Alert archive / South Carolina / Tornado Watches in 2006

Tornado Watch 861

November 15, 200620 counties in South Carolina

The Storm Prediction Center issued this tornado watch at Nov 15, 2006, 9:29 PM EST for 20 counties in South Carolina. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Nov 15, 2006, 9:29 PM EST (02:29 UTC)
Expired
Nov 16, 2006, 2:30 AM EST
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt

Counties Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Chesterfield County, SC, Clarendon County, SC, Dorchester County, SC, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 44 km from the middle of the area, began a volume at 02:30 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
10%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Nov 15, 11:19 PM ESTSevere Thunderstorm WarningCAELexington41 min
Nov 15, 11:53 PM ESTFlash Flood WarningCAERichland97 min
Nov 16, 12:25 AM ESTSevere Thunderstorm WarningCHSDorchester65 min
Nov 16, 12:30 AM ESTSevere Thunderstorm WarningCAEOrangeburg45 min
Nov 16, 12:47 AM ESTSevere Thunderstorm WarningCHSBerkeley58 min
Nov 16, 12:59 AM ESTSevere Thunderstorm WarningCAEClarendon46 min
Nov 16, 1:02 AM ESTSevere Thunderstorm WarningCHSCharleston58 min
Nov 16, 1:11 AM ESTTornado WarningCAEClarendon34 min
Nov 16, 1:18 AM ESTSevere Thunderstorm WarningCAELee27 min
Nov 16, 1:29 AM ESTSevere Thunderstorm WarningCHSDorchester46 min
Nov 16, 1:33 AM ESTSevere Thunderstorm WarningCAEChesterfield27 min
Nov 16, 1:42 AM ESTSevere Thunderstorm WarningCHSBerkeley63 min
Nov 16, 1:59 AM ESTSevere Thunderstorm WarningCHSCharleston62 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

Charleston AFB, SC (KCHS), launched 00:00Z, 2.5 hours before the alert went out and 195 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, Charleston AFB, SC at 00:00Z on 2006-11-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1039 joules per kilogram.LCLEL10008507005003002001001 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, Charleston AFB, SC at 00:00Z on 2006-11-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -141 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
1039 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
582 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-141 m²/s²
0-3 km storm-relative helicity
-15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 15, 7:03 PM ESTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 45 more57 min
Nov 15, 7:08 PM ESTTornado WatchSPCAppling, Atkinson, Bacon, Brantley, Bryan, Bulloch and 20 more8 hr
Nov 15, 9:14 PM ESTMesoscale DiscussionSPCBurke61 min
Nov 16, 12:32 AM ESTMesoscale DiscussionSPCCamden, Charlton, Chatham, Glynn, McIntosh58 min
Nov 15, 11:58 PM ESTTornado WatchSPCAnson, Bladen, Brunswick, Chatham, Columbus, Cumberland and 18 more8 hr
Nov 16, 2:28 AM ESTTornado WatchSPCAlamance, Caswell, Durham, Edgecombe, Franklin, Granville and 7 more9 hr
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 South 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.