Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 75, NWS Charleston, SC

May 22, 2012Bulloch County, Effingham County, Screven County, Georgia

NWS Charleston, SC issued this severe thunderstorm warning at May 22, 2012, 4:34 PM EDT for Bulloch County, Effingham County, Screven County, Georgia. It was in force for 40 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
May 22, 2012, 4:34 PM EDT (20:34 UTC)
Expired
May 22, 2012, 5:14 PM EDT
In force
40 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon

Counties Bulloch County, GA, Effingham County, GA, Screven County, GA

The radar

The Charleston,SC radar (KCLX), 38 km from the middle of the area, began a volume at 20:36 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 watch it was issued in

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

IssuedProductOfficeLasted
May 22, 3:32 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.6 hours before the alert went out and 138 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 2012-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 831 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 12:00Z on 2012-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
831 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1209 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
49 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.

846 
WUUS52 KCHS 222034
SVRCHS
GAC031-103-251-222130-
/O.NEW.KCHS.SV.W.0075.120522T2034Z-120522T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
434 PM EDT TUE MAY 22 2012

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN BULLOCH COUNTY IN SOUTHEAST GEORGIA...
  NORTHERN EFFINGHAM COUNTY IN SOUTHEAST GEORGIA...
  SOUTHERN SCREVEN COUNTY IN SOUTHEAST GEORGIA...

* UNTIL 530 PM EDT

* AT 435 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS...ALONG A LINE EXTENDING FROM OLIVER TO
  LEEFIELD...MOVING EAST 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...
  LEEFIELD...STILSON...CAPTOLO...ALTMAN...OLIVER...NEWINGTON...
  HUNTERS...KILDARE...GUYTON...

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 3287 8151 3271 8141 3270 8143 3269 8140
      3265 8139 3263 8141 3263 8142 3259 8138
      3256 8132 3237 8120 3228 8162 3262 8176
TIME...MOT...LOC 2035Z 252DEG 17KT 3253 8161 3240 8156

$$
2 follow-up statements
719 
WWUS52 KCHS 222053
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
453 PM EDT TUE MAY 22 2012

GAC031-222103-
/O.CAN.KCHS.SV.W.0075.000000T0000Z-120522T2130Z/
BULLOCH GA-
453 PM EDT TUE MAY 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BULLOCH COUNTY HAS
BEEN CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

LAT...LON 3287 8151 3270 8143 3269 8140 3265 8139
      3263 8141 3263 8142 3259 8138 3256 8132
      3237 8121 3240 8152 3250 8151 3261 8164
TIME...MOT...LOC 2053Z 252DEG 17KT 3256 8151 3243 8146

$$

GAC103-251-222130-
/O.CON.KCHS.SV.W.0075.000000T0000Z-120522T2130Z/
SCREVEN GA-EFFINGHAM GA-
453 PM EDT TUE MAY 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR NORTHERN EFFINGHAM AND SOUTHEASTERN SCREVEN COUNTIES...

AT 453 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM
STALCO TO GRIFFIN LAKE...MOVING EAST AT 20 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...CAPTOLO...
EGYPT...HUNTERS...KILDARE...NEWINGTON...OLIVER...SHAWNEE AND
STILLWELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

&&

LAT...LON 3287 8151 3270 8143 3269 8140 3265 8139
      3263 8141 3263 8142 3259 8138 3256 8132
      3237 8121 3240 8152 3250 8151 3261 8164
TIME...MOT...LOC 2053Z 252DEG 17KT 3256 8151 3243 8146

$$
329 
WWUS52 KCHS 222114
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
514 PM EDT TUE MAY 22 2012

GAC103-251-222124-
/O.CAN.KCHS.SV.W.0075.000000T0000Z-120522T2130Z/
SCREVEN GA-EFFINGHAM GA-
514 PM EDT TUE MAY 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN EFFINGHAM AND
SOUTHEASTERN SCREVEN COUNTIES HAS BEEN CANCELLED...

AT 514 PM EDT...RADAR INDICATED THAT THE THUNDERSTORM THAT PROMPTED
THE WARNING HAD WEAKENED...THUS THE WARNING HAS BEEN CANCELED.

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

LAT...LON 3287 8151 3270 8143 3269 8140 3265 8139
      3263 8141 3263 8142 3259 8138 3256 8132
      3237 8121 3240 8152 3250 8151 3261 8164
TIME...MOT...LOC 2114Z 252DEG 17KT 3259 8140 3246 8135

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 3:05 PM EDTSevere Thunderstorm WarningCHSEvans, Tattnall55 min
May 22, 3:51 PM EDTSevere Thunderstorm WarningCHSBryan, Evans, Liberty, Tattnall36 min
May 22, 4:23 PM EDTSpecial Weather StatementCHSLong37 min
May 22, 4:26 PM EDTSpecial Weather StatementCHSScreven34 min
May 22, 5:12 PM EDTSpecial Weather StatementCHSChatham33 min
May 22, 5:28 PM EDTSevere Thunderstorm WarningCHSBryan, Chatham45 min
May 22, 5:31 PM EDTSpecial Marine WarningCHS89 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.