Alert archive / Virginia / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 214

May 2, 200214 counties in North Carolina; 27 counties in Virginia; Mercer County, Monroe County, Summers County, West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at May 2, 2002, 5:00 PM EDT for 14 counties in North Carolina; 27 counties in Virginia; Mercer County, Monroe County, Summers County, West Virginia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 2, 2002, 5:00 PM EDT (21:00 UTC)
Expired
May 2, 2002, 10:00 PM EDT
In force
5 hr
Issued by
the Storm Prediction Center
All 44 counties

Alamance County, NC, Alleghany County, NC, Caswell County, NC, Durham County, NC, Forsyth County, NC, Granville County, NC, Guilford County, NC, Orange County, NC, Person County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Wilkes County, NC, Yadkin County, NC, Appomattox County, VA, Bedford County, VA, Bland County, VA, Botetourt County, VA, Campbell County, VA, Carroll County, VA, Charlotte County, VA, City of Danville, VA, City of Galax, 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, Franklin County, VA, Giles County, VA, Grayson County, VA, Halifax County, VA, Henry County, VA, Montgomery County, VA, Patrick County, VA, Pittsylvania County, VA, Pulaski County, VA, Roanoke County, VA, Wythe County, VA, Mercer County, WV, Monroe County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 3 km from the middle of the area, began a volume at 21:03 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

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

IssuedProductOfficeCountiesLasted
May 2, 5:01 PM EDTSevere Thunderstorm WarningRNKMontgomery, Pulaski, City of Radford44 min
May 2, 5:14 PM EDTSevere Thunderstorm WarningRNKHalifax46 min
May 2, 5:25 PM EDTSevere Thunderstorm WarningRNKRoanoke, City of Roanoke, City of Salem50 min
May 2, 5:32 PM EDTFlash Flood WarningRNKGiles3 hr
May 2, 5:36 PM EDTSevere Thunderstorm WarningRNKBedford, Franklin39 min
May 2, 5:57 PM EDTSevere Thunderstorm WarningRNKHalifax33 min
May 2, 6:11 PM EDTSevere Thunderstorm WarningRNKPatrick49 min
May 2, 6:17 PM EDTFlash Flood WarningRNKBland3 hr
May 2, 6:37 PM EDTSevere Thunderstorm WarningRNKPittsylvania23 min
May 2, 6:41 PM EDTFlash Flood WarningRNKMonroe3 hr
May 2, 7:00 PM EDTSevere Thunderstorm WarningRNKRockingham45 min
May 2, 7:04 PM EDTSevere Thunderstorm WarningRNKFloyd26 min
May 2, 7:30 PM EDTFlash Flood WarningRNKMontgomery, Pulaski2 hr
May 2, 9:09 PM EDTSevere Thunderstorm WarningRNKHalifax21 min

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 9.0 hours before the alert went out and 69 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 2002-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 317 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 2002-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 382 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
317 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
667 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
382 m²/s²
0-3 km storm-relative helicity
418 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 1, 9:00 PM EDTTornado WatchSPCMitchell4 hr
May 1, 11:30 PM EDTSevere Thunderstorm WatchSPCAlexander, Alleghany, Ashe, Avery, Cabarrus, Caldwell and 12 more4 hr
May 2, 1:30 PM EDTSevere Thunderstorm WatchSPCAshe, Avery, Buncombe, Burke, Caldwell, Haywood and 6 more7 hr
May 2, 4:00 PM EDTTornado WatchSPCBertie, Camden, Chowan, Currituck, Edgecombe, Franklin and 12 more5 hr
May 2, 4:30 PM EDTSevere Thunderstorm WatchSPCAlamance, Alleghany, Caswell, Durham, Forsyth, Granville and 8 more6 hr
May 2, 9:45 AM EDTTornado WatchSPCBuchanan, Dickenson, Lee, Russell, Scott, Wise and 2 more4 hr
May 2, 12:30 PM EDTSevere Thunderstorm WatchSPCAlbemarle, Alleghany, Amherst, Appomattox, Augusta, Bath and 45 more5 hr
May 2, 2:30 PM EDTTornado WatchSPCArlington, Clarke, Culpeper, Fairfax, Fauquier, Frederick and 16 more7 hr
May 2, 2:45 PM EDTTornado WatchSPCAccomack, Amelia, Brunswick, Caroline, Charles City, Chesterfield and 50 more6 hr
May 2, 4:30 AM EDTSevere Thunderstorm WatchSPCBarbour, Brooke, Doddridge, Harrison, Marion, Marshall and 11 more4 hr

Nearby

Severe Thunderstorm Watches in Virginia, 2002Severe Thunderstorm Watches in North Carolina, 2002Severe Thunderstorm Watches in West Virginia, 2002Every severe thunderstorm 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; radar from the NEXRAD Level II archive.