Alert archive / North Carolina / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 723
The Storm Prediction Center issued this severe thunderstorm watch at Jul 11, 2003, 4:10 PM EDT for 50 counties in North Carolina; Cherokee County, York County, South Carolina; 38 counties in Virginia. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 11, 2003, 4:10 PM EDT (20:10 UTC)
- Expired
- Jul 11, 2003, 8:00 PM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 90 counties
Alamance County, NC, Anson County, NC, Bertie County, NC, Cabarrus County, NC, Camden County, NC, Caswell County, NC, Catawba County, NC, Chatham County, NC, Chowan County, NC, Cleveland County, NC, Cumberland County, NC, Currituck County, NC, Davidson County, NC, Davie County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Gaston County, NC, Gates County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Iredell County, NC, Johnston County, NC, Lee County, NC, Lincoln County, NC, Martin County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Pasquotank County, NC, Perquimans County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Rockingham County, NC, Rowan County, NC, Stanly County, NC, Union County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wilson County, NC, Cherokee County, SC, York County, SC, Brunswick County, VA, Charles City County, VA, Chesterfield 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 Newport News, VA, City of Norfolk, VA, City of Petersburg, VA, City of Poquoson, VA, City of Portsmouth, VA, City of Richmond, 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 George County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, York County, VA
The radar
The Raleigh/Durham radar (KRAX), 60 km from the middle of the area, began a volume at 20:12 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
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 4:57 PM EDT | Severe Thunderstorm Warning | GSP | Cabarrus, Mecklenburg | 63 min |
| Jul 11, 5:15 PM EDT | Severe Thunderstorm Warning | GSP | Rowan | 45 min |
| Jul 11, 5:40 PM EDT | Severe Thunderstorm Warning | RAH | Stanly | 20 min |
| Jul 11, 5:49 PM EDT | Severe Thunderstorm Warning | RAH | Davidson | 26 min |
| Jul 11, 5:58 PM EDT | Severe Thunderstorm Warning | RAH | Montgomery | 32 min |
| Jul 11, 6:02 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Harnett | 28 min |
| Jul 11, 6:08 PM EDT | Severe Thunderstorm Warning | RAH | Johnston | 52 min |
| Jul 11, 6:16 PM EDT | Severe Thunderstorm Warning | RAH | Moore | 59 min |
| Jul 11, 6:58 PM EDT | Flash Flood Warning | GSP | Mecklenburg, Union | 3 hr |
| Jul 11, 7:31 PM EDT | Severe Thunderstorm Warning | AKQ | Isle of Wight, Southampton, City of Franklin | 29 min |
| Jul 11, 7:52 PM EDT | Severe Thunderstorm Warning | RAH | Edgecombe | 23 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, 8.2 hours before the alert went out and 84 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
- 24 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 870 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 9:29 PM EDT | Mesoscale Discussion | SPC | Alleghany, Ashe, Avery, Buncombe, Haywood, Jackson and 5 more | 31 min |
| Jul 11, 12:45 PM EDT | Mesoscale Discussion | SPC | Anson, Beaufort, Bertie, Bladen, Camden, Chatham and 41 more | 2 hr |
| Jul 11, 1:55 PM EDT | Severe Thunderstorm Watch | SPC | Anson, Scotland, Union | 6 hr |
| Jul 11, 4:49 PM EDT | Mesoscale Discussion | SPC | Scotland | 116 min |
| Jul 11, 6:34 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 42 more | 86 min |
| Jul 11, 7:05 PM EDT | Severe Thunderstorm Watch | SPC | Beaufort, Bertie, Bladen, Brunswick, Camden, Chowan and 22 more | 6 hr |
| Jul 10, 10:37 PM EDT | Mesoscale Discussion | SPC | Albemarle, Amherst, Appomattox, Arlington, Bedford, Buckingham and 33 more | 83 min |
Nearby
Severe Thunderstorm Watches in North Carolina, 2003Severe Thunderstorm Watches in Virginia, 2003Severe Thunderstorm Watches in South 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.