway40 min
May 9, 4:46 PM EDTSevere Thunderstorm WarningRNKBedford29 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 6.1 hours before the alert went out and 77 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, Roanoke, VA at 12:00Z on 2003-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 59 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, Roanoke, VA at 12:00Z on 2003-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 square meters per square second.19395878Sfc1 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
59 J/kg
Mixed-layer CIN
-186 J/kg
Mixed-layer LCL
982 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 091801
SEL7  
SPC WW 091805
VAZ000-WVZ000-100000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 317 
NWS STORM PREDICTION CENTER NORMAN OK 
205 PM EDT FRI MAY 9 2003

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

       CENTRAL AND SOUTHERN VIRGINIA
       SOUTHEAST WEST VIRGINIA

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 205 PM UNTIL 800
PM EDT.

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 40 STATUTE MILES EITHER SIDE
OF A LINE FROM 25 MILES WEST SOUTHWEST OF WHITE SULPHUR SPRINGS
WEST VIRGINIA TO 65 MILES EAST OF RICHMOND 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.




DISCUSSION...SCATTERED THUNDERSTORMS ARE INCREASING OVER EASTERN WV
AND NORTHERN VA...IN VICINITY OF SURFACE WARM FRONT.  THESE STORMS
ARE EXPECTED TO SPREAD SOUTHEASTWARD ACROSS CENTRAL/SOUTHERN VA
THROUGH THE AFTERNOON HOURS.  LARGE HAIL AND DAMAGING WINDS ARE THE
MAIN THREAT.  HOWEVER...ENHANCED LOW LEVEL SHEAR NEAR THE WARM FRONT
SUGGESTS THE POTENTIAL FOR ISOLATED TORNADOES.

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 24035.


...HART

381,0804 380,0760 365,0760 370,0804 

WWUS20 KWNS 091801
SEL7  
SPC WW 091805
VAZ000-WVZ000-100000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 317 
NWS STORM PREDICTION CENTER NORMAN OK 
205 PM EDT FRI MAY 9 2003

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

       CENTRAL AND SOUTHERN VIRGINIA
       SOUTHEAST WEST VIRGINIA

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 205 PM UNTIL 800
PM EDT.

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 40 STATUTE MILES EITHER SIDE
OF A LINE FROM 25 MILES WEST SOUTHWEST OF WHITE SULPHUR SPRINGS
WEST VIRGINIA TO 65 MILES EAST OF RICHMOND 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.




DISCUSSION...SCATTERED THUNDERSTORMS ARE INCREASING OVER EASTERN WV
AND NORTHERN VA...IN VICINITY OF SURFACE WARM FRONT.  THESE STORMS
ARE EXPECTED TO SPREAD SOUTHEASTWARD ACROSS CENTRAL/SOUTHERN VA
THROUGH THE AFTERNOON HOURS.  LARGE HAIL AND DAMAGING WINDS ARE THE
MAIN THREAT.  HOWEVER...ENHANCED LOW LEVEL SHEAR NEAR THE WARM FRONT
SUGGESTS THE POTENTIAL FOR ISOLATED TORNADOES.

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 24035.


...HART

381,0804 380,0760 365,0760 370,0804

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 9, 12:53 PM EDTMesoscale DiscussionSPCAlbemarle, Alleghany, Amelia, Amherst, Appomattox, Augusta and 57 more3 hr
May 9, 3:55 PM EDTMesoscale DiscussionSPCAlbemarle, Alleghany, Amelia, Amherst, Appomattox, Bath and 78 more2 hr
May 9, 4:15 PM EDTTornado WatchSPCBrunswick, Greensville, Halifax, Lunenburg, Mecklenburg, Southampton and 6 more6 hr
May 9, 7:35 PM EDTSevere Thunderstorm WatchSPCBuchanan, Dickenson, Lee, Russell, Scott, Washington and 2 more5 hr
May 9, 5:36 PM EDTMesoscale DiscussionSPCBraxton, Calhoun, Gilmer, Jackson, Lewis, Pleasants and 4 more114 min
May 9, 6:00 PM EDTSevere Thunderstorm WatchSPCBoone, Braxton, Cabell, Calhoun, Clay, Doddridge and 21 more5 hr

Nearby

Tornado Watches in Virginia, 2003Tornado Watches in West Virginia, 2003Every tornado watch in 2003

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; radar from the NEXRAD Level II archive.