Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 203, NWS Atlanta, GA

April 27, 2011Catoosa County, Dade County, Walker County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 27, 2011, 9:02 AM EDT for Catoosa County, Dade County, Walker County, Georgia. It was in force for 16 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 27, 2011, 9:02 AM EDT (13:02 UTC)
Expired: Apr 27, 2011, 9:18 AM EDT
In force: 16 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Catoosa County, GA, Dade County, GA, Walker County, GA

The radar

The Northeast Alabama radar (KHTX), 72 km from the middle of the area, began a volume at 13:04 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.

Issued	Product	Office	Lasted
Apr 27, 7:48 AM EDT	Tornado Watch	SPC	2 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 1.0 hours before the alert went out and 179 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 714 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -84 m²/s²
0-3 km storm-relative helicity: -38 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.

784 
WUUS52 KFFC 271302
SVRFFC
GAC047-083-295-271330-
/O.NEW.KFFC.SV.W.0203.110427T1302Z-110427T1330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
902 AM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CATOOSA COUNTY IN NORTHWEST GEORGIA
  NORTHEASTERN DADE COUNTY IN NORTHWEST GEORGIA
  NORTH CENTRAL WALKER COUNTY IN NORTHWEST GEORGIA

* UNTIL 930 AM EDT

* AT 859 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS UP TO 70
  MPH.  THIS STORM WAS LOCATED NEAR LOOKOUT MOUNTAIN...MOVING
  NORTHEAST AT 55 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FORT
  OGLETHORPE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 NOON EDT WEDNESDAY FOR
NORTHERN GEORGIA.

&&

LAT...LON 3498 8519 3487 8508 3480 8552 3499 8548
TIME...MOT...LOC 1302Z 241DEG 48KT 3497 8532

$$

1 follow-up statement

169 
WWUS52 KFFC 271318
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
918 AM EDT WED APR 27 2011

GAC047-083-295-271327-
/O.CAN.KFFC.SV.W.0203.000000T0000Z-110427T1330Z/
WALKER GA-CATOOSA GA-DADE GA-
918 AM EDT WED APR 27 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DADE...
NORTHWESTERN CATOOSA AND NORTH CENTRAL WALKER COUNTIES IS
CANCELLED...

THE SEVERE THUNDERSTORM HAS MOVED OUT OF NORTHEASTERN DADE... 
NORTHWESTERN CATOOSA AND NORTH CENTRAL WALKER COUNTIES AND SEVERE 
WEATHER IS NO LONGER EXPECTED.

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 NOON EDT WEDNESDAY FOR
NORTHERN GEORGIA.

LAT...LON 3498 8519 3487 8508 3480 8552 3499 8548
TIME...MOT...LOC 1317Z 241DEG 48KT 3506 8510

$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 27, 8:04 AM EDT	Severe Thunderstorm Warning	FFC	Bartow, Chattooga, Floyd, Haralson, Polk	56 min
Apr 27, 8:16 AM EDT	Tornado Warning	FFC	Catoosa, Chattooga, Dade, Walker, Whitfield	44 min
Apr 27, 8:25 AM EDT	Tornado Warning	FFC	Dade, Walker	35 min
Apr 27, 8:28 AM EDT	Severe Thunderstorm Warning	FFC	Carroll, Haralson, Heard	32 min
Apr 27, 8:35 AM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Cobb, Gilmer, Gordon, Murray and 5 more	55 min
Apr 27, 8:42 AM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Murray, Whitfield	48 min
Apr 27, 8:51 AM EDT	Severe Thunderstorm Warning	FFC	Clayton, Coweta, Douglas, Fayette, Fulton	29 min
Apr 27, 8:54 AM EDT	Tornado Warning	FFC	Gilmer, Gordon, Murray, Whitfield	51 min
Apr 27, 9:26 AM EDT	Severe Thunderstorm Warning	FFC	Fannin, Gilmer, Murray	39 min
Apr 27, 1:59 PM EDT	Severe Thunderstorm Warning	FFC	Dade, Walker	61 min
Apr 27, 2:25 PM EDT	Tornado Warning	FFC	Dade, Walker	34 min
Apr 27, 2:37 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Whitfield	25 min
Apr 27, 5:07 PM EDT	Severe Thunderstorm Warning	FFC	Dade, Walker	38 min
Apr 27, 5:14 PM EDT	Tornado Warning	FFC	Dade, Walker	46 min
Apr 27, 5:51 PM EDT	Tornado Warning	FFC	Catoosa	24 min
Apr 27, 5:53 PM EDT	River Flood Warning	FFC	Dade	11 hr
Apr 27, 6:03 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Walker	27 min
Apr 27, 6:15 PM EDT	Severe Thunderstorm Warning	FFC	Dade	30 min
Apr 27, 7:20 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Dade, Walker	55 min
Apr 27, 7:32 PM EDT	Tornado Warning	FFC	Chattooga, Dade, Walker	43 min
Apr 27, 7:59 PM EDT	Tornado Warning	FFC	Catoosa, Walker, Whitfield	46 min

Nearby

Severe Thunderstorm Warnings in Georgia, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.