Alert archive / South Carolina / Tornado Watches in 2001

Tornado Watch 410

June 12, 2001Bryan County, Chatham County, Effingham County, Georgia; 13 counties in South Carolina

The Storm Prediction Center issued this tornado watch at Jun 12, 2001, 5:45 PM EDT for Bryan County, Chatham County, Effingham County, Georgia; 13 counties in South Carolina. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jun 12, 2001, 5:45 PM EDT (21:45 UTC)
Expired: Jun 12, 2001, 11:00 PM EDT
In force: 5 hr
Issued by: the Storm Prediction Center

Counties Bryan County, GA, Chatham County, GA, Effingham County, GA, Bamberg County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Clarendon County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC, Orangeburg County, SC, Sumter County, SC, Williamsburg County, SC

The radar

The Charleston,SC radar (KCLX), 29 km from the middle of the area, began a volume at 21:46 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.

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 12, 5:59 PM EDT	Tornado Warning	CHS	Colleton	31 min
Jun 12, 6:42 PM EDT	Tornado Warning	CHS	Colleton, Hampton	33 min
Jun 12, 7:14 PM EDT	Tornado Warning	CAE	Orangeburg	31 min
Jun 12, 7:16 PM EDT	Tornado Warning	CAE	Bamberg	29 min
Jun 12, 7:48 PM EDT	Tornado Warning	CAE	Orangeburg	27 min
Jun 12, 7:56 PM EDT	Tornado Warning	CHS	Jasper	34 min
Jun 12, 7:56 PM EDT	Tornado Warning	CHS	Beaufort	34 min
Jun 12, 8:30 PM EDT	Tornado Warning	CHS	Beaufort	30 min
Jun 12, 9:04 PM EDT	Tornado Warning	CHS	Beaufort, Colleton	26 min
Jun 12, 9:36 PM EDT	Tornado Warning	CHS	Beaufort	24 min
Jun 12, 9:45 PM EDT	Tornado Warning	CHS	Charleston	30 min
Jun 12, 10:56 PM EDT	Tornado Warning	CHS	Charleston	34 min

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.8 hours before the alert went out and 72 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 242 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 882 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -49 m²/s²
0-3 km storm-relative helicity: 6 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 
WWUS9 KMKC 122135
SEL0  

SEL0  
MKC WW 122132
GAZ000-SCZ000-CWZ000-130300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 410
STORM PREDICTION CENTER NORMAN OK
532 PM EDT TUE JUN 12 2001

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

   EASTERN GEORGIA                            
   EASTERN SOUTH CAROLINA                     
   COASTAL WATERS                     

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 545 PM UNTIL 1100
PM EDT.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO
70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 50 STATUTE MILES EAST AND WEST
OF A LINE FROM 20 MILES SOUTHEAST OF SAVANNAH GEORGIA TO 75 MILES
NORTH OF CHARLESTON SOUTH CAROLINA.

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 407...WW 408...WW 409...

DISCUSSION...CYCLONIC CIRCULATION OVER CENTRAL GA WITH FAVORABLE
SHEAR ENVIRONMENT FOR SMALL TORNADIC SUPERCELLS E OF CENTER. 
STORMS WILL MOVE  NWD AS ACTIVITY  SLOWLY SHIFTS EWD.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SUR+FACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 18025.


...HALES

;335,0790 315,0800 315,0814 335,0805;

Nearby

Tornado Watches in South Carolina, 2001 Tornado Watches in Georgia, 2001 Every tornado watch in 2001

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.