Alert archive / South Carolina / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 101, NWS Charleston, SC

June 15, 20115 counties in South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Jun 15, 2011, 10:41 PM EDT for 5 counties in South Carolina. It was in force for 64 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 15, 2011, 10:41 PM EDT (02:41 UTC)
Expired: Jun 15, 2011, 11:45 PM EDT
In force: 64 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon

Counties Allendale County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 28 km from the middle of the area, began a volume at 02:40 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 was reported inside it

Time	Report	Where	Remark
Jun 15, 11:25 PM EDT	TSTM WND DMG	1 S Cottageville, SC	OFF DUTY NWS EMPLOYEE REPORTED A LARGE 10-12 FOOT DIAMETER PINE TREE DOWN ON JACKSONBORO ROAD
Jun 15, 11:45 PM EDT	TSTM WND DMG	Walterboro, SC	PUBLIC REPORT OF QUARTER SIZE HAIL AND LARGE OAK TREE DOWN ON HUDSON MILLS ROAD.
Jun 15, 11:45 PM EDT	HAIL 1	Walterboro, SC	PUBLIC REPORT OF QUARTER SIZE HAIL AND LARGE OAK TREE DOWN ON HUDSON MILLS ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 15, 9:27 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 2.7 hours before the alert went out and 78 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: 459 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 1117 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

178 
WUUS52 KCHS 160241
SVRCHS
SCC005-029-035-049-053-160345-
/O.NEW.KCHS.SV.W.0101.110616T0241Z-110616T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
1041 PM EDT WED JUN 15 2011

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DORCHESTER COUNTY IN SOUTHEAST SOUTH CAROLINA...
  COLLETON COUNTY IN SOUTHERN SOUTH CAROLINA...
  HAMPTON COUNTY IN SOUTHERN SOUTH CAROLINA...
  JASPER COUNTY IN SOUTHERN SOUTH CAROLINA...
  SOUTHEASTERN ALLENDALE COUNTY IN WEST CENTRAL SOUTH CAROLINA...

* UNTIL 1145 PM EDT

* AT 1036 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS...ALONG A LINE EXTENDING FROM 13 MILES
  NORTHWEST OF REEVESVILLE TO SHIRLEY...MOVING SOUTHEAST AT 40 MPH.

  PREPARE NOW FOR THE FOLLOWING HAZARDS...
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH...
  HAIL UP TO QUARTER SIZE...

* SOME LOCATIONS IN THE WARNING INCLUDE...
  LAKE WARREN STATE PARK...ESTILL...SCOTIA...MILEY...VARNVILLE...
  SMOAKS...REEVESVILLE...INDIAN FIELD...SAINT GEORGE...HARLEYVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT HAIL...DOWNED TREES...LIMBS...AND POWER LINES DIRECTLY TO THE
CHARLESTON NATIONAL WEATHER SERVICE AT 1-888-383-2024.

&&

LAT...LON 3332 8049 3328 8047 3327 8037 3307 8022
      3259 8064 3267 8067 3269 8085 3241 8083
      3230 8101 3219 8099 3210 8107 3247 8119
      3260 8140 3271 8143 3306 8113 3303 8108
      3310 8095 3307 8090 3314 8089 3333 8051
TIME...MOT...LOC 0241Z 330DEG 34KT 3328 8079 3264 8134

$$

JAQ

2 follow-up statements

841 
WWUS52 KCHS 160307
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1107 PM EDT WED JUN 15 2011

SCC005-160316-
/O.CAN.KCHS.SV.W.0101.000000T0000Z-110616T0345Z/
ALLENDALE SC-
1107 PM EDT WED JUN 15 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ALLENDALE COUNTY
HAS BEEN CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
THURSDAY MORNING FOR SOUTHEASTERN GEORGIA AND SOUTHERN SOUTH
CAROLINA.

LAT...LON 3328 8047 3327 8037 3317 8030 3315 8032
      3307 8022 3259 8064 3267 8067 3269 8085
      3266 8087 3241 8083 3230 8101 3218 8099
      3210 8107 3247 8119 3256 8128 3257 8135
      3261 8140 3307 8090 3314 8089 3333 8051
TIME...MOT...LOC 0306Z 330DEG 34KT 3317 8064 3261 8092

$$

SCC029-035-049-053-160345-
/O.CON.KCHS.SV.W.0101.000000T0000Z-110616T0345Z/
DORCHESTER SC-HAMPTON SC-JASPER SC-COLLETON SC-
1107 PM EDT WED JUN 15 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR COLLETON...JASPER...HAMPTON AND DORCHESTER COUNTIES...

