Alert archive / Virginia / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 527
The Storm Prediction Center issued this severe thunderstorm watch at Jun 12, 2003, 12:50 PM EDT for 35 counties in North Carolina; 63 counties in Virginia. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 12, 2003, 12:50 PM EDT (16:50 UTC)
- Expired
- Jun 12, 2003, 7:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 98 counties
Alamance County, NC, Alexander County, NC, Alleghany County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Caswell County, NC, Catawba County, NC, Chatham County, NC, Cleveland County, NC, Davidson County, NC, Davie County, NC, Durham County, NC, Forsyth County, NC, Gaston County, NC, Granville County, NC, Guilford County, NC, Iredell County, NC, Lee County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Rockingham County, NC, Rowan County, NC, Rutherford County, NC, Stanly County, NC, Stokes County, NC, Surry County, NC, Vance County, NC, Wilkes County, NC, Yadkin County, NC, Albemarle County, VA, Alleghany County, VA, Amelia County, VA, Amherst County, VA, Appomattox County, VA, Augusta County, VA, Bath County, VA, Bedford County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Caroline County, VA, Carroll County, VA, Charlotte County, VA, Chesterfield County, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Covington, VA, City of Danville, VA, City of Fredericksburg, VA, City of Galax, VA, City of Harrisonburg, VA, City of Lexington, VA, City of Lynchburg, VA, City of Martinsville, VA, City of Radford, VA, City of Richmond, VA, City of Roanoke, VA, City of Salem, VA, City of Staunton, VA, City of Waynesboro, VA, Craig County, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Floyd County, VA, Fluvanna County, VA, Franklin County, VA, Goochland County, VA, Greene County, VA, Halifax County, VA, Hanover County, VA, Henry County, VA, Highland County, VA, King George County, VA, Louisa County, VA, Lunenburg County, VA, Madison County, VA, Mecklenburg County, VA, Montgomery County, VA, Nelson County, VA, Nottoway County, VA, Orange County, VA, Patrick County, VA, Pittsylvania County, VA, Powhatan County, VA, Prince Edward County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Spotsylvania County, VA, Stafford County, VA, Westmoreland County, VA
The radar
The Roanoke radar (KFCX), 65 km from the middle of the area, began a volume at 16:49 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 |
|---|---|---|---|---|
| Jun 12, 1:33 PM EDT | Severe Thunderstorm Warning | RNK | Charlotte | 27 min |
| Jun 12, 1:44 PM EDT | Severe Thunderstorm Warning | RNK | Pittsylvania, City of Danville | 61 min |
| Jun 12, 1:57 PM EDT | Severe Thunderstorm Warning | RNK | Caswell, Rockingham | 48 min |
| Jun 12, 1:58 PM EDT | Severe Thunderstorm Warning | RNK | Henry, City of Martinsville | 32 min |
| Jun 12, 2:02 PM EDT | Severe Thunderstorm Warning | RNK | Caswell, Rockingham | 43 min |
| Jun 12, 2:44 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Madison | 61 min |
| Jun 12, 4:43 PM EDT | Severe Thunderstorm Warning | LWX | King George | 47 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 4.8 hours before the alert went out and 48 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
- 931 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 627 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 3:39 PM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Alleghany, Cabarrus, Caswell, Catawba and 23 more | 2 hr |
| Jun 12, 12:02 PM EDT | Mesoscale Discussion | SPC | Albemarle, Amherst, Appomattox, Arlington, Augusta, Bedford and 42 more | 58 min |
| Jun 12, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Arlington, Clarke, Fairfax, Fauquier, Frederick, Loudoun and 11 more | 7 hr |
| Jun 12, 4:06 PM EDT | Mesoscale Discussion | SPC | Arlington, Clarke, Fairfax, Fauquier, Frederick, Loudoun and 11 more | 114 min |
Nearby
Severe Thunderstorm Watches in Virginia, 2003Severe Thunderstorm Watches in North Carolina, 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.