Alert archive / Georgia / Tornado Warnings in 2011

Tornado Warning 7, NWS Charleston, SC

April 28, 2011McIntosh County, Georgia

NWS Charleston, SC issued this tornado warning at Apr 28, 2011, 4:06 PM EDT for McIntosh County, Georgia. It was in force for 39 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: Apr 28, 2011, 4:06 PM EDT (20:06 UTC)
Expired: Apr 28, 2011, 4:45 PM EDT
In force: 39 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon

County McIntosh County, GA

The radar

The Jacksonville radar (KJAX), 113 km from the middle of the area, began a volume at 20:07 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, 8.1 hours before the alert went out and 111 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: 1394 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 817 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 161 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

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

232 
WFUS52 KCHS 282006
TORCHS
GAC191-282045-
/O.NEW.KCHS.TO.W.0007.110428T2006Z-110428T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
406 PM EDT THU APR 28 2011

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* TORNADO WARNING FOR...
  MCINTOSH COUNTY IN SOUTHEAST GEORGIA...

* UNTIL 445 PM EDT

* AT 405 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 10 MILES WEST OF
  DARIEN...MOVING EAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  DARIEN...WOLF ISLAND...SAPELO ISLAND...HARRIS NECK...BLACKBEARD
  ISLAND...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS ALSO CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING
STRAIGHT LINE WINDS.

&&

LAT...LON 3129 8141 3133 8144 3135 8151 3140 8159
      3151 8166 3154 8166 3158 8156 3170 8149
      3169 8146 3163 8147 3165 8144 3165 8126
      3160 8119 3148 8119 3140 8125 3137 8124
      3137 8127 3131 8125 3129 8129 3131 8139
TIME...MOT...LOC 2006Z 259DEG 32KT 3141 8159

$$

4 follow-up statements

140 
WWUS52 KCHS 282010
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
410 PM EDT THU APR 28 2011

GAC191-282045-
/O.CON.KCHS.TO.W.0007.000000T0000Z-110428T2045Z/
MCINTOSH GA-
410 PM EDT THU APR 28 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR SOUTHERN
MCINTOSH COUNTY...

AT 405 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR COX...OR ABOUT 10
MILES WEST OF DARIEN...MOVING EAST AT 35 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BLACKBEARD
ISLAND...DARIEN...SAPELO ISLAND AND WOLF ISLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3131 8138 3129 8141 3133 8144 3135 8151
      3140 8159 3146 8163 3147 8162 3151 8166
      3156 8119 3148 8119 3140 8125 3137 8124
      3137 8127 3131 8125 3129 8129
TIME...MOT...LOC 2010Z 263DEG 31KT 3142 8154

$$

454 
WWUS52 KCHS 282021
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
421 PM EDT THU APR 28 2011

GAC191-282045-
/O.CON.KCHS.TO.W.0007.000000T0000Z-110428T2045Z/
MCINTOSH GA-
421 PM EDT THU APR 28 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR SOUTHERN
MCINTOSH COUNTY...

AT 415 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED ABOUT OVER 
DARIEN...MOVING EAST AT 35 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BLACKBEARD
ISLAND...DARIEN...SAPELO ISLAND AND WOLF ISLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO MAY BE WRAPPED IN RAIN AND NOT EASILY SEEN. IF YOU WAIT
UNTIL YOU SEE OR HEAR IT COMING IT MAY BE TOO LATE. TAKE SHELTER NOW.

THIS STORM IS ALSO CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING 
STRAIGHT LINE WINDS. A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT 
FOR ALL OF MCINTOSH COUNTY UNTIL 445 PM EDT. 

&&

LAT...LON 3131 8138 3129 8141 3133 8144 3135 8151
      3140 8159 3146 8163 3147 8162 3151 8166
      3156 8119 3148 8119 3140 8125 3137 8124
      3137 8127 3131 8125 3129 8129
TIME...MOT...LOC 2021Z 263DEG 31KT 3142 8145

$$

318 
WWUS52 KCHS 282033
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
433 PM EDT THU APR 28 2011

GAC191-282045-
/O.CON.KCHS.TO.W.0007.000000T0000Z-110428T2045Z/
MCINTOSH GA-
433 PM EDT THU APR 28 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR SOUTHERN
MCINTOSH COUNTY...