AT 1102 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM REEVESVILLE TO GILMANIA...OR
ALONG A LINE EXTENDING FROM SAINT GEORGE TO 6 MILES SOUTHWEST OF
YEMASSEE...MOVING SOUTHEAST AT 40 MPH.

LAW ENFORCEMENT REPORTED TREES DOWN IN ALLENDALE WITH THIS LINE OF 
STORMS.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE... 
CANADYS...SIDNEY...WALTERBORO AND HARLEYVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

TO REPORT HAIL OR WIND DAMAGE...CONTACT THE CHARLESTON NATIONAL
WEATHER SERVICE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH TWITTER USING
#WXREPORT.

&&

LAT...LON 3328 8047 3327 8037 3317 8030 3315 8032
      3307 8022 3259 8064 3267 8067 3269 8085
      3266 8087 3241 8083 3230 8101 3218 8099
      3210 8107 3247 8119 3256 8128 3257 8135
      3261 8140 3307 8090 3314 8089 3333 8051
TIME...MOT...LOC 0306Z 330DEG 34KT 3317 8064 3261 8092

$$

JAQ

608 
WWUS52 KCHS 160326
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1126 PM EDT WED JUN 15 2011

SCC029-035-049-053-160345-
/O.CON.KCHS.SV.W.0101.000000T0000Z-110616T0345Z/
DORCHESTER SC-HAMPTON SC-JASPER SC-COLLETON SC-
1126 PM EDT WED JUN 15 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR COLLETON...JASPER...EAST CENTRAL HAMPTON AND DORCHESTER
COUNTIES...

AT 1120 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM DUNCAN CHAPEL TO COTTAGEVILLE TO
TILLMAN...OR ALONG A LINE EXTENDING FROM INDIAN FIELD TO 10 MILES
SOUTHWEST OF GIVHANS FERRY STATE PARK TO 10 MILES NORTHEAST OF
SPRINGFIELD...MOVING SOUTHEAST AT 40 MPH.

LAW ENFORCEMENT REPORTED SEVERAL TREES DOWN IN ALLENDALE AND BULLOCH 
COUNTIES WITH THIS LINE OF SEVERE THUNDERSTORMS.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...ASHEPOO...
CANADYS...COTTAGEVILLE...DORCHESTER...GIVHANS...GREEN POND...
HARDEEVILLE...JEDBURG...RIDGELAND...ROUND O...SAINT GEORGE...
SWITZERLAND...AND TARBORO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
THURSDAY MORNING FOR SOUTHEASTERN GEORGIA AND SOUTHERN SOUTH
CAROLINA.

&&

LAT...LON 3328 8047 3326 8037 3317 8030 3315 8032
      3307 8022 3259 8064 3267 8067 3269 8085
      3266 8087 3241 8083 3230 8101 3218 8099
      3210 8107 3234 8113 3247 8119 3254 8126
      3294 8070 3321 8074 3333 8051
TIME...MOT...LOC 0324Z 294DEG 35KT 3325 8054 3290 8043
          3244 8113

$$

JAQ

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 15, 8:09 PM EDT	Coastal Flood Advisory	CHS		3 hr
Jun 15, 9:41 PM EDT	Severe Thunderstorm Warning	CHS	Allendale, Berkeley, Colleton, Dorchester, Hampton	64 min
Jun 15, 10:45 PM EDT	Severe Thunderstorm Warning	CHS	Hampton, Jasper	60 min
Jun 15, 11:20 PM EDT	Special Weather Statement	CHS	Beaufort	25 min
Jun 15, 11:27 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Charleston, Colleton, Dorchester, Jasper	63 min
Jun 15, 11:30 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Charleston, Dorchester	60 min
Jun 15, 11:42 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort	63 min
Jun 16, 12:10 AM EDT	Severe Thunderstorm Warning	CHS	Colleton, Dorchester	25 min
Jun 16, 12:26 AM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Charleston, Dorchester	44 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.