Alert archive / Virginia / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 666

August 9, 20004 states

The Storm Prediction Center issued this severe thunderstorm watch at Aug 9, 2000, 1:00 PM EDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Aug 9, 2000, 1:00 PM EDT (17:00 UTC)
Expired: Aug 9, 2000, 7:00 PM EDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 80 counties

Allegany County, MD, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Carroll County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Garrett County, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Saint Mary's County, MD, Washington County, MD, Adams County, PA, Bedford County, PA, Cumberland County, PA, Fayette County, PA, Franklin County, PA, Fulton County, PA, Greene County, PA, Somerset County, PA, Washington County, PA, York County, PA, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Manassas, VA, City of Manassas Park, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, King George County, VA, Loudoun County, VA, Madison County, VA, Orange County, VA, Page County, VA, Prince William County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Barbour County, WV, Berkeley County, WV, Braxton County, WV, Brooke County, WV, Doddridge County, WV, Gilmer County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Harrison County, WV, Jefferson County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Mineral County, WV, Monongalia County, WV, Morgan County, WV, Ohio County, WV, Pendleton County, WV, Pocahontas County, WV, Preston County, WV, Randolph County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Webster County, WV, Wetzel County, WV

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Aug 9, 1:31 PM EDT	Severe Thunderstorm Warning	RLX	Harrison	44 min
Aug 9, 1:53 PM EDT	Severe Thunderstorm Warning	RLX	Braxton, Fayette, Nicholas, Webster	37 min
Aug 9, 1:53 PM EDT	Severe Thunderstorm Warning	RLX	Barbour, Lewis, Upshur	37 min
Aug 9, 2:05 PM EDT	Severe Thunderstorm Warning	PBZ	Preston	55 min
Aug 9, 2:06 PM EDT	Severe Thunderstorm Warning	RLX	Taylor	24 min
Aug 9, 2:33 PM EDT	Severe Thunderstorm Warning	RLX	Pocahontas, Randolph	27 min
Aug 9, 2:36 PM EDT	Severe Thunderstorm Warning	LWX	Grant, Hampshire, Hardy, Mineral	54 min
Aug 9, 2:36 PM EDT	Severe Thunderstorm Warning	LWX	Pendleton	54 min
Aug 9, 2:46 PM EDT	Severe Thunderstorm Warning	LWX	Highland	44 min
Aug 9, 3:01 PM EDT	Severe Thunderstorm Warning	LWX	Page, Rockingham, Shenandoah	44 min
Aug 9, 3:01 PM EDT	Severe Thunderstorm Warning	LWX	City of Harrisonburg	44 min
Aug 9, 3:24 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Shenandoah, Warren	66 min
Aug 9, 3:24 PM EDT	Severe Thunderstorm Warning	LWX	City of Winchester	66 min
Aug 9, 3:24 PM EDT	Severe Thunderstorm Warning	LWX	Hampshire, Hardy	66 min
Aug 9, 3:44 PM EDT	Severe Thunderstorm Warning	LWX	Greene, Madison, Page, Rockingham	46 min
Aug 9, 3:44 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Rappahannock	46 min
Aug 9, 3:44 PM EDT	Severe Thunderstorm Warning	LWX	City of Harrisonburg	46 min
Aug 9, 4:24 PM EDT	Severe Thunderstorm Warning	LWX	Washington	66 min
Aug 9, 4:24 PM EDT	Severe Thunderstorm Warning	LWX	Fairfax, Loudoun, Prince William, City of Fairfax, City of Falls Church	66 min
Aug 9, 4:24 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier, Stafford, Warren	66 min
Aug 9, 4:24 PM EDT	Severe Thunderstorm Warning	LWX	Spotsylvania, City of Fredericksburg	66 min
Aug 9, 4:24 PM EDT	Severe Thunderstorm Warning	LWX	Orange	66 min
Aug 9, 4:24 PM EDT	Severe Thunderstorm Warning	LWX	City of Winchester	66 min
Aug 9, 4:24 PM EDT	Severe Thunderstorm Warning	LWX	City of Manassas, City of Manassas Park	66 min
Aug 9, 5:25 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Prince George's	65 min
Aug 9, 5:25 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery	65 min
Aug 9, 5:25 PM EDT	Severe Thunderstorm Warning	LWX	King George, Prince William, Stafford	65 min
Aug 9, 5:25 PM EDT	Severe Thunderstorm Warning	LWX	City of Fairfax	65 min
Aug 9, 5:25 PM EDT	Severe Thunderstorm Warning	LWX	City of Falls Church	65 min
Aug 9, 5:25 PM EDT	Severe Thunderstorm Warning	LWX	City of Alexandria	65 min

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 5.0 hours before the alert went out and 133 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: 270 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 706 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.2

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 9, 5:00 PM EDT	Severe Thunderstorm Watch	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more	5 hr
Aug 9, 5:15 PM EDT	Severe Thunderstorm Watch	SPC	Cameron, Crawford, Elk, Erie, Forest, McKean and 3 more	6 hr
Aug 9, 2:00 PM EDT	Severe Thunderstorm Watch	SPC	Albemarle, Alleghany, Amherst, Appomattox, Augusta, Bath and 14 more	5 hr
Aug 9, 7:00 PM EDT	Severe Thunderstorm Watch	SPC	Giles	6 hr
Aug 9, 10:30 AM EDT	Severe Thunderstorm Watch	SPC	Cabell, Calhoun, Clay, Jackson, Kanawha, Mason and 6 more	6 hr
Aug 9, 4:15 PM EDT	Severe Thunderstorm Watch	SPC	Jackson, Wood	6 hr

Nearby

Severe Thunderstorm Watches in Virginia, 2000 Severe Thunderstorm Watches in West Virginia, 2000 Severe Thunderstorm Watches in Maryland, 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.