Alert archive / South Carolina / Tornado Watches in 2008

Tornado Watch 166

April 4, 20085 counties in Georgia; 17 counties in North Carolina; 29 counties in South Carolina

The Storm Prediction Center issued this tornado watch at Apr 4, 2008, 6:10 PM EDT for 5 counties in Georgia; 17 counties in North Carolina; 29 counties in South Carolina. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Apr 4, 2008, 6:10 PM EDT (22:10 UTC)
Expired
Apr 5, 2008, 1:00 AM EDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 51 counties

Burke County, GA, Columbia County, GA, Lincoln County, GA, McDuffie County, GA, Richmond County, GA, Anson County, NC, Cabarrus County, NC, Cleveland County, NC, Cumberland County, NC, Gaston County, NC, Harnett County, NC, Hoke County, NC, Lee County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Richmond County, NC, Robeson County, NC, Scotland County, NC, Stanly County, NC, Union 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, Darlington County, SC, Dillon County, SC, Edgefield County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Marlboro County, SC, McCormick 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 Columbia radar (KCAE), 65 km from the middle of the area, began a volume at 22:10 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
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 4, 6:33 PM EDTSevere Thunderstorm WarningCAEFairfield, Newberry42 min
Apr 4, 6:46 PM EDTSevere Thunderstorm WarningGSPChester, Laurens, Union, York59 min
Apr 4, 6:49 PM EDTTornado WarningCAEFairfield41 min
Apr 4, 7:15 PM EDTSevere Thunderstorm WarningGSPAbbeville, Anderson, Greenville, Greenwood, Laurens75 min
Apr 4, 7:29 PM EDTSevere Thunderstorm WarningCAENewberry46 min
Apr 4, 7:42 PM EDTTornado WarningCAELancaster48 min
Apr 4, 7:55 PM EDTTornado WarningGSPUnion29 min
Apr 4, 8:02 PM EDTSevere Thunderstorm WarningCAELincoln43 min
Apr 4, 8:17 PM EDTSevere Thunderstorm WarningCAEFairfield43 min
Apr 4, 8:20 PM EDTSevere Thunderstorm WarningGSPChester55 min
Apr 4, 8:33 PM EDTTornado WarningCAENewberry42 min
Apr 4, 8:35 PM EDTSevere Thunderstorm WarningGSPGreenwood, Laurens, Union35 min
Apr 4, 8:47 PM EDTSevere Thunderstorm WarningRAHAnson43 min
Apr 4, 9:00 PM EDTSevere Thunderstorm WarningCAENewberry45 min
Apr 4, 9:08 PM EDTTornado WarningGSPYork33 min
Apr 4, 9:12 PM EDTSevere Thunderstorm WarningCAESaluda33 min
Apr 4, 9:22 PM EDTTornado WarningGSPChester27 min
Apr 4, 9:28 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg, Union62 min
Apr 4, 9:31 PM EDTSevere Thunderstorm WarningCAEFairfield, Lexington, Newberry, Richland44 min
Apr 4, 9:38 PM EDTSevere Thunderstorm WarningCAELancaster56 min
Apr 4, 9:56 PM EDTSevere Thunderstorm WarningCAEFairfield19 min
Apr 4, 10:01 PM EDTSevere Thunderstorm WarningRAHAnson, Montgomery, Richmond, Stanly44 min
Apr 4, 10:15 PM EDTSevere Thunderstorm WarningRAHLee, Moore45 min
Apr 4, 10:40 PM EDTSevere Thunderstorm WarningRAHLee35 min
Apr 4, 10:45 PM EDTSevere Thunderstorm WarningRAHAnson, Montgomery, Richmond45 min
Apr 4, 10:51 PM EDTSevere Thunderstorm WarningRAHMoore39 min
Apr 4, 11:23 PM EDTSevere Thunderstorm WarningRAHHarnett, Hoke, Moore, Scotland52 min
Apr 4, 11:42 PM EDTSevere Thunderstorm WarningRAHChatham, Cumberland, Harnett, Johnston, Lee, Wake33 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 12:00Z, 10.2 hours before the alert went out and 217 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 12:00Z on 2008-04-04Temperature 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, Charleston AFB, SC at 12:00Z on 2008-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.193958Sfc1 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
510 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000
WWUS20 KWNS 042211
SEL6  
SPC WW 042211
GAZ000-NCZ000-SCZ000-050500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 166
NWS STORM PREDICTION CENTER NORMAN OK
610 PM EDT FRI APR 4 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       EAST CENTRAL GEORGIA
       SOUTHWEST AND SOUTH-CENTRAL NORTH CAROLINA
       NORTHERN AND CENTRAL SOUTH CAROLINA

EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 610 PM
UNTIL 100 AM EDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 55 MILES NORTHWEST OF
AUGUSTA GEORGIA TO 25 MILES SOUTH OF SOUTHERN PINES NORTH
CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 164...WW 165...

DISCUSSION...SURFACE WARM FRONT WILL LIKELY SHIFT SLOWLY NWD ACROSS
CENTRAL/UPSTATE SC AND SRN NC AS LOW CENTER TRACKS NEWD OUT OF NRN
GA THIS EVENING.  THIS WILL ALLOW MODERATE INSTABILITY TO REMAIN IN
PLACE INTO THE EARLY EVENING AND SUPPORT INCREASE IN THUNDERSTORM
DEVELOPMENT AS SWLY LLJ OVERSPREADS THE REGION.  LOW AND DEEP LAYER
SHEAR WILL PROVE FAVORABLE FOR SUPERCELL AND BOWING
SEGMENTS...ENHANCING THE POTENTIAL FOR LARGE HAIL/DAMAGING WINDS AND
THE THREAT OF ISOLATED TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23030.


...EVANS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 4, 1:33 PM EDTMesoscale DiscussionSPCBaldwin, Barrow, Bartow, Bibb, Bleckley, Butts and 51 more87 min
Apr 4, 2:27 PM EDTTornado WatchSPCBaldwin, Banks, Barrow, Bartow, Bibb, Butts and 75 more9 hr
Apr 4, 4:17 PM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bartow, Butts, Carroll and 38 more88 min
Apr 4, 5:39 PM EDTMesoscale DiscussionSPCBurke, Richmond66 min
Apr 4, 6:02 PM EDTMesoscale DiscussionSPCClay, Early, Quitman88 min
Apr 4, 6:48 PM EDTTornado WatchSPCBleckley, Calhoun, Chattahoochee, Clay, Crisp, Dodge and 17 more6 hr

Nearby

Tornado Watches in South Carolina, 2008Tornado Watches in North Carolina, 2008Tornado Watches in Georgia, 2008Every tornado watch in 2008

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.