Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 111, NWS Charleston, SC

June 18, 2011Allendale County, Hampton County, South Carolina; 4 counties in Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Jun 18, 2011, 8:52 PM EDT for Allendale County, Hampton County, South Carolina; 4 counties in Georgia. It was in force for 53 min. 2 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 18, 2011, 8:52 PM EDT (00:52 UTC)
Expired
Jun 18, 2011, 9:45 PM EDT
In force
53 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon

Counties Bulloch County, GA, Candler County, GA, Jenkins County, GA, Screven County, GA, Allendale County, SC, Hampton County, SC

The radar

The Charleston,SC radar (KCLX), 75 km from the middle of the area, began a volume at 00:55 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

TimeReportWhereRemark
Jun 18, 9:21 PM EDTTSTM WND DMGAllendale, SCTREES AND POWERLINES DOWN IN VARIOUS LOCATIONS IN ALLENDALE COUNTY.
Jun 18, 9:34 PM EDTTSTM WND DMGSylvania, GAMULTIPLE REPORTS OF NUMEROUS TREES DOWN ALONG EFFINGHAM HWY AND CAPITOLA ROAD. TIME ESTIMATED BY RADAR.

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.

IssuedProductOfficeLasted
Jun 18, 7:20 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 0.9 hours before the alert went out and 171 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 2011-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1855 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 00:00Z on 2011-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
1855 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1399 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
82 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.

891 
WUUS52 KCHS 190052
SVRCHS
GAC031-043-165-251-SCC005-049-190145-
/O.NEW.KCHS.SV.W.0111.110619T0052Z-110619T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
852 PM EDT SAT JUN 18 2011

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JENKINS COUNTY IN EAST CENTRAL GEORGIA...
  SCREVEN COUNTY IN EAST CENTRAL GEORGIA...
  NORTHWESTERN BULLOCH COUNTY IN SOUTHEAST GEORGIA...
  NORTHERN CANDLER COUNTY IN SOUTHEAST GEORGIA...
  NORTHWESTERN HAMPTON COUNTY IN SOUTHERN SOUTH CAROLINA...
  ALLENDALE COUNTY IN WEST CENTRAL SOUTH CAROLINA...

* UNTIL 945 PM EDT

* AT 847 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS...ALONG A LINE EXTENDING FROM 22 MILES NORTH
  OF MILLETT TO 23 MILES WEST OF HERNDON...MOVING EAST AT 40 MPH.

  PREPARE NOW FOR THE FOLLOWING HAZARDS...
  DAMAGING WINDS IN EXCESS OF 60 MPH...

* SOME LOCATIONS IN THE WARNING INCLUDE...
  HERNDON...PERKINS...MILLETT...MARTIN...MILLEN...MILLHAVEN...
  BUTTS...

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 3252 8216 3256 8209 3255 8203 3260 8201
      3266 8209 3282 8215 3292 8209 3293 8196
      3296 8184 3292 8175 3304 8156 3310 8162
      3316 8154 3311 8136 3312 8119 3294 8101
      3244 8193 3240 8222
TIME...MOT...LOC 0051Z 286DEG 36KT 3338 8143 3282 8248

$$
1 follow-up statement
492 
WWUS52 KCHS 190114
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
914 PM EDT SAT JUN 18 2011

GAC031-043-165-251-SCC005-049-190145-
/O.CON.KCHS.SV.W.0111.000000T0000Z-110619T0145Z/
SCREVEN GA-JENKINS GA-BULLOCH GA-CANDLER GA-ALLENDALE SC-HAMPTON SC-
914 PM EDT SAT JUN 18 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR NORTHWESTERN HAMPTON...ALLENDALE...NORTHERN CANDLER...
NORTHWESTERN BULLOCH...JENKINS AND SCREVEN COUNTIES...

AT 912 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM 14 MILES NORTH OF ULMER TO 6 MILES
NORTHEAST OF BALDOCK TO MILLHAVEN TO 6 MILES SOUTHWEST OF HERNDON...
OR ALONG A LINE EXTENDING FROM DENMARK TO 7 MILES SOUTH OF BARNWELL
TO 14 MILES NORTH OF SYLVANIA TO 15 MILES NORTHEAST OF SWAINSBORO...
MOVING EAST AT 45 MPH.

DAMAGING WINDS OVER 60 MPH ARE LIKELY WITH THIS LINE OF STORMS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM EDT SUNDAY
MORNING FOR SOUTHEASTERN GEORGIA AND SOUTHERN SOUTH CAROLINA.

&&

LAT...LON 3252 8216 3256 8209 3255 8203 3260 8201
      3266 8209 3282 8215 3292 8209 3293 8196
      3296 8184 3292 8175 3304 8156 3310 8162
      3316 8154 3311 8136 3312 8119 3294 8101
      3244 8193 3240 8222
TIME...MOT...LOC 0113Z 292DEG 41KT 3329 8117 3313 8133
          3293 8169 3278 8222

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 9:12 PM EDTSevere Thunderstorm WarningCHSColleton, Dorchester63 min
Jun 18, 9:34 PM EDTSevere Thunderstorm WarningCHSAllendale, Beaufort, Colleton, Hampton, Jasper56 min
Jun 18, 10:11 PM EDTSevere Thunderstorm WarningCHSBeaufort, Charleston, Colleton, Hampton, Jasper64 min
Jun 18, 10:17 PM EDTSevere Thunderstorm WarningCHSBerkeley, Charleston, Colleton, Dorchester58 min
Jun 18, 10:37 PM EDTSevere Thunderstorm WarningCHSBeaufort, Jasper53 min
Jun 18, 11:15 PM EDTSevere Thunderstorm WarningCHSBeaufort, Jasper60 min
Jun 18, 11:27 PM EDTSevere Thunderstorm WarningCHSBeaufort, Jasper50 min
Jun 19, 4:14 AM EDTHeat AdvisoryCHSAllendale, Berkeley, Colleton, Dorchester, Hampton16 hr
Jun 18, 9:45 PM EDTSevere Thunderstorm WarningCHSBulloch, Candler, Evans, Jenkins, Tattnall60 min
Jun 18, 9:55 PM EDTSpecial Weather StatementCHSEvans, Tattnall50 min
Jun 18, 10:05 PM EDTSevere Thunderstorm WarningCHSEvans, Liberty, Long, Tattnall55 min
Jun 18, 10:25 PM EDTSpecial Marine WarningCHS95 min
Jun 18, 10:58 PM EDTSevere Thunderstorm WarningCHSLiberty, Long, McIntosh62 min
Jun 18, 11:05 PM EDTSpecial Marine WarningCHS43 min
Jun 18, 11:39 PM EDTSpecial Marine WarningCHS66 min
Jun 18, 11:59 PM EDTSpecial Marine WarningCHS102 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2011Severe Thunderstorm Warnings in South Carolina, 2011Every 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.