Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 176, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Apr 16, 2011, 2:46 AM EDT for Harris County, Georgia. It was in force for 44 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, 2:46 AM EDT (06:46 UTC)
- Expired
- Apr 16, 2011, 3:30 AM EDT
- In force
- 44 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
County Harris County, GA
The radar
The Atlanta radar (KFFC), 78 km from the middle of the area, began a volume at 06:48 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, 6.8 hours before the alert went out and 82 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.
413
WUUS52 KFFC 160646
SVRFFC
GAC145-160730-
/O.NEW.KFFC.SV.W.0176.110416T0646Z-110416T0730Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
246 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
* UNTIL 330 AM EDT
* AT 241 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO 60
MPH. THIS STORM WAS LOCATED 24 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 8475 3285 8471 3273 8468 3270 8470
3258 8469 3258 8484 3259 8491 3261 8491
3261 8508 3269 8513 3273 8512 3275 8515
3278 8514 3282 8518 3285 8516 3287 8519
TIME...MOT...LOC 0646Z 240DEG 37KT 3262 8519
$$1 follow-up statement
876
WWUS52 KFFC 160702
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
302 AM EDT SAT APR 16 2011
GAC145-160730-
/O.CON.KFFC.SV.W.0176.000000T0000Z-110416T0730Z/
HARRIS GA-
302 AM EDT SAT APR 16 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 AM EDT
FOR HARRIS COUNTY...
AT 257 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP
TO 60 MPH. THIS STORM WAS LOCATED NEAR LAKE HARDING...MOVING
NORTHEAST AT 45 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MULBERRY GROVE...WHITESVILLE-PINE LAKE...HAMILTON...PINE MOUNTAIN
VALLEY...PINE MOUNTAIN-CALLAWAY GARDENS AND F.D. ROOSEVELT STATE
PARK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. ALTHOUGH
CURRENT DATA DOES NOT INDICATE THE EXISTENCE OF A TORNADO...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM EDT SATURDAY MORNING
FOR GEORGIA.
&&
LAT...LON 3287 8475 3285 8471 3280 8469 3275 8470
3261 8504 3261 8508 3267 8510 3269 8513
3273 8512 3275 8515 3278 8514 3282 8518
3285 8516 3287 8518
TIME...MOT...LOC 0702Z 240DEG 37KT 3270 8502
$$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, 3:15 AM EDT | Severe Thunderstorm Warning | FFC | Harris, Muscogee | 45 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.