Alert archive / Virginia / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 674

August 9, 20004 states

The Storm Prediction Center issued this severe thunderstorm watch at Aug 9, 2000, 10:30 PM EDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Aug 9, 2000, 10:30 PM EDT (02:30 UTC)
Expired: Aug 10, 2000, 4:00 AM EDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 63 counties

Bell County, KY, Clay County, KY, Harlan County, KY, Knox County, KY, Leslie County, KY, Letcher County, KY, Perry County, KY, Alamance County, NC, Alexander County, NC, Alleghany County, NC, Ashe County, NC, Avery County, NC, Caldwell County, NC, Caswell County, NC, Davie County, NC, Durham County, NC, Forsyth County, NC, Guilford County, NC, Madison County, NC, Mitchell County, NC, Orange County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Yancey County, NC, Carter County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Johnson County, TN, Sullivan County, TN, Unicoi County, TN, Washington County, TN, Bland County, VA, Buchanan County, VA, Carroll County, VA, City of Bristol, VA, City of Danville, VA, City of Galax, VA, City of Martinsville, VA, City of Norton, VA, City of Radford, VA, Dickenson County, VA, Floyd County, VA, Franklin County, VA, Grayson County, VA, Henry County, VA, Lee County, VA, Montgomery County, VA, Patrick County, VA, Pittsylvania County, VA, Pulaski County, VA, Russell County, VA, Scott County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Wythe County, VA

The radar

The Knoxville radar (KMRX), 142 km from the middle of the area, began a volume at 02:34 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

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

Issued	Product	Office	Counties	Lasted
Aug 9, 10:58 PM EDT	Severe Thunderstorm Warning	JKL	Perry	47 min
Aug 9, 11:05 PM EDT	Severe Thunderstorm Warning	JKL	Leslie	40 min
Aug 9, 11:13 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery	32 min
Aug 9, 11:19 PM EDT	Flash Flood Warning	RLX	Buchanan	3 hr
Aug 9, 11:19 PM EDT	Severe Thunderstorm Warning	RNK	Pulaski	26 min
Aug 9, 11:20 PM EDT	Severe Thunderstorm Warning	RNK	Franklin	40 min
Aug 9, 11:29 PM EDT	Severe Thunderstorm Warning	MRX	Russell, Washington	31 min
Aug 9, 11:29 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania	61 min
Aug 9, 11:43 PM EDT	Flash Flood Warning	RNK	Buchanan	3 hr
Aug 10, 12:06 AM EDT	Severe Thunderstorm Warning	JKL	Knox, Laurel, Pulaski, Whitley	39 min
Aug 10, 12:06 AM EDT	Severe Thunderstorm Warning	JKL	Bell	39 min
Aug 10, 12:09 AM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	66 min
Aug 10, 12:16 AM EDT	Severe Thunderstorm Warning	MRX	Sullivan	29 min
Aug 10, 12:19 AM EDT	Severe Thunderstorm Warning	RNK	Carroll, City of Galax	26 min
Aug 10, 12:20 AM EDT	Severe Thunderstorm Warning	RNK	Henry, City of Martinsville	40 min
Aug 10, 12:25 AM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes, Surry	65 min
Aug 10, 12:30 AM EDT	Severe Thunderstorm Warning	RNK	Caswell	45 min
Aug 10, 12:37 AM EDT	Severe Thunderstorm Warning	MRX	Scott	23 min
Aug 10, 12:44 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Hancock	31 min
Aug 10, 12:44 AM EDT	Severe Thunderstorm Warning	MRX	Hawkins, Sullivan, Washington	31 min
Aug 10, 1:00 AM EDT	Severe Thunderstorm Warning	RAH	Forsyth, Guilford	45 min
Aug 10, 1:00 AM EDT	Severe Thunderstorm Warning	RAH	Alamance, Orange	45 min
Aug 10, 1:02 AM EDT	Severe Thunderstorm Warning	RNK	Wilkes	58 min
Aug 10, 1:03 AM EDT	Severe Thunderstorm Warning	MRX	Greene	27 min
Aug 10, 1:10 AM EDT	Severe Thunderstorm Warning	MRX	Grainger, Hamblen, Union	35 min
Aug 10, 1:14 AM EDT	Severe Thunderstorm Warning	GSP	Avery	61 min
Aug 10, 1:36 AM EDT	Severe Thunderstorm Warning	RNK	Yadkin	39 min
Aug 10, 1:37 AM EDT	Severe Thunderstorm Warning	GSP	Alexander, Davie, Iredell	58 min
Aug 10, 1:47 AM EDT	Severe Thunderstorm Warning	RAH	Durham, Granville, Wake	58 min
Aug 10, 1:56 AM EDT	Severe Thunderstorm Warning	GSP	Caldwell	49 min
Aug 10, 2:27 AM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Haywood, Madison	63 min

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 2.5 hours before the alert went out and 195 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2371 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1525 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 2:00 AM EDT	Severe Thunderstorm Watch	SPC	Anson, Buncombe, Burke, Cabarrus, Catawba, Chatham and 24 more	4 hr

Nearby

Severe Thunderstorm Watches in Virginia, 2000 Severe Thunderstorm Watches in North Carolina, 2000 Severe Thunderstorm Watches in Tennessee, 2000 Every severe thunderstorm watch in 2000

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.