Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 102, NWS Atlanta, GA

May 6, 2012Cobb County, Paulding County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 6, 2012, 8:24 PM EDT for Cobb County, Paulding County, Georgia. It was in force for 51 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: May 6, 2012, 8:24 PM EDT (00:24 UTC)
Expired: May 6, 2012, 9:15 PM EDT
In force: 51 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Cobb County, GA, Paulding County, GA

The radar

The Atlanta radar (KFFC), 75 km from the middle of the area, began a volume at 00:25 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 00:00Z, 0.4 hours before the alert went out and 76 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: 632 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1817 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: -4 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.

809 
WUUS52 KFFC 070024
SVRFFC
GAC067-223-070115-
/O.NEW.KFFC.SV.W.0102.120507T0024Z-120507T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
824 PM EDT SUN MAY 6 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN COBB COUNTY IN NORTH CENTRAL GEORGIA
  NORTHEASTERN PAULDING COUNTY IN NORTHWEST GEORGIA

* UNTIL 915 PM EDT

* AT 820 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL.  THIS
  STORM WAS LOCATED 11 MILES NORTHEAST OF DALLAS...MOVING SOUTH AT 15
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BURNT
  HICKORY RIDGE...CROSS ROADS...NEW HOPE AND LOST MOUNTAIN PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3408 8488 3408 8470 3407 8468 3388 8466
      3389 8490
TIME...MOT...LOC 0024Z 001DEG 12KT 3405 8476

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 8:02 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Union	28 min
May 6, 8:05 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee, Cobb	40 min
May 6, 8:09 PM EDT	Special Weather Statement	FFC	Coweta	36 min
May 6, 8:17 PM EDT	Special Weather Statement	FFC	Meriwether	28 min
May 6, 8:22 PM EDT	Special Weather Statement	FFC	Fannin, Gilmer	23 min
May 6, 8:40 PM EDT	Special Weather Statement	FFC	Carroll	35 min
May 6, 8:41 PM EDT	Special Weather Statement	FFC	Meriwether	34 min
May 6, 8:42 PM EDT	Special Weather Statement	FFC	Fannin	33 min
May 6, 8:54 PM EDT	Special Weather Statement	FFC	Coweta	36 min
May 6, 9:14 PM EDT	Special Weather Statement	FFC	Heard	31 min
May 6, 9:38 PM EDT	Special Weather Statement	FFC	Carroll, Heard	37 min
May 6, 9:53 PM EDT	Severe Thunderstorm Warning	FFC	Heard, Troup	37 min
May 7, 4:53 PM EDT	Special Weather Statement	FFC	Floyd	52 min
May 7, 6:32 PM EDT	Special Weather Statement	FFC	Murray	28 min
May 7, 6:34 PM EDT	Special Weather Statement	FFC	Crawford	41 min
May 7, 7:20 PM EDT	Special Weather Statement	FFC	Marion, Schley	25 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012 Every severe thunderstorm warning in 2012

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.