Alert archive / Virginia / Tornado Watches in 2010
Tornado Watch 761
The Storm Prediction Center issued this tornado watch at Dec 1, 2010, 2:13 AM EST for 42 counties in North Carolina; 8 counties in South Carolina; 49 counties in Virginia. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 1, 2010, 2:13 AM EST (07:13 UTC)
- Expired
- Dec 1, 2010, 10:00 AM EST
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
All 99 counties
Alamance County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Chatham County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Granville County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, New Hanover County, NC, Northampton County, NC, Onslow County, NC, Orange County, NC, Pender County, NC, Person County, NC, Pitt County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC, Albemarle County, VA, Amelia County, VA, Brunswick County, VA, Caroline County, VA, Charles City County, VA, Chesterfield County, VA, City of Charlottesville, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Franklin, VA, City of Fredericksburg, VA, City of Hopewell, VA, City of Petersburg, VA, City of Richmond, VA, City of Williamsburg, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Fluvanna County, VA, Gloucester County, VA, Goochland County, VA, Greensville County, VA, Hanover County, VA, Henrico County, VA, James City County, VA, King and Queen County, VA, King George County, VA, King William County, VA, Lancaster County, VA, Louisa County, VA, Lunenburg County, VA, Mecklenburg County, VA, Middlesex County, VA, Nelson County, VA, New Kent County, VA, Northumberland County, VA, Nottoway County, VA, Orange County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Richmond County, VA, Southampton County, VA, Spotsylvania County, VA, Stafford County, VA, Surry County, VA, Sussex County, VA, Westmoreland County, VA, York County, VA
The radar
The Raleigh/Durham radar (KRAX), 74 km from the middle of the area, began a volume at 07:15 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 1, 2:29 AM EST | Severe Thunderstorm Warning | RAH | Alamance, Chatham, Randolph | 61 min |
| Dec 1, 2:31 AM EST | Tornado Warning | ILM | Bladen, Columbus | 29 min |
| Dec 1, 2:39 AM EST | Severe Thunderstorm Warning | RAH | Orange, Person | 81 min |
| Dec 1, 2:43 AM EST | Flash Flood Warning | LWX | Albemarle, Augusta, Nelson, City of Charlottesville, City of Staunton, City of Waynesboro | 6 hr |
| Dec 1, 2:45 AM EST | Severe Thunderstorm Warning | RAH | Hoke, Montgomery, Moore, Richmond, Scotland | 60 min |
| Dec 1, 2:55 AM EST | Severe Thunderstorm Warning | LWX | Albemarle, Augusta, Nelson, City of Charlottesville | 65 min |
| Dec 1, 3:04 AM EST | Severe Thunderstorm Warning | RAH | Sampson | 26 min |
| Dec 1, 3:18 AM EST | Severe Thunderstorm Warning | MHX | Duplin | 42 min |
| Dec 1, 3:21 AM EST | Tornado Warning | LWX | Albemarle, Nelson, City of Charlottesville | 24 min |
| Dec 1, 3:26 AM EST | Severe Thunderstorm Warning | RAH | Chatham, Lee | 49 min |
| Dec 1, 3:28 AM EST | Severe Thunderstorm Warning | LWX | Albemarle, Augusta, Culpeper, Greene, Madison, Orange and 3 more | 47 min |
| Dec 1, 3:45 AM EST | Severe Thunderstorm Warning | AKQ | Caroline, Cumberland, Fluvanna, Goochland, Hanover, Louisa | 45 min |
| Dec 1, 3:52 AM EST | Severe Thunderstorm Warning | AKQ | Amelia, Cumberland, Lunenburg, Mecklenburg, Nottoway, Powhatan and 1 more | 53 min |
