Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 150, NWS Charleston, SC

July 11, 2012Screven County, Georgia; Allendale County, Hampton County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Jul 11, 2012, 4:53 PM EDT for Screven County, Georgia; Allendale County, Hampton County, South Carolina. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 11, 2012, 4:53 PM EDT (20:53 UTC)
Expired: Jul 11, 2012, 6:00 PM EDT
In force: 67 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon

Counties Screven County, GA, Allendale County, SC, Hampton County, SC

The radar

The Charleston,SC radar (KCLX), 58 km from the middle of the area, began a volume at 20:52 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.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.9 hours before the alert went out and 140 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: 2022 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 54 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.

567 
WUUS52 KCHS 112053
SVRCHS
GAC251-SCC005-049-112200-
/O.NEW.KCHS.SV.W.0150.120711T2053Z-120711T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
453 PM EDT WED JUL 11 2012

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SCREVEN COUNTY IN SOUTHEAST GEORGIA...
  ALLENDALE COUNTY IN SOUTHEAST SOUTH CAROLINA...
  NORTHWESTERN HAMPTON COUNTY IN SOUTHEAST SOUTH CAROLINA...

* UNTIL 600 PM EDT

* AT 454 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS...ALONG A LINE EXTENDING FROM BARTON TO 7
  MILES NORTHEAST OF HUNTERS...MOVING NORTH AT 5 MPH.

  PREPARE NOW FOR THE FOLLOWING HAZARDS...
  DAMAGING WINDS IN EXCESS OF 60 MPH...
  HAIL UP TO QUARTER SIZE...

* SOME LOCATIONS IN THE WARNING INCLUDE...
  GIFFORD...LURAY...BARTON...BRUNSON...FAIRFAX...ALLENDALE...
  SEIGLING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE SHELTER AS THUNDERSTORMS APPROACH.

REPORT HAIL...DOWNED TREES...LIMBS...AND POWER LINES DIRECTLY TO THE
CHARLESTON NATIONAL WEATHER SERVICE AT 1-888-383-2024...WHEN IT IS
SAFE TO DO SO.

&&

LAT...LON 3304 8157 3305 8157 3308 8162 3310 8162
      3316 8154 3311 8136 3312 8120 3285 8115
      3259 8150 3291 8176
TIME...MOT...LOC 2054Z 190DEG 6KT 3288 8131 3271 8145

$$

4 follow-up statements

168 
WWUS52 KCHS 112110
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
510 PM EDT WED JUL 11 2012

GAC251-SCC005-049-112200-
/O.CON.KCHS.SV.W.0150.000000T0000Z-120711T2200Z/
SCREVEN GA-ALLENDALE SC-HAMPTON SC-
510 PM EDT WED JUL 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR NORTHWESTERN HAMPTON...ALLENDALE AND SCREVEN COUNTIES...

AT 510 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM
ROUSE TO GREEN HILL...MOVING NORTH AT 5 MPH.

PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
HAIL UP TO QUARTER SIZE...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BURTONS
FERRY LANDING...HILLTONIA...HUNTERS...MILLHAVEN...ALLENDALE...
APPLETON...BARTON...BRUNSON...FAIRFAX...GIFFORD...LAKE WARREN STATE
PARK...LURAY...MARTIN...MILLETT...SEIGLING...SYCAMORE AND ULMER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. MOVE INDOORS
IMMEDIATELY. IF THERE IS NO SAFE SHELTER AVAILABLE...STAY AWAY FROM
ISOLATED HIGH OBJECTS AND BODIES OF WATER. IF YOU CAN HEAR THUNDER...
YOU ARE WITHIN STRIKING DISTANCE.

TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.

&&

LAT...LON 3304 8157 3305 8157 3308 8162 3310 8162
      3316 8154 3311 8136 3312 8120 3285 8115
      3259 8150 3291 8176
TIME...MOT...LOC 2110Z 184DEG 4KT 3289 8131 3275 8151

$$

148 
WWUS52 KCHS 112130
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
530 PM EDT WED JUL 11 2012

SCC049-112140-
/O.CAN.KCHS.SV.W.0150.000000T0000Z-120711T2200Z/
HAMPTON SC-
530 PM EDT WED JUL 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HAMPTON COUNTY
HAS BEEN CANCELLED...

