Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 90, NWS Atlanta, GA

May 6, 2012Harris County, Muscogee County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 6, 2012, 12:23 PM EDT for Harris County, Muscogee County, Georgia. It was in force for 37 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: May 6, 2012, 12:23 PM EDT (16:23 UTC)
Expired: May 6, 2012, 1:00 PM EDT
In force: 37 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Harris County, GA, Muscogee County, GA

The radar

The Atlanta radar (KFFC), 84 km from the middle of the area, began a volume at 16:26 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
May 6, 12:30 PM EDT	HAIL 1	Midland, GA	BROADCAST MEDIA REPORTED DIME TO QUARTER SIZED HAIL IN MIDLAND.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 4.4 hours before the alert went out and 86 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: 1435 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1105 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: -30 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.

667 
WUUS52 KFFC 061623
SVRFFC
GAC145-215-061700-
/O.NEW.KFFC.SV.W.0090.120506T1623Z-120506T1700Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1223 PM EDT SUN MAY 6 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HARRIS COUNTY IN WEST CENTRAL GEORGIA
  NORTHEASTERN MUSCOGEE COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 100 PM EDT

* AT 1221 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...AND
  DAMAGING WINDS UP TO 60 MPH.  THIS STORM WAS LOCATED NEAR UPATOI...
  MOVING SOUTH AT 20 MPH.

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

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 3273 8476 3256 8468 3249 8485 3267 8496
TIME...MOT...LOC 1623Z 340DEG 17KT 3258 8481

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 9:02 PM EDT	Special Weather Statement	FFC	Heard	28 min
May 6, 10:15 AM EDT	Special Weather Statement	FFC	Heard	30 min
May 6, 10:37 AM EDT	Severe Thunderstorm Warning	FFC	Heard	23 min
May 6, 11:04 AM EDT	Special Weather Statement	FFC	Troup	26 min
May 6, 11:59 AM EDT	Special Weather Statement	FFC	Harris	46 min
May 6, 12:12 PM EDT	Special Weather Statement	FFC	Chattahoochee, Muscogee	48 min
May 6, 12:43 PM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee, Muscogee	32 min
May 6, 1:10 PM EDT	Special Weather Statement	FFC	Marion	50 min
May 6, 1:38 PM EDT	Severe Thunderstorm Warning	FFC	Stewart, Webster	52 min
May 6, 1:50 PM EDT	Severe Thunderstorm Warning	FFC	Marion, Schley	40 min
May 6, 6:17 PM EDT	Special Weather Statement	FFC	Polk	28 min
May 6, 6:19 PM EDT	Special Weather Statement	FFC	Pike	26 min
May 6, 6:26 PM EDT	Special Weather Statement	FFC	Pickens	34 min
May 6, 6:29 PM EDT	Special Weather Statement	FFC	Upson	31 min
May 6, 6:32 PM EDT	Special Weather Statement	FFC	Fulton	28 min
May 6, 6:34 PM EDT	Special Weather Statement	FFC	Walker	26 min
May 6, 6:38 PM EDT	Severe Thunderstorm Warning	FFC	Douglas, Fulton	52 min
May 6, 6:40 PM EDT	Special Weather Statement	FFC	Polk	35 min
May 6, 6:43 PM EDT	Special Weather Statement	FFC	Pike	32 min
May 6, 6:46 PM EDT	Severe Thunderstorm Warning	FFC	Pickens	44 min
May 6, 6:52 PM EDT	Special Weather Statement	FFC	Fayette	38 min
May 6, 6:55 PM EDT	Special Weather Statement	FFC	Cobb	35 min
May 6, 7:00 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee, Pickens	30 min
May 6, 7:07 PM EDT	Special Weather Statement	FFC	Upson	38 min
May 6, 7:18 PM EDT	Severe Thunderstorm Warning	FFC	Haralson, Polk	22 min
May 6, 7:19 PM EDT	Special Weather Statement	FFC	Crawford	26 min
May 6, 7:20 PM EDT	Special Weather Statement	FFC	Union	25 min
May 6, 7:22 PM EDT	Special Weather Statement	FFC	Cherokee	38 min
May 6, 7:25 PM EDT	Special Weather Statement	FFC	Cobb	35 min
May 6, 7:32 PM EDT	Severe Thunderstorm Warning	FFC	Cobb	43 min
May 6, 7:37 PM EDT	Special Weather Statement	FFC	Union	38 min
May 6, 7:41 PM EDT	Severe Thunderstorm Warning	FFC	Meriwether, Pike, Upson	34 min
May 6, 7:51 PM EDT	Special Weather Statement	FFC	Peach	24 min
May 6, 7:55 PM EDT	Special Weather Statement	FFC	Cherokee	35 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.