Alert archive / Virginia / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 803
The Storm Prediction Center issued this severe thunderstorm watch at Jul 22, 2003, 5:45 PM EDT for 5 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 22, 2003, 5:45 PM EDT (21:45 UTC)
- Expired
- Jul 22, 2003, 11:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 94 counties
Anne Arundel County, MD, Baltimore County, MD, Carroll County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Washington County, MD, Alamance County, NC, Anson County, NC, Cabarrus County, NC, Caswell County, NC, Chatham County, NC, Davidson County, NC, Davie County, NC, Durham County, NC, Forsyth County, NC, Granville County, NC, Guilford County, NC, Hoke County, NC, Lee County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Rockingham County, NC, Rowan County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Vance County, NC, York County, SC, Albemarle County, VA, Amelia County, VA, Amherst County, VA, Appomattox County, VA, Arlington County, VA, Bedford County, VA, Buckingham County, VA, Campbell County, VA, Caroline County, VA, Charlotte County, VA, Chesterfield County, VA, City of Alexandria, VA, City of Charlottesville, VA, City of Danville, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Lynchburg, VA, City of Manassas, VA, City of Manassas Park, VA, City of Martinsville, VA, City of Richmond, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Cumberland County, VA, Fairfax County, VA, Fauquier County, VA, Fluvanna County, VA, Frederick County, VA, Goochland County, VA, Greene County, VA, Halifax County, VA, Hanover County, VA, Henry County, VA, King George County, VA, Loudoun County, VA, Louisa County, VA, Lunenburg County, VA, Madison County, VA, Mecklenburg County, VA, Nelson County, VA, Nottoway County, VA, Orange County, VA, Page County, VA, Pittsylvania County, VA, Powhatan County, VA, Prince Edward County, VA, Prince William County, VA, Rappahannock County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Berkeley County, WV, Jefferson County, WV
The radar
The Roanoke radar (KFCX), 100 km from the middle of the area, began a volume at 21:46 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
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 5:51 PM EDT | Severe Thunderstorm Warning | RAH | Davidson | 54 min |
| Jul 22, 6:00 PM EDT | Severe Thunderstorm Warning | AKQ | Hanover | 25 min |
| Jul 22, 6:42 PM EDT | Severe Thunderstorm Warning | AKQ | Amelia, Chesterfield | 33 min |
| Jul 22, 6:55 PM EDT | Tornado Warning | AKQ | Hanover, King William, New Kent | 30 min |
| Jul 22, 7:10 PM EDT | Severe Thunderstorm Warning | RAH | Alamance | 50 min |
| Jul 22, 7:15 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 45 min |
| Jul 22, 7:21 PM EDT | Severe Thunderstorm Warning | RAH | Anson | 39 min |
| Jul 22, 7:29 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier | 46 min |
| Jul 22, 7:30 PM EDT | Severe Thunderstorm Warning | RAH | Orange, Person | 45 min |
| Jul 22, 7:38 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 67 min |
| Jul 22, 7:44 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 46 min |
| Jul 22, 7:59 PM EDT | Severe Thunderstorm Warning | LWX | Loudoun | 46 min |
| Jul 22, 8:08 PM EDT | Severe Thunderstorm Warning | AKQ | Mecklenburg | 32 min |
| Jul 22, 8:30 PM EDT | Severe Thunderstorm Warning | AKQ | Lunenburg, Nottoway | 30 min |
| Jul 22, 10:05 PM EDT | Flash Flood Warning | LWX | Fairfax, City of Fairfax | 3 hr |
| Jul 22, 10:19 PM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
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, 9.8 hours before the alert went out and 57 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
- 84 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 997 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 1:19 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 11 more | 86 min |
| Jul 22, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Calvert, Caroline, Dorchester, Kent, Queen Anne's, Saint Mary's and 4 more | 5 hr |
| Jul 22, 7:45 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 12 more | 90 min |
| Jul 22, 12:31 PM EDT | Mesoscale Discussion | SPC | Clay, Jackson, Macon, Transylvania | 119 min |
| Jul 22, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | Buncombe, Cherokee, Clay, Haywood, Henderson, Jackson and 4 more | 5 hr |
| Jul 22, 3:15 PM EDT | Mesoscale Discussion | SPC | Anson, Beaufort, Bertie, Bladen, Cabarrus, Chatham and 36 more | 2 hr |
| Jul 22, 3:59 PM EDT | Mesoscale Discussion | SPC | Abbeville, Aiken, Allendale, Bamberg, Barnwell, Calhoun and 16 more | 2 hr |
| Jul 22, 3:16 PM EDT | Mesoscale Discussion | SPC | Brooke, Hancock, Marshall, Ohio | 59 min |
Nearby
Severe Thunderstorm Watches in Virginia, 2003Severe Thunderstorm Watches in North Carolina, 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.