| Dec 1, 4:06 AM EST | Severe Thunderstorm Warning | LWX | Albemarle, Culpeper, Greene, Madison, Orange, Rappahannock and 1 more | 54 min |
| Dec 1, 4:26 AM EST | Severe Thunderstorm Warning | RAH | Durham, Franklin, Granville, Wake | 49 min |
| Dec 1, 4:32 AM EST | Severe Thunderstorm Warning | AKQ | Fluvanna, Louisa | 28 min |
| Dec 1, 4:34 AM EST | Flash Flood Warning | LWX | Culpeper, Fauquier, Greene, Madison, Orange, Rappahannock | 6 hr |
| Dec 1, 4:44 AM EST | Severe Thunderstorm Warning | RAH | Granville, Vance | 46 min |
| Dec 1, 4:45 AM EST | Severe Thunderstorm Warning | AKQ | Amelia, Caroline, Chesterfield, Dinwiddie, Goochland, Hanover and 9 more | 45 min |
| Dec 1, 4:47 AM EST | Severe Thunderstorm Warning | AKQ | Brunswick, Dinwiddie, Lunenburg, Mecklenburg, Nottoway | 58 min |
| Dec 1, 4:58 AM EST | Severe Thunderstorm Warning | LWX | Culpeper, Fairfax, Fauquier, Loudoun, Orange, Prince William and 6 more | 47 min |
| Dec 1, 5:12 AM EST | Severe Thunderstorm Warning | RAH | Warren | 48 min |
| Dec 1, 5:29 AM EST | Severe Thunderstorm Warning | AKQ | Amelia, Caroline, Chesterfield, Dinwiddie, Goochland, Hanover and 8 more | 46 min |
| Dec 1, 5:44 AM EST | Severe Thunderstorm Warning | AKQ | Northampton | 61 min |
| Dec 1, 6:16 AM EST | Severe Thunderstorm Warning | AKQ | Caroline, Charles City, Chesterfield, Dinwiddie, Essex, Hanover and 14 more | 44 min |
| Dec 1, 6:53 AM EST | Severe Thunderstorm Warning | AKQ | Caroline, Essex, King and Queen, King William, Richmond, Westmoreland | 35 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 00:00Z, 7.2 hours before the alert went out and 142 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
- 39 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 486 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 407 m²/s²
- 0-3 km storm-relative helicity
- 448 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 |
|---|---|---|---|---|
| Nov 30, 7:47 PM EST | Mesoscale Discussion | SPC | Alexander, Alleghany, Avery, Burke, Caldwell, Catawba and 11 more | 88 min |
| Nov 30, 9:29 PM EST | Mesoscale Discussion | SPC | Alamance, Anson, Cabarrus, Caswell, Catawba, Chatham and 23 more | 91 min |
| Nov 30, 9:56 PM EST | Tornado Watch | SPC | Alamance, Alexander, Alleghany, Anson, Cabarrus, Caswell and 25 more | 6 hr |
| Dec 1, 12:48 AM EST | Mesoscale Discussion | SPC | Alamance, Caswell, Chatham, Davidson, Durham, Forsyth and 13 more | 117 min |
| Dec 1, 1:02 AM EST | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Brunswick, Carteret, Columbus and 28 more | 118 min |
| Dec 1, 4:25 AM EST | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Brunswick, Chowan, Columbus and 29 more | 2 hr |
| Dec 1, 5:18 AM EST | Mesoscale Discussion | SPC | Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 27 more | 117 min |
| Dec 1, 6:12 AM EST | Tornado Watch | SPC | Beaufort, Camden, Carteret, Chowan, Currituck, Dare and 7 more | 4 hr |
| Dec 1, 7:51 AM EST | Mesoscale Discussion | SPC | Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 12 more | 84 min |
| Dec 1, 3:48 AM EST | Tornado Watch | SPC | Arlington, Clarke, Culpeper, Fairfax, Fauquier, Frederick and 14 more | 7 hr |
Nearby
Tornado Watches in Virginia, 2010Tornado Watches in North Carolina, 2010Tornado Watches in South Carolina, 2010Every tornado watch in 2010
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.