LAT...LON 3304 8157 3310 8162 3316 8154 3311 8136
      3312 8120 3298 8117 3294 8123 3291 8123
      3289 8127 3284 8126 3277 8134 3274 8141
      3270 8143 3264 8154 3291 8176
TIME...MOT...LOC 2130Z 184DEG 4KT 3305 8122 3277 8151

$$

GAC251-SCC005-112200-
/O.CON.KCHS.SV.W.0150.000000T0000Z-120711T2200Z/
SCREVEN GA-ALLENDALE SC-
530 PM EDT WED JUL 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR ALLENDALE AND SCREVEN COUNTIES...

AT 530 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM
SYCAMORE TO 11 MILES SOUTHEAST OF BASCOM...MOVING NORTH AT 5 MPH.

PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
HAIL UP TO QUARTER SIZE...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BURTONS
FERRY LANDING...HILLTONIA...MILLHAVEN...ALLENDALE...APPLETON...
BARTON...FAIRFAX...MARTIN...MILLETT...SEIGLING...SYCAMORE AND ULMER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.

&&

LAT...LON 3304 8157 3310 8162 3316 8154 3311 8136
      3312 8120 3298 8117 3294 8123 3291 8123
      3289 8127 3284 8126 3277 8134 3274 8141
      3270 8143 3264 8154 3291 8176
TIME...MOT...LOC 2130Z 184DEG 4KT 3305 8122 3277 8151

$$

989 
WWUS52 KCHS 112136
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
536 PM EDT WED JUL 11 2012

SCC005-112146-
/O.CAN.KCHS.SV.W.0150.000000T0000Z-120711T2200Z/
ALLENDALE SC-
536 PM EDT WED JUL 11 2012

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

LAT...LON 3302 8159 3304 8156 3304 8153 3301 8149
      3295 8151 3290 8147 3288 8148 3287 8145
      3285 8146 3284 8142 3277 8142 3277 8143
      3275 8140 3270 8159 3291 8176
TIME...MOT...LOC 2136Z 118DEG 9KT 3283 8157

$$

GAC251-112200-
/O.CON.KCHS.SV.W.0150.000000T0000Z-120711T2200Z/
SCREVEN GA-
536 PM EDT WED JUL 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR NORTHERN SCREVEN COUNTY...

AT 536 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM 6 MILES EAST OF BASCOM...MOVING
NORTHWEST AT 10 MPH.

PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
HAIL UP TO QUARTER SIZE...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BURTONS
FERRY LANDING...HILLTONIA AND MILLHAVEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. MOVE INDOORS
IMMEDIATELY. IF THERE IS NO SAFE SHELTER AVAILABLE...STAY AWAY FROM
ISOLATED HIGH OBJECTS AND BODIES OF WATER. IF YOU CAN HEAR THUNDER...
YOU ARE WITHIN STRIKING DISTANCE.

TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.

&&

LAT...LON 3302 8159 3304 8156 3304 8153 3301 8149
      3295 8151 3290 8147 3288 8148 3287 8145
      3285 8146 3284 8142 3277 8142 3277 8143
      3275 8140 3270 8159 3291 8176
TIME...MOT...LOC 2136Z 118DEG 9KT 3283 8157

$$

340 
WWUS52 KCHS 112155
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
555 PM EDT WED JUL 11 2012

GAC251-112205-
/O.EXP.KCHS.SV.W.0150.000000T0000Z-120711T2200Z/
SCREVEN GA-
555 PM EDT WED JUL 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SCREVEN COUNTY WILL
EXPIRE AT 600 PM EDT...

AT 555 PM EDT...RADAR INDICATED THAT THE THUNDERSTORM WHICH PROMPTED
THE WARNING HAD WEAKENED...THUS THE SEVERE THUNDERSTORM WARNING HAS
BEEN ALLOWED TO EXPIRE.

