Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 206, NWS Charleston, SC

July 30, 20124 counties in Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Jul 30, 2012, 6:51 PM EDT for 4 counties in Georgia. It was in force for 54 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 30, 2012, 6:51 PM EDT (22:51 UTC)
Expired
Jul 30, 2012, 7:45 PM EDT
In force
54 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon

Counties Bryan County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA

The radar

The Jacksonville radar (KJAX), 120 km from the middle of the area, began a volume at 22:52 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

Jacksonville, FL (KJAX), launched 12:00Z, 10.9 hours before the alert went out and 118 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, Jacksonville, FL at 12:00Z on 2012-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2934 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, Jacksonville, FL at 12:00Z on 2012-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.1939Sfc1 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
2934 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
584 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
24 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.

282 
WUUS52 KCHS 302251
SVRCHS
GAC029-179-183-191-302345-
/O.NEW.KCHS.SV.W.0206.120730T2251Z-120730T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
651 PM EDT MON JUL 30 2012

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BRYAN COUNTY IN SOUTHEAST GEORGIA...
  LIBERTY COUNTY IN SOUTHEAST GEORGIA...
  LONG COUNTY IN SOUTHEAST GEORGIA...
  MCINTOSH COUNTY IN SOUTHEAST GEORGIA...

* UNTIL 745 PM EDT

* AT 652 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS...ALONG A LINE EXTENDING FROM 6 MILES NORTH OF
  DONALD TO 6 MILES SOUTHEAST OF KELLER...MOVING SOUTHWEST AT 20 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...
  HINESVILLE...FLEMINGTON...MIDWAY...SUNBURY...GUM BRANCH...
  ALLENHURST...CROSSROADS...WALTHOURVILLE...

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 3132 8136 3130 8142 3136 8154 3143 8161
      3147 8162 3156 8170 3158 8170 3166 8185
      3179 8198 3197 8186 3189 8116 3186 8115
      3182 8118 3171 8115 3150 8118 3140 8125
      3138 8125 3137 8127 3130 8126 3129 8129
TIME...MOT...LOC 2252Z 036DEG 16KT 3189 8184 3177 8119

$$
3 follow-up statements
644 
WWUS52 KCHS 302308
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
708 PM EDT MON JUL 30 2012

GAC029-179-183-191-302345-
/O.CON.KCHS.SV.W.0206.000000T0000Z-120730T2345Z/
LIBERTY GA-BRYAN GA-LONG GA-MCINTOSH GA-
708 PM EDT MON JUL 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR MCINTOSH...LONG...SOUTHEASTERN BRYAN AND SOUTHERN LIBERTY
COUNTIES...

AT 709 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM
DONALD TO HALFMOON LANDING...MOVING SOUTHWEST AT 20 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
ALLENHURST...BLACKBEARD ISLAND...CARNIGAN...COX...CRESCENT...
DARIEN...DONALD...EULONIA...FLEMINGTON...FORT STEWART...GUM BRANCH...
HALFMOON LANDING...HARRIS NECK...HINESVILLE...JONES...LUDOWICI...
MCINTOSH...MERIDIAN...PINE HARBOR...RETREAT...RICEBORO...
RIDGEVILLE...SAPELO ISLAND...SHELLMAN BLUFF...SOUTH NEWPORT...
SUNBURY...TIBET...TOWNSEND...VALONA...WALTHOURVILLE...WOLF ISLAND...
CROSSROADS AND MIDWAY.

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 3132 8136 3130 8142 3133 8144 3136 8154
      3156 8170 3158 8170 3166 8185 3173 8192
      3175 8192 3179 8198 3196 8184 3180 8121
      3171 8115 3150 8118 3137 8127 3130 8126
      3129 8129
TIME...MOT...LOC 2309Z 051DEG 16KT 3187 8189 3172 8130

$$
671 
WWUS52 KCHS 302330
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
730 PM EDT MON JUL 30 2012

GAC029-179-191-302340-
/O.CAN.KCHS.SV.W.0206.000000T0000Z-120730T2345Z/
LIBERTY GA-BRYAN GA-MCINTOSH GA-
730 PM EDT MON JUL 30 2012

...THE SEVERE THUNDERSTORM WARNING FOR MCINTOSH...SOUTHEASTERN BRYAN
AND SOUTHERN LIBERTY COUNTIES HAS BEEN CANCELLED...

LAT...LON 3181 8195 3182 8195 3187 8191 3192 8186
      3172 8167 3163 8176 3166 8185 3171 8188
      3172 8191 3175 8192 3180 8197
TIME...MOT...LOC 2330Z 050DEG 17KT 3183 8193 3171 8182

$$

GAC183-302345-
/O.CON.KCHS.SV.W.0206.000000T0000Z-120730T2345Z/
LONG GA-
730 PM EDT MON JUL 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR WESTERN LONG COUNTY...

AT 730 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM
DONALD TO LUDOWICI...MOVING SOUTHWEST AT 20 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...DONALD AND
LUDOWICI.

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 3181 8195 3182 8195 3187 8191 3192 8186
      3172 8167 3163 8176 3166 8185 3171 8188
      3172 8191 3175 8192 3180 8197
TIME...MOT...LOC 2330Z 050DEG 17KT 3183 8193 3171 8182

$$
563 
WWUS52 KCHS 302342
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
742 PM EDT MON JUL 30 2012

GAC183-302353-
/O.EXP.KCHS.SV.W.0206.000000T0000Z-120730T2345Z/
LONG GA-
742 PM EDT MON JUL 30 2012

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN LONG COUNTY WILL
EXPIRE AT 745 PM EDT...

AT 743 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 3181 8195 3182 8195 3187 8191 3192 8186
      3172 8167 3163 8176 3166 8185 3171 8188
      3172 8191 3175 8192 3180 8197
TIME...MOT...LOC 2343Z 050DEG 17KT 3179 8198 3167 8187

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 8:11 PM EDTSpecial Weather StatementCHSBulloch, Candler, Effingham, Evans, Screven49 min
Jul 29, 8:42 PM EDTSpecial Marine WarningCHS63 min
Jul 29, 8:59 PM EDTSpecial Weather StatementCHSBulloch, Candler, Effingham, Evans, Tattnall46 min
Jul 29, 9:41 PM EDTSpecial Weather StatementCHSCandler, Evans, Tattnall49 min
Jul 29, 10:30 PM EDTSpecial Weather StatementCHSBryan, Bulloch, Candler, Evans, Long, Tattnall45 min
Jul 30, 7:05 AM EDTSpecial Marine WarningCHS85 min
Jul 30, 8:38 AM EDTSpecial Marine WarningCHS2 hr
Jul 30, 10:24 AM EDTSpecial Marine WarningCHS2 hr
Jul 30, 11:58 AM EDTSpecial Marine WarningCHS2 hr
Jul 30, 2:39 PM EDTSpecial Marine WarningCHS66 min
Jul 30, 2:48 PM EDTSpecial Weather StatementCHSLiberty27 min
Jul 30, 2:52 PM EDTSevere Thunderstorm WarningCHSBryan, Chatham, Liberty53 min
Jul 30, 3:08 PM EDTSpecial Weather StatementCHSJenkins, Screven52 min
Jul 30, 3:22 PM EDTSpecial Weather StatementCHSMcIntosh23 min
Jul 30, 3:36 PM EDTSpecial Marine WarningCHS98 min
Jul 30, 3:50 PM EDTSpecial Weather StatementCHSMcIntosh25 min
Jul 30, 3:57 PM EDTSevere Thunderstorm WarningCHSEffingham, Screven63 min
Jul 30, 4:09 PM EDTSpecial Weather StatementCHSMcIntosh36 min
Jul 30, 4:24 PM EDTSpecial Weather StatementCHSBulloch51 min
Jul 30, 4:27 PM EDTSevere Thunderstorm WarningCHSEffingham48 min
Jul 30, 4:52 PM EDTSpecial Weather StatementCHSBulloch, Candler23 min
Jul 30, 5:13 PM EDTSevere Thunderstorm WarningCHSBryan, Bulloch, Chatham, Effingham, Liberty62 min
Jul 30, 5:23 PM EDTSpecial Marine WarningCHS2 hr
Jul 30, 5:50 PM EDTSevere Thunderstorm WarningCHSBryan, Chatham, Liberty55 min
Jul 30, 6:14 PM EDTSevere Thunderstorm WarningCHSBryan, Chatham, Liberty, Long31 min
Jul 30, 6:32 PM EDTSpecial Marine WarningCHS58 min
Jul 30, 6:45 PM EDTSpecial Weather StatementCHSLiberty, Long45 min
Jul 30, 7:14 PM EDTSpecial Weather StatementCHSLong46 min
Jul 30, 7:26 PM EDTSpecial Marine WarningCHS47 min
Jul 30, 7:56 PM EDTSpecial Marine WarningCHS55 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012Every 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.