Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 177, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Apr 16, 2011, 3:15 AM EDT for Harris County, Muscogee County, Georgia. 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 16, 2011, 3:15 AM EDT (07:15 UTC)
- Expired
- Apr 16, 2011, 4:00 AM EDT
- In force
- 45 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Harris County, GA, Muscogee County, GA
The radar
The Atlanta radar (KFFC), 76 km from the middle of the area, began a volume at 07:16 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 16, 3:37 AM EDT | TSTM WND DMG | 2 Ne Fortson, GA | A NWS STORM SURVEY TEAM DETERMINED THAT STRAIGHT LINE WINDS CAUSED DAMAGE 2 MILES NE OF FORTSON IN HARRIS COUNTY. THERE WAS ONE TREE WITH ITS TOP CLIPPED OFF AND 3 HOUSES THAT HAD SHINGLE DAMAGE. |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 15, 9:12 PM EDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 7.3 hours before the alert went out and 79 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.
- Mixed-layer CAPE
- 406 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1138 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 373 m²/s²
- 0-3 km storm-relative helicity
- 566 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 11.3
The text
As transmitted, in the capitals the NWS used until 2016.
550
WUUS52 KFFC 160715
SVRFFC
GAC145-215-160800-
/O.NEW.KFFC.SV.W.0177.110416T0715Z-110416T0800Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
315 AM EDT SAT APR 16 2011
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
HARRIS COUNTY IN WEST CENTRAL GEORGIA
NORTHWESTERN MUSCOGEE COUNTY IN WEST CENTRAL GEORGIA
* UNTIL 400 AM EDT
* AT 313 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO 60
MPH. THIS STORM WAS LOCATED 19 MILES SOUTHWEST OF HAMILTON...
MOVING NORTHEAST AT 45 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WAVERLY HALL...PINE MOUNTAIN-CALLAWAY GARDENS AND SHILOH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM EDT SATURDAY MORNING
FOR GEORGIA.
&&
LAT...LON 3287 8490 3287 8475 3285 8471 3283 8469
3274 8470 3273 8468 3270 8470 3261 8470
3250 8501 3259 8509 3264 8511 3267 8510
3268 8511
TIME...MOT...LOC 0715Z 236DEG 37KT 3257 8507
$$1 follow-up statement
791
WWUS52 KFFC 160737
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
337 AM EDT SAT APR 16 2011
GAC215-160747-
/O.CAN.KFFC.SV.W.0177.000000T0000Z-110416T0800Z/
MUSCOGEE GA-
337 AM EDT SAT APR 16 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MUSCOGEE COUNTY
IS CANCELLED...
THE SEVERE THUNDERSTORM HAD MOVED OUT OF THE COUNTY...THUS THE
WARNING HAS BEEN CANCELLED.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM EDT SATURDAY MORNING
FOR GEORGIA.
LAT...LON 3287 8490 3287 8475 3286 8475 3285 8471
3283 8469 3274 8470 3274 8469 3261 8470
3261 8497 3277 8501
TIME...MOT...LOC 0737Z 234DEG 34KT 3263 8492
$$
GAC145-160800-
/O.CON.KFFC.SV.W.0177.000000T0000Z-110416T0800Z/
HARRIS GA-
337 AM EDT SAT APR 16 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 AM EDT
FOR EASTERN HARRIS COUNTY...
AT 335 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP
TO 60 MPH. THIS STORM WAS LOCATED NEAR FORTSON...MOVING NORTHEAST AT
40 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CATAULA...ELLERSLIE...HAMILTON...WAVERLY HALL...PINE MOUNTAIN
VALLEY...PINE MOUNTAIN-CALLAWAY GARDENS AND F.D. ROOSEVELT STATE
PARK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. ALTHOUGH
CURRENT DATA DOES NOT INDICATE THE EXISTENCE OF A TORNADO...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM EDT SATURDAY MORNING
FOR GEORGIA.
