Alert archive / Georgia / Tornado Warnings in 2010

Tornado Warning 35, NWS Atlanta, GA

October 27, 20104 counties in Georgia

NWS Atlanta, GA issued this tornado warning at Oct 27, 2010, 2:13 PM EDT for 4 counties in Georgia. It was in force for 13 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: Oct 27, 2010, 2:13 PM EDT (18:13 UTC)
Expired: Oct 27, 2010, 2:26 PM EDT
In force: 13 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Clayton County, GA, DeKalb County, GA, Henry County, GA, Rockdale County, GA

The radar

The Atlanta radar (KFFC), 48 km from the middle of the area, began a volume at 18:14 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
Oct 27, 12:49 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.2 hours before the alert went out and 43 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: 608 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 587 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 217 m²/s²
0-3 km storm-relative helicity: 268 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

338 
WFUS52 KFFC 271813
TORFFC
GAC063-089-151-247-271845-
/O.NEW.KFFC.TO.W.0035.101027T1813Z-101027T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
213 PM EDT WED OCT 27 2010

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN CLAYTON COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHERN DEKALB COUNTY IN NORTH CENTRAL GEORGIA
  NORTH CENTRAL HENRY COUNTY IN NORTH CENTRAL GEORGIA
  WEST CENTRAL ROCKDALE COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 245 PM EDT

* AT 210 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MORROW...
  MOVING EAST AT 25 MPH.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO A
BASEMENT OR INTERIOR ROOM ON THE GROUND FLOOR. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

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 800 PM EDT WEDNESDAY EVENING
FOR NORTHERN GEORGIA.

&&

LAT...LON 3372 8408 3361 8401 3353 8434 3364 8436
TIME...MOT...LOC 1813Z 251DEG 20KT 3358 8429

$$

1 follow-up statement

917 
WWUS52 KFFC 271826
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
226 PM EDT WED OCT 27 2010

GAC063-089-151-247-271836-
/O.CAN.KFFC.TO.W.0035.000000T0000Z-101027T1845Z/
HENRY GA-CLAYTON GA-ROCKDALE GA-DEKALB GA-
226 PM EDT WED OCT 27 2010

...THE TORNADO WARNING FOR SOUTHERN DEKALB...WEST CENTRAL ROCKDALE...
NORTHEASTERN CLAYTON AND NORTH CENTRAL HENRY COUNTIES IS CANCELLED...

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SNAPFINGER...PANOLA MOUNTAIN STATE PARK...RICHARDSON PARK...
KLONDIKE...ARABIA MOUNTAIN AND LITHONIA.

THE THUNDERSTORM HAS WEAKENED AND IS NO LONGER SUSPECTED TO BE
PRODUCING A TORNADO. HOWEVER...STRONG GUSTY WINDS UP TO 45 MPH...VERY
HEAVY RAIN...AND SMALL HAIL ARE STILL POSSIBLE WITH THIS STORM.

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 800 PM EDT WEDNESDAY EVENING
FOR NORTHERN GEORGIA.

LAT...LON 3372 8408 3361 8401 3353 8434 3364 8436
TIME...MOT...LOC 1826Z 251DEG 20KT 3360 8421

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 26, 8:49 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Dade, Walker	26 min
Oct 26, 9:37 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Chattooga, Floyd, Gordon	38 min
Oct 27, 10:48 AM EDT	Tornado Warning	FFC	Carroll, Coweta, Douglas, Fulton	27 min
Oct 27, 4:24 PM EDT	Severe Thunderstorm Warning	FFC	Oglethorpe	36 min

Nearby

Tornado Warnings in Georgia, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.