Alert archive / Virginia / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 512
The Storm Prediction Center issued this severe thunderstorm watch at Jun 23, 2004, 2:20 PM EDT for 26 counties in North Carolina; 36 counties in Virginia. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2004, 2:20 PM EDT (18:20 UTC)
- Expired
- Jun 23, 2004, 9:00 PM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 62 counties
Alamance County, NC, Bertie County, NC, Camden County, NC, Caswell County, NC, Chatham County, NC, Chowan County, NC, Currituck County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Hertford County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Pasquotank County, NC, Perquimans County, NC, Person County, NC, Randolph County, NC, Rockingham County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Brunswick County, VA, Charlotte County, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Danville, VA, City of Emporia, VA, City of Franklin, VA, City of Hampton, VA, City of Hopewell, VA, City of Martinsville, VA, City of Newport News, VA, City of Norfolk, VA, City of Petersburg, VA, City of Poquoson, VA, City of Portsmouth, VA, City of Suffolk, VA, City of Virginia Beach, VA, City of Williamsburg, VA, Dinwiddie County, VA, Franklin County, VA, Greensville County, VA, Halifax County, VA, Henry County, VA, Isle of Wight County, VA, James City County, VA, Lunenburg County, VA, Mathews County, VA, Mecklenburg County, VA, Northampton County, VA, Nottoway County, VA, Pittsylvania County, VA, Prince George County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, York County, VA
The radar
The Raleigh/Durham radar (KRAX), 104 km from the middle of the area, began a volume at 18:24 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 23, 2:34 PM EDT | Severe Thunderstorm Warning | RNK | Rockingham | 41 min |
| Jun 23, 3:16 PM EDT | Severe Thunderstorm Warning | RAH | Vance, Warren | 59 min |
| Jun 23, 3:18 PM EDT | Severe Thunderstorm Warning | RNK | Caswell | 42 min |
| Jun 23, 3:45 PM EDT | Severe Thunderstorm Warning | RAH | Orange | 45 min |
| Jun 23, 4:13 PM EDT | Severe Thunderstorm Warning | RAH | Halifax | 62 min |
| Jun 23, 5:17 PM EDT | Severe Thunderstorm Warning | RAH | Halifax | 28 min |
| Jun 23, 5:54 PM EDT | Severe Thunderstorm Warning | AKQ | Gates | 21 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, 6.3 hours before the alert went out and 120 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
- -62 J/kg
- Mixed-layer LCL
- 828 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 69 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 |
|---|---|---|---|---|
| Jun 23, 12:55 PM EDT | Mesoscale Discussion | SPC | Alamance, Anson, Beaufort, Bertie, Bladen, Brunswick and 57 more | 2 hr |
| Jun 23, 4:03 PM EDT | Mesoscale Discussion | SPC | Alamance, Anson, Beaufort, Bertie, Bladen, Camden and 51 more | 87 min |
| Jun 23, 4:25 PM EDT | Severe Thunderstorm Watch | SPC | Anson, Beaufort, Carteret, Craven, Cumberland, Dare and 19 more | 5 hr |
| Jun 23, 6:30 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Camden, Chowan, Craven, Cumberland and 27 more | 90 min |
Nearby
Severe Thunderstorm Watches in Virginia, 2004Severe Thunderstorm Watches in North Carolina, 2004Every severe thunderstorm watch in 2004
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.