&&
LAT...LON 3287 8490 3287 8475 3286 8475 3285 8471
3283 8469 3274 8470 3274 8469 3261 8470
3261 8497 3277 8501
TIME...MOT...LOC 0737Z 234DEG 34KT 3263 8492
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 8:02 PM EDT | Tornado Warning | FFC | Cobb, DeKalb, Fulton | 43 min |
| Apr 15, 8:12 PM EDT | Severe Thunderstorm Warning | FFC | Lamar, Meriwether, Pike, Talbot, Upson | 48 min |
| Apr 15, 8:19 PM EDT | Severe Thunderstorm Warning | FFC | Barrow, Gwinnett | 41 min |
| Apr 15, 8:28 PM EDT | Severe Thunderstorm Warning | FFC | Forsyth, Hall | 47 min |
| Apr 15, 8:45 PM EDT | Severe Thunderstorm Warning | FFC | Cobb, Douglas, Paulding | 45 min |
| Apr 15, 8:56 PM EDT | Severe Thunderstorm Warning | FFC | Butts, Lamar, Monroe, Pike, Upson | 49 min |
| Apr 15, 9:18 PM EDT | Severe Thunderstorm Warning | FFC | Butts, Jasper, Jones, Monroe | 42 min |
| Apr 15, 9:19 PM EDT | Severe Thunderstorm Warning | FFC | DeKalb, Forsyth, Fulton, Gwinnett | 41 min |
| Apr 15, 10:44 PM EDT | River Flood Warning | FFC | Forsyth, Fulton | 40 hr |
| Apr 15, 11:44 PM EDT | River Flood Warning | FFC | Cobb | 6 hr |
| Apr 16, 12:17 AM EDT | River Flood Warning | FFC | Forsyth | 14 hr |
| Apr 16, 12:47 AM EDT | River Flood Warning | FFC | Dade | 34 hr |
| Apr 16, 1:25 AM EDT | Severe Thunderstorm Warning | FFC | Heard, Troup | 50 min |
| Apr 16, 1:40 AM EDT | Severe Thunderstorm Warning | FFC | Bartow, Carroll, Haralson, Paulding | 50 min |
| Apr 16, 1:54 AM EDT | Severe Thunderstorm Warning | FFC | Carroll, Coweta, Fulton, Meriwether | 51 min |
| Apr 16, 2:10 AM EDT | Tornado Warning | FFC | Carroll, Cobb, Douglas, Fulton, Paulding | 50 min |
| Apr 16, 2:38 AM EDT | Severe Thunderstorm Warning | FFC | Clayton, DeKalb, Fayette, Fulton, Henry, Newton and 1 more | 52 min |
| Apr 16, 2:46 AM EDT | Severe Thunderstorm Warning | FFC | Harris | 44 min |
| Apr 16, 3:26 AM EDT | Severe Thunderstorm Warning | FFC | Meriwether | 49 min |
| Apr 16, 3:35 AM EDT | Wind Advisory | FFC | Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more | 16 hr |
| Apr 16, 3:39 AM EDT | Tornado Warning | FFC | Harris, Talbot | 36 min |
| Apr 16, 3:51 AM EDT | Severe Thunderstorm Warning | FFC | Lamar, Meriwether, Pike, Spalding | 39 min |
| Apr 16, 4:04 AM EDT | Severe Thunderstorm Warning | FFC | Meriwether, Pike, Talbot, Upson | 26 min |
| Apr 16, 4:40 AM EDT | Severe Thunderstorm Warning | FFC | Chattahoochee, Macon, Marion, Muscogee, Talbot | 50 min |
| Apr 16, 4:45 AM EDT | Tornado Warning | FFC | Chattahoochee, Marion, Muscogee | 45 min |
| Apr 16, 5:12 AM EDT | Severe Thunderstorm Warning | FFC | Chattahoochee, Crawford, Marion, Talbot, Taylor, Upson | 48 min |
| Apr 16, 5:48 AM EDT | Tornado Warning | FFC | Bibb, Crawford, Monroe, Taylor | 42 min |
| Apr 16, 6:14 AM EDT | Tornado Warning | FFC | Baldwin, Jones, Putnam | 46 min |
| Apr 16, 6:26 AM EDT | River Flood Warning | FFC | Whitfield | 64 hr |
| Apr 16, 8:42 AM EDT | River Flood Warning | FFC | Cobb | 7 hr |
| Apr 16, 10:34 AM EDT | River Flood Warning | FFC | Gordon, Murray, Whitfield | 28 hr |
Nearby
Severe Thunderstorm Warnings in Georgia, 2011Every 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.