Alert archive / Virginia / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 569
The Storm Prediction Center issued this severe thunderstorm watch at Jul 4, 1997, 10:00 PM EDT for 24 counties in North Carolina; 39 counties in Virginia. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 4, 1997, 10:00 PM EDT (02:00 UTC)
- Expired
- Jul 5, 1997, 2:00 AM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 63 counties
Bertie County, NC, Camden 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, Halifax County, NC, Hertford County, NC, Lee County, NC, Martin County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Pasquotank County, NC, Perquimans County, NC, Person County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wilson County, NC, Amelia County, VA, Brunswick County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Franklin, VA, City of Hampton, VA, City of Hopewell, 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, Gloucester County, VA, Greensville County, VA, Halifax County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, Lunenburg County, VA, Mathews County, VA, Mecklenburg County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Nottoway County, VA, Prince Edward County, VA, Prince George County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, York County, VA
The radar
The Norfolk radar (KAKQ), 80 km from the middle of the area, began a volume at 02:04 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
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 11:17 PM EDT | Severe Thunderstorm Warning | RAH | Durham, Wake | 43 min |
| Jul 4, 11:46 PM EDT | Severe Thunderstorm Warning | RAH | Franklin | 44 min |
| Jul 5, 12:05 AM EDT | Severe Thunderstorm Warning | RAH | Nash | 25 min |
| Jul 5, 12:21 AM EDT | Severe Thunderstorm Warning | RAH | Halifax | 54 min |
| Jul 5, 12:35 AM EDT | Severe Thunderstorm Warning | RAH | Wilson | 25 min |
| Jul 5, 12:44 AM EDT | Severe Thunderstorm Warning | AKQ | Bertie, Northampton | 51 min |
| Jul 5, 1:30 AM EDT | Severe Thunderstorm Warning | AKQ | Chowan | 35 min |
| Jul 5, 1:58 AM EDT | Severe Thunderstorm Warning | AKQ | Perquimans | 32 min |
The nearest sounding before it
Roanoke, VA (KRNK), launched 00:00Z, 2.0 hours before the alert went out and 158 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
- 322 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1636 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.3
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 |
|---|---|---|---|---|
| Jul 5, 1:00 AM EDT | Severe Thunderstorm Watch | SPC | Beaufort, Bertie, Camden, Chowan, Craven, Currituck and 15 more | 4 hr |
| Jul 5, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | Beaufort, Bertie, Bladen, Camden, Carteret, Chowan and 36 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Virginia, 1997Severe Thunderstorm Watches in North Carolina, 1997Every severe thunderstorm watch in 1997
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.