AT 430 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR VALONA...OR ABOUT
8 MILES NORTHEAST OF DARIEN...MOVING EAST AT 35 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BLACKBEARD
ISLAND...SAPELO ISLAND AND WOLF ISLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO MAY BE WRAPPED IN RAIN AND NOT EASILY SEEN. IF YOU WAIT
UNTIL YOU SEE OR HEAR IT COMING IT MAY BE TOO LATE. TAKE SHELTER NOW.

THIS STORM IS ALSO CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING 
STRAIGHT LINE WINDS. A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT 
FOR ALL OF MCINTOSH COUNTY UNTIL 445 PM EDT. 

&&

LAT...LON 3131 8136 3131 8139 3129 8141 3133 8144
      3135 8151 3139 8157 3152 8149 3156 8119
      3148 8119 3140 8125 3137 8124 3137 8127
      3134 8127 3131 8125 3129 8129
TIME...MOT...LOC 2033Z 263DEG 31KT 3147 8132

$$

047 
WWUS52 KCHS 282046
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
446 PM EDT THU APR 28 2011

GAC191-282055-
/O.EXP.KCHS.TO.W.0007.000000T0000Z-110428T2045Z/
MCINTOSH GA-
446 PM EDT THU APR 28 2011

...THE TORNADO WARNING FOR SOUTHERN MCINTOSH COUNTY WILL EXPIRE AT
445 PM EDT...

AT 440 PM EDT...RADAR INDICATED THAT TORNADIC THUNDERSTORM THAT
PROMPTED THE WARNING WEAKENED...AND WAS NO LONGER CAPABLE OF
PRODUCING TORNADOES OR OTHER SEVERE WEATHER. THE TORNADO WARNING HAS
THEREFORE BEEN ALLOWED TO EXPIRE.

ALTHOUGH THE TORNADO WARNING IS NO LONGER IN EFFECT...ADDITIONAL 
THUNDERSTORMS CAPABLE OF PRODUCING FREQUENT LIGHTNING...VERY HEAVY 
RAIN AND GUSTY WINDS INTO THE EARLY EVENING. CONTINUE TO MONITOR 
NOAA WEATHER RADIO ALL HAZARDS FOR THE LATEST FORECASTS...WARNINGS 
AND STATEMENTS FROM THE NATIONAL WEATHER SERVICE OFFICE IN 
CHARLESTON.

TO REPORT TORNADO...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 3131 8136 3131 8139 3129 8141 3133 8144
      3135 8151 3139 8157 3152 8149 3156 8119
      3148 8119 3140 8125 3137 8124 3137 8127
      3134 8127 3131 8125 3129 8129
TIME...MOT...LOC 2045Z 263DEG 31KT 3148 8120

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 7:13 AM EDT	Special Weather Statement	CHS	Jenkins	62 min
Apr 28, 7:27 AM EDT	Severe Thunderstorm Warning	CHS	Jenkins, Screven	63 min
Apr 28, 9:32 AM EDT	Special Weather Statement	CHS	Bulloch, Effingham	28 min
Apr 28, 12:30 PM EDT	Special Weather Statement	CHS	Jenkins, Screven	30 min
Apr 28, 3:30 PM EDT	Special Weather Statement	CHS	McIntosh	30 min
Apr 28, 3:42 PM EDT	Special Marine Warning	CHS		2 hr
Apr 28, 3:57 PM EDT	Severe Thunderstorm Warning	CHS	McIntosh	48 min
Apr 28, 4:52 PM EDT	Special Marine Warning	CHS		96 min
Apr 28, 5:43 PM EDT	Special Marine Warning	CHS		58 min
Apr 28, 7:58 PM EDT	Special Marine Warning	CHS		55 min

Nearby

Tornado Warnings in Georgia, 2011 Every tornado warning in 2011 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.