Alert archive / Virginia / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 719
The Storm Prediction Center issued this severe thunderstorm watch at Jul 10, 2003, 6:50 PM EDT for Montgomery County, Maryland; 58 counties in Virginia; Hardy County, Monroe County, Pendleton County, West Virginia. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 10, 2003, 6:50 PM EDT (22:50 UTC)
- Expired
- Jul 11, 2003, 1:00 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 62 counties
Montgomery County, MD, Albemarle County, VA, Alleghany County, VA, Amherst County, VA, Appomattox County, VA, Augusta County, VA, Bath County, VA, Bedford County, VA, Bland County, VA, Botetourt County, VA, Campbell County, VA, Carroll County, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Covington, VA, City of Fairfax, VA, City of Falls Church, VA, City of Galax, VA, City of Harrisonburg, VA, City of Lexington, VA, City of Lynchburg, VA, City of Manassas, VA, City of Manassas Park, VA, City of Martinsville, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Craig County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Floyd County, VA, Fluvanna County, VA, Franklin County, VA, Giles County, VA, Grayson County, VA, Greene County, VA, Highland County, VA, Loudoun County, VA, Madison County, VA, Montgomery County, VA, Nelson County, VA, Orange County, VA, Page County, VA, Patrick County, VA, Pittsylvania County, VA, Prince William County, VA, Pulaski County, VA, Rappahannock County, VA, Roanoke County, VA, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Warren County, VA, Wythe County, VA, Hardy County, WV, Monroe County, WV, Pendleton County, WV
The radar
The Roanoke radar (KFCX), 83 km from the middle of the area, began a volume at 22:54 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 6:59 PM EDT | Tornado Warning | LWX | Culpeper | 61 min |
| Jul 10, 6:59 PM EDT | Severe Thunderstorm Warning | RNK | Botetourt | 46 min |
| Jul 10, 7:56 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier | 64 min |
| Jul 10, 9:22 PM EDT | Severe Thunderstorm Warning | LWX | Prince William, City of Manassas, City of Manassas Park | 53 min |
| Jul 10, 9:36 PM EDT | Severe Thunderstorm Warning | LWX | Fairfax, City of Fairfax, City of Falls Church | 54 min |
| Jul 10, 10:13 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier | 47 min |
| Jul 11, 12:23 AM EDT | Severe Thunderstorm Warning | LWX | Arlington, City of Falls Church | 67 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, 10.8 hours before the alert went out and 56 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.
- Mixed-layer CAPE
- 173 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 624 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 3:45 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett | 6 hr |
| Jul 10, 6:57 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 93 min |
| Jul 10, 10:20 AM EDT | Mesoscale Discussion | SPC | Lee, Scott | 85 min |
| Jul 10, 11:20 AM EDT | Severe Thunderstorm Watch | SPC | City of Bristol | 7 hr |
| Jul 10, 5:38 PM EDT | Mesoscale Discussion | SPC | Lee, Scott, City of Bristol | 37 min |
| Jul 10, 6:25 PM EDT | Mesoscale Discussion | SPC | Albemarle, Alleghany, Amelia, Amherst, Appomattox, Augusta and 51 more | 65 min |
Nearby
Severe Thunderstorm Watches in Virginia, 2003Severe Thunderstorm Watches in West Virginia, 2003Severe Thunderstorm Watches in Maryland, 2003Every severe thunderstorm 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.