Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 49, NWS Charleston, SC

April 22, 2011Bulloch County, Effingham County, Georgia; Jasper County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Apr 22, 2011, 5:00 PM EDT for Bulloch County, Effingham County, Georgia; Jasper County, South Carolina. It was in force for 45 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: Apr 22, 2011, 5:00 PM EDT (21:00 UTC)
Expired: Apr 22, 2011, 5:45 PM EDT
In force: 45 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon

Counties Bulloch County, GA, Effingham County, GA, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 32 km from the middle of the area, began a volume at 21:03 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

Time	Report	Where	Remark
Apr 22, 5:25 PM EDT	TSTM WND DMG	4 E Springfield, GA	POWERLINES DOWN ALONG N ASH ST.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.0 hours before the alert went out and 128 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: 211 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 473 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 242 m²/s²
0-3 km storm-relative helicity: 303 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

383 
WUUS52 KCHS 222100
SVRCHS
GAC031-103-SCC053-222145-
/O.NEW.KCHS.SV.W.0049.110422T2100Z-110422T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
500 PM EDT FRI APR 22 2011

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME EAST CENTRAL BULLOCH COUNTY IN SOUTHEAST GEORGIA...
  NORTHERN EFFINGHAM COUNTY IN SOUTHEAST GEORGIA...
  CENTRAL JASPER COUNTY IN SOUTHERN SOUTH CAROLINA...

* UNTIL 545 PM EDT

* AT 459 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM...NEAR GUYTON...MOVING EAST AT 30 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...
  GUYTON...SHAWNEE...SPRINGFIELD...STILLWELL...CLYO...EBENEZER...
  TARBORO...

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 3261 8103 3232 8100 3229 8119 3227 8143
      3240 8153 3250 8153
TIME...MOT...LOC 2100Z 265DEG 24KT 3239 8138

$$

2 follow-up statements

031 
WWUS52 KCHS 222122
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
522 PM EDT FRI APR 22 2011

GAC031-222132-
/O.CAN.KCHS.SV.W.0049.000000T0000Z-110422T2145Z/
BULLOCH GA-
522 PM EDT FRI APR 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BULLOCH COUNTY
HAS BEEN CANCELLED...

LAT...LON 3240 8147 3247 8144 3261 8103 3232 8100
      3229 8119 3227 8143
TIME...MOT...LOC 2122Z 265DEG 24KT 3238 8127

$$

GAC103-SCC053-222145-
/O.CON.KCHS.SV.W.0049.000000T0000Z-110422T2145Z/
EFFINGHAM GA-JASPER SC-
522 PM EDT FRI APR 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR CENTRAL JASPER AND CENTRAL EFFINGHAM COUNTIES...

AT 521 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR SPRINGFIELD...OR ABOUT OVER SPRINGFIELD...MOVING EAST AT
30 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...CLYO...
EBENEZER...GUYTON...PINEORA...RINCON...SHAWNEE...SPRINGFIELD...
STILLWELL...TARBORO AND TILLMAN.

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 HAIL OR WIND DAMAGE...CONTACT THE CHARLESTON NATIONAL
WEATHER SERVICE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH TWITTER USING
#WXREPORT.

&&

LAT...LON 3240 8147 3247 8144 3261 8103 3232 8100
      3229 8119 3227 8143
TIME...MOT...LOC 2122Z 265DEG 24KT 3238 8127

$$

606 
WWUS52 KCHS 222142
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
542 PM EDT FRI APR 22 2011

GAC103-SCC053-222151-
/O.EXP.KCHS.SV.W.0049.000000T0000Z-110422T2145Z/
EFFINGHAM GA-JASPER SC-
542 PM EDT FRI APR 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL JASPER AND CENTRAL
EFFINGHAM COUNTIES WILL EXPIRE AT 545 PM EDT...

AT 539 PM EDT...RADAR INDICATED THAT THE THUNDERSTORM WHICH PROMPTED
THE WARNING HAD WEAKENED...THUS THE SEVERE THUNDERSTORM WARNING HAS 
BEEN ALLOWED TO EXPIRE. A SEVERE THUNDERSTORM WARNING REMAINS IN 
EFFECT FOR THE SOUTHERN PART OF THE COUNTY.

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.

LAT...LON 3240 8147 3247 8144 3261 8103 3232 8100
      3229 8119 3227 8143
TIME...MOT...LOC 2141Z 265DEG 24KT 3239 8112

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 8:22 PM EDT	Special Marine Warning	CHS		53 min
Apr 22, 12:28 AM EDT	Small Craft Advisory	CHS		6 hr
Apr 22, 1:04 PM EDT	Special Marine Warning	CHS		116 min
Apr 22, 4:17 PM EDT	Special Weather Statement	CHS	Bulloch	28 min
Apr 22, 4:50 PM EDT	Special Weather Statement	CHS	Effingham	25 min
Apr 22, 5:30 PM EDT	Severe Thunderstorm Warning	CHS	Chatham, Effingham	60 min
Apr 21, 8:28 PM EDT	Special Weather Statement	CHS	Jasper	32 min
Apr 21, 8:34 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Hampton, Jasper	56 min
Apr 22, 3:06 PM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston, Dorchester	105 min
Apr 22, 3:45 PM EDT	Special Weather Statement	CHS	Jasper	30 min
Apr 22, 4:12 PM EDT	Special Weather Statement	CHS	Jasper	33 min
Apr 22, 4:37 PM EDT	Special Weather Statement	CHS	Jasper	23 min
Apr 22, 6:13 PM EDT	Special Weather Statement	CHS	Jasper	32 min

Nearby

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