ALTHOUGH THE SEVERE THUNDERSTORM WARNING IS NO LONGER IN EFFECT...
THUNDERSTORMS ARE STILL CAPABLE OF PRODUCING GUSTY WINDS...SMALL
HAIL...FREQUENT LIGHTNING AND HEAVY RAINFALL. THE SAFEST COURSE OF
ACTION IS TO REMAIN INDOORS UNTIL THE STORMS HAVE PASSED.

TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.

LAT...LON 3302 8159 3304 8156 3304 8153 3301 8149
      3295 8151 3290 8147 3288 8148 3287 8145
      3285 8146 3284 8142 3277 8142 3277 8143
      3275 8140 3270 8159 3291 8176
TIME...MOT...LOC 2155Z 118DEG 9KT 3285 8162

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 12:48 PM EDT	Special Marine Warning	CHS		57 min
Jul 11, 2:46 PM EDT	Special Weather Statement	CHS	Chatham	44 min
Jul 11, 3:25 PM EDT	Special Weather Statement	CHS	Effingham	50 min
Jul 11, 3:35 PM EDT	Special Weather Statement	CHS	Bryan	40 min
Jul 11, 4:16 PM EDT	Special Weather Statement	CHS	Effingham	29 min
Jul 11, 4:39 PM EDT	Special Weather Statement	CHS	Evans	51 min
Jul 11, 4:50 PM EDT	Special Weather Statement	CHS	Screven	40 min
Jul 11, 5:25 PM EDT	Special Weather Statement	CHS	Candler, Evans, Jenkins	50 min
Jul 11, 6:13 PM EDT	Special Weather Statement	CHS	Candler, Jenkins	47 min
Jul 10, 8:18 PM EDT	Special Weather Statement	CHS	Colleton	27 min
Jul 10, 9:21 PM EDT	Special Weather Statement	CHS	Allendale	24 min
Jul 10, 9:36 PM EDT	Special Weather Statement	CHS	Allendale	24 min
Jul 11, 12:31 PM EDT	Severe Thunderstorm Warning	CHS	Charleston	59 min
Jul 11, 12:51 PM EDT	Special Weather Statement	CHS	Charleston	24 min
Jul 11, 12:58 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Charleston	62 min
Jul 11, 1:03 PM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston	87 min
Jul 11, 1:10 PM EDT	Flash Flood Warning	CHS	Berkeley, Charleston	2 hr
Jul 11, 1:21 PM EDT	Special Weather Statement	CHS	Beaufort	39 min
Jul 11, 2:09 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	56 min
Jul 11, 2:14 PM EDT	Special Weather Statement	CHS	Beaufort, Jasper	31 min
Jul 11, 2:16 PM EDT	Special Weather Statement	CHS	Jasper	29 min
Jul 11, 2:27 PM EDT	Special Weather Statement	CHS	Charleston	33 min
Jul 11, 2:48 PM EDT	Special Weather Statement	CHS	Hampton	27 min
Jul 11, 3:18 PM EDT	Special Weather Statement	CHS	Berkeley	42 min
Jul 11, 3:43 PM EDT	Severe Thunderstorm Warning	CHS	Charleston, Colleton, Dorchester	51 min
Jul 11, 3:53 PM EDT	Special Weather Statement	CHS	Colleton	52 min
Jul 11, 3:59 PM EDT	Special Weather Statement	CHS	Hampton	31 min
Jul 11, 4:05 PM EDT	Special Weather Statement	CHS	Colleton	40 min
Jul 11, 4:14 PM EDT	Special Weather Statement	CHS	Dorchester	46 min
Jul 11, 4:17 PM EDT	Severe Thunderstorm Warning	CHS	Colleton	58 min
Jul 11, 4:46 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Colleton, Dorchester	41 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012 Severe Thunderstorm Warnings in Georgia, 2012 Every severe thunderstorm warning in 2012

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.