Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 1, NWS Charleston, SC

January 21, 20124 counties in Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Jan 21, 2012, 4:40 PM EST for 4 counties in Georgia. It was in force for 50 min. 1 report 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
Jan 21, 2012, 4:40 PM EST (21:40 UTC)
Expired
Jan 21, 2012, 5:30 PM EST
In force
50 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon

Counties Bulloch County, GA, Candler County, GA, Jenkins County, GA, Screven County, GA

The radar

The Charleston,SC radar (KCLX), 91 km from the middle of the area, began a volume at 21:42 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
Jan 21, 5:04 PM ESTTSTM WND DMG1 Sse Altman, GA*** 1 INJ *** A TREE FELL ON A MOBILE HOME TRAPPING THE OCCUPANT INSIDE. THE OCCUPANT WAS RESCUED AND TRANSPORTED TO THE HOSPITAL WITH UNSPECIFIED INJURIES.

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
Jan 21, 12:28 PM ESTTornado WatchSPC8 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.7 hours before the alert went out and 191 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 12:00Z on 2012-01-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2012-01-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 230 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1099 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
230 m²/s²
0-3 km storm-relative helicity
256 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.

994 
WUUS52 KCHS 212140
SVRCHS
GAC031-043-165-251-212230-
/O.NEW.KCHS.SV.W.0001.120121T2140Z-120121T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
440 PM EST SAT JAN 21 2012

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BULLOCH COUNTY IN SOUTHEAST GEORGIA...
  NORTHERN CANDLER COUNTY IN SOUTHEAST GEORGIA...
  SOUTHERN JENKINS COUNTY IN SOUTHEAST GEORGIA...
  SOUTHWESTERN SCREVEN COUNTY IN SOUTHEAST GEORGIA...

* UNTIL 530 PM EST

* AT 440 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM...9 MILES SOUTHWEST OF BUTTS...MOVING EAST AT
  50 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...
  BUTTS...EMMALANE...SCARBORO...PORTAL...ROCKY FORD...MIDDLEGROUND...
  WOODCLIFF...STATESBORO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. IF YOU SEE
OR HEAR A TORNADO...MOVE QUICKLY TO AN INTERIOR ROOM IN A STURDY
STRUCTURE.

&&

LAT...LON 3252 8216 3256 8210 3256 8207 3255 8203
      3260 8201 3262 8202 3266 8209 3278 8213
      3282 8154 3236 8161 3248 8218
TIME...MOT...LOC 2140Z 270DEG 44KT 3267 8212

$$
2 follow-up statements
389 
WWUS52 KCHS 212201
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
501 PM EST SAT JAN 21 2012

GAC031-043-165-251-212230-
/O.CON.KCHS.SV.W.0001.000000T0000Z-120121T2230Z/
SCREVEN GA-JENKINS GA-BULLOCH GA-CANDLER GA-
501 PM EST SAT JAN 21 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EST
FOR NORTH CENTRAL CANDLER...NORTHERN BULLOCH...SOUTH CENTRAL JENKINS
AND SOUTHWESTERN SCREVEN COUNTIES...

AT 501 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM NEAR ROCKY FORD...MOVING EAST AT 50
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...ALTMAN...
CAPTOLO...DOVER...HOPEULIKIT...LEEFIELD...MIDDLEGROUND...PORTAL...
ROCKY FORD...SCARBORO...STATESBORO...SYLVANIA...WESTSIDE AND
WOODCLIFF.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. IF YOU SEE
OR HEAR A TORNADO...MOVE QUICKLY TO AN INTERIOR ROOM IN A STURDY
STRUCTURE.

&&

LAT...LON 3250 8204 3252 8209 3254 8207 3256 8207
      3255 8203 3260 8201 3262 8202 3267 8199
      3274 8197 3282 8154 3236 8161
TIME...MOT...LOC 2201Z 270DEG 44KT 3262 8189

$$
702 
WWUS52 KCHS 212217
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
517 PM EST SAT JAN 21 2012

GAC043-165-212227-
/O.CAN.KCHS.SV.W.0001.000000T0000Z-120121T2230Z/
JENKINS GA-CANDLER GA-
517 PM EST SAT JAN 21 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CANDLER AND
SOUTH CENTRAL JENKINS COUNTIES HAS BEEN CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EST SATURDAY EVENING
FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

LAT...LON 3250 8181 3253 8181 3254 8182 3257 8183
      3260 8180 3264 8178 3268 8177 3269 8175
      3275 8173 3282 8154 3248 8160
TIME...MOT...LOC 2217Z 270DEG 44KT 3262 8166

$$

GAC031-251-212230-
/O.CON.KCHS.SV.W.0001.000000T0000Z-120121T2230Z/
SCREVEN GA-BULLOCH GA-
517 PM EST SAT JAN 21 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EST
FOR NORTH CENTRAL BULLOCH AND CENTRAL SCREVEN COUNTIES...

AT 517 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM NEAR COOPERVILLE...MOVING EAST AT 50
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...ALTMAN...
CAPTOLO...DOVER AND SYLVANIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. IF YOU SEE
OR HEAR A TORNADO...MOVE QUICKLY TO AN INTERIOR ROOM IN A STURDY
STRUCTURE.

&&

LAT...LON 3250 8181 3253 8181 3254 8182 3257 8183
      3260 8180 3264 8178 3268 8177 3269 8175
      3275 8173 3282 8154 3248 8160
TIME...MOT...LOC 2217Z 270DEG 44KT 3262 8166

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 21, 3:39 PM ESTSpecial Weather StatementCHSJenkins51 min
Jan 21, 4:30 PM ESTSpecial Weather StatementCHSJenkins30 min
Jan 21, 5:13 PM ESTSevere Thunderstorm WarningCHSScreven47 min
Jan 21, 6:39 PM ESTSpecial Weather StatementCHSBulloch, Evans36 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.