Alert archive / North Carolina / Tornado Watches in 2010

Tornado Watch 760

November 30, 2010Burke County, Richmond County, Georgia; 31 counties in North Carolina; 24 counties in South Carolina

The Storm Prediction Center issued this tornado watch at Nov 30, 2010, 9:56 PM EST for Burke County, Richmond County, Georgia; 31 counties in North Carolina; 24 counties in South Carolina. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Nov 30, 2010, 9:56 PM EST (02:56 UTC)
Expired
Dec 1, 2010, 4:00 AM EST
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
0.5 in
Strongest gust expected
60 kt
All 57 counties

Burke County, GA, Richmond County, GA, Alamance County, NC, Alexander County, NC, Alleghany County, NC, Anson County, NC, Cabarrus County, NC, Caswell County, NC, Catawba County, NC, Chatham County, NC, Cleveland County, NC, Davidson County, NC, Davie County, NC, Forsyth County, NC, Gaston County, NC, Guilford County, NC, Iredell County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Rockingham County, NC, Rowan County, NC, Stanly County, NC, Stokes County, NC, Surry County, NC, Union County, NC, Wilkes County, NC, Yadkin County, NC, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Edgefield County, SC, Fairfield County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Spartanburg County, SC, Sumter County, SC, Union County, SC, York County, SC

The radar

The Greer radar (KGSP), 119 km from the middle of the area, began a volume at 02:56 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
20%
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
60%

Warnings issued inside it

18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Nov 30, 9:58 PM ESTSevere Thunderstorm WarningCAEBurke, Richmond47 min
Nov 30, 10:14 PM ESTTornado WarningGSPCleveland31 min
Nov 30, 10:35 PM ESTTornado WarningGSPCleveland15 min
Nov 30, 10:38 PM ESTTornado WarningGSPChester, Union, York52 min
Nov 30, 10:46 PM ESTSevere Thunderstorm WarningCAEBurke59 min
Nov 30, 11:29 PM ESTSevere Thunderstorm WarningGSPGaston, Iredell, Lincoln, Mecklenburg46 min
Nov 30, 11:43 PM ESTSevere Thunderstorm WarningCAEChesterfield, Fairfield, Kershaw, Lancaster, Lexington, Richland62 min
Dec 1, 12:36 AM ESTSevere Thunderstorm WarningRNKStokes, Surry39 min
Dec 1, 12:44 AM ESTSevere Thunderstorm WarningRAHAnson, Montgomery, Richmond, Stanly61 min
Dec 1, 12:49 AM ESTSevere Thunderstorm WarningRAHDavidson, Forsyth, Guilford, Randolph56 min
Dec 1, 1:34 AM ESTSevere Thunderstorm WarningRNKCaswell, Rockingham, Stokes57 min
Dec 1, 1:38 AM ESTSevere Thunderstorm WarningRAHAlamance, Chatham, Guilford, Randolph52 min
Dec 1, 1:41 AM ESTSevere Thunderstorm WarningRAHAnson, Montgomery, Moore, Richmond64 min
Dec 1, 1:48 AM ESTTornado WarningRNKRockingham42 min
Dec 1, 2:29 AM ESTSevere Thunderstorm WarningRAHAlamance, Chatham, Randolph61 min
Dec 1, 2:39 AM ESTSevere Thunderstorm WarningRAHOrange, Person81 min
Dec 1, 2:45 AM ESTSevere Thunderstorm WarningRAHHoke, Montgomery, Moore, Richmond, Scotland60 min
Dec 1, 3:26 AM ESTSevere Thunderstorm WarningRAHChatham, Lee49 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, 2.9 hours before the alert went out and 139 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 2010-12-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 39 joules per kilogram.LCLLFCEL10008507005003002001001 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 2010-12-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 407 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
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

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 30, 7:47 PM ESTMesoscale DiscussionSPCColumbia, Glascock, Hancock, Jefferson, Lincoln, McDuffie and 6 more88 min
Nov 30, 9:29 PM ESTMesoscale DiscussionSPCBurke, Richmond91 min
Dec 1, 12:48 AM ESTMesoscale DiscussionSPCAlamance, Caswell, Chatham, Davidson, Durham, Forsyth and 13 more117 min
Dec 1, 1:02 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Carteret, Columbus and 28 more118 min
Dec 1, 2:13 AM ESTTornado WatchSPCAlamance, Bertie, Bladen, Brunswick, Chatham, Columbus and 36 more8 hr
Dec 1, 4:25 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Chowan, Columbus and 29 more2 hr
Dec 1, 5:18 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 27 more117 min
Dec 1, 6:12 AM ESTTornado WatchSPCBeaufort, Camden, Carteret, Chowan, Currituck, Dare and 7 more4 hr
Dec 1, 7:51 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 12 more84 min

Nearby

Tornado Watches in North Carolina, 2010Tornado Watches in South Carolina, 2010Tornado Watches in Georgia, 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.