Alert archive / Virginia / Tornado Watches in 2006

Tornado Watch 864

November 16, 200613 counties in North Carolina; 29 counties in Virginia

The Storm Prediction Center issued this tornado watch at Nov 16, 2006, 2:28 AM EST for 13 counties in North Carolina; 29 counties in Virginia. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Nov 16, 2006, 2:28 AM EST (07:28 UTC)
Expired
Nov 16, 2006, 10:59 AM EST
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
0.5 in
Strongest gust expected
60 kt
All 42 counties

Alamance County, NC, Caswell County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Granville County, NC, Halifax County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Person County, NC, Vance County, NC, Warren County, NC, Amelia County, VA, Appomattox County, VA, Brunswick County, VA, Buckingham County, VA, Campbell County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Colonial Heights, VA, City of Danville, VA, City of Emporia, VA, City of Hopewell, VA, City of Petersburg, VA, City of Richmond, VA, Cumberland County, VA, Dinwiddie County, VA, Goochland County, VA, Greensville County, VA, Halifax County, VA, Henrico County, VA, Lunenburg County, VA, Mecklenburg County, VA, New Kent County, VA, Nottoway County, VA, Pittsylvania County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Sussex County, VA

The radar

The Norfolk radar (KAKQ), 122 km from the middle of the area, began a volume at 07:32 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
30%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
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
50%

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, 7.5 hours before the alert went out and 168 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.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2006-11-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2006-11-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 394 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1176 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
394 m²/s²
0-3 km storm-relative helicity
496 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 15, 9:14 PM ESTMesoscale DiscussionSPCBrunswick, Columbus61 min
Nov 15, 11:58 PM ESTTornado WatchSPCAnson, Bladen, Brunswick, Chatham, Columbus, Cumberland and 18 more8 hr
Nov 16, 12:32 AM ESTMesoscale DiscussionSPCStanly, Union58 min
Nov 16, 3:17 AM ESTMesoscale DiscussionSPCAlamance, Beaufort, Bertie, Bladen, Brunswick, Camden and 46 more118 min
Nov 16, 4:38 AM ESTTornado WatchSPCBertie, Camden, Chowan, Currituck, Gates, Hertford and 2 more6 hr
Nov 16, 6:42 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Brunswick, Camden, Carteret, Chowan and 26 more93 min
Nov 16, 7:17 AM ESTMesoscale DiscussionSPCAlamance, Anson, Caswell, Chatham, Cumberland, Davidson and 22 more118 min
Nov 16, 7:51 AM ESTTornado WatchSPCBladen, Brunswick, Chatham, Columbus, Cumberland, Harnett and 13 more6 hr
Nov 16, 10:16 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 23 more59 min
Nov 16, 10:44 AM ESTTornado WatchSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 23 more7 hr
Nov 16, 3:11 PM ESTMesoscale DiscussionSPCCamden, Carteret, Chowan, Currituck, Dare, Gates and 6 more94 min

Nearby

Tornado Watches in Virginia, 2006Tornado Watches in North Carolina, 2006Every tornado watch in 2006

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.