Alert archive / Georgia / Tornado Warnings in 2018

Tornado Warning 20, NWS Atlanta, GA

October 10, 2018Cobb County, Douglas County, Fulton County, Georgia

NWS Atlanta, GA issued this tornado warning at Oct 10, 2018, 6:37 PM EDT for Cobb County, Douglas County, Fulton County, Georgia. It was in force for 23 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 10, 2018, 6:37 PM EDT (22:37 UTC)
Expired: Oct 10, 2018, 7:00 PM EDT
In force: 23 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Cobb County, GA, Douglas County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 44 km from the middle of the area, began a volume at 22:37 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.6 hours before the alert went out and 44 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: 82 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 540 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

981 
WFUS52 KFFC 102237
TORFFC
GAC067-097-121-102300-
/O.NEW.KFFC.TO.W.0020.181010T2237Z-181010T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Peachtree City GA
637 PM EDT WED OCT 10 2018

The National Weather Service in Peachtree City has issued a

* Tornado Warning for...
  South central Cobb County in north central Georgia...
  Northeastern Douglas County in north central Georgia...
  Central Fulton County in north central Georgia...

* Until 700 PM EDT.
    
* At 637 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Cascade Heights, or near Atlanta, moving west at
  20 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Atlanta, East Point, Austell, Sweetwater Creek State Park, Six
  Flags Over Georgia, Cascade Heights, Sandtown and Mableton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

If you see wind damage...hail or 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 or tweet us your report at NWSATLANTA.

&&

LAT...LON 3382 8462 3378 8452 3374 8441 3369 8442
      3371 8462 3377 8464
TIME...MOT...LOC 2237Z 099DEG 15KT 3372 8444 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

1 follow-up statement

039 
WWUS52 KFFC 102255
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
655 PM EDT WED OCT 10 2018

GAC067-097-121-102304-
/O.EXP.KFFC.TO.W.0020.000000T0000Z-181010T2300Z/
Cobb GA-Douglas GA-Fulton GA-
655 PM EDT WED OCT 10 2018

...THE TORNADO WARNING FOR SOUTH CENTRAL COBB...NORTHEASTERN DOUGLAS
AND CENTRAL FULTON COUNTIES WILL EXPIRE AT 700 PM EDT...
    
The tornadic storm which prompted the warning has weakened. 
Therefore, the warning will be allowed to expire at 7 PM.

LAT...LON 3382 8462 3378 8452 3374 8441 3369 8442
      3371 8462 3377 8464
TIME...MOT...LOC 2254Z 099DEG 15KT 3373 8452 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 11:37 AM EDT	Hurricane Warning	FFC	Bleckley, Crisp, Dodge, Dooly, Houston, Laurens and 10 more	14 hr
Oct 10, 2:36 PM EDT	Special Weather Statement	FFC	Upson	24 min
Oct 10, 2:46 PM EDT	Special Weather Statement	FFC	Laurens	29 min
Oct 10, 3:01 PM EDT	Special Weather Statement	FFC	Houston	29 min
Oct 10, 3:07 PM EDT	Special Weather Statement	FFC	Schley, Sumter	23 min
Oct 10, 3:11 PM EDT	Tornado Warning	FFC	Houston, Macon, Peach	34 min
Oct 10, 3:19 PM EDT	Special Weather Statement	FFC	Laurens	26 min
Oct 10, 3:29 PM EDT	Tornado Warning	FFC	Crawford, Peach	20 min
Oct 10, 3:47 PM EDT	Special Weather Statement	FFC	Spalding	28 min
Oct 10, 3:51 PM EDT	Special Weather Statement	FFC	Crawford	24 min
Oct 10, 4:01 PM EDT	Tornado Warning Tornado observed	FFC	Crawford, Upson	14 min
Oct 10, 4:16 PM EDT	Special Weather Statement	FFC	Coweta	29 min
Oct 10, 4:19 PM EDT	Special Weather Statement	FFC	Jasper	26 min
Oct 10, 4:34 PM EDT	Special Weather Statement	FFC	Upson	26 min
Oct 10, 6:23 PM EDT	Special Weather Statement	FFC	Fulton	37 min
Oct 10, 7:20 PM EDT	Special Weather Statement	FFC	Douglas	25 min

Nearby

Tornado Warnings in Georgia, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.