Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 409, NWS Atlanta, GA

July 1, 2011Coweta County, Fayette County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 1, 2011, 5:25 PM EDT for Coweta County, Fayette County, Georgia. It was in force for 35 min. 2 reports 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: Jul 1, 2011, 5:25 PM EDT (21:25 UTC)
Expired: Jul 1, 2011, 6:00 PM EDT
In force: 35 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Coweta County, GA, Fayette County, GA

The radar

The Atlanta radar (KFFC), 9 km from the middle of the area, began a volume at 21:26 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
Jul 1, 5:40 PM EDT	TSTM WND DMG	Sharpsburg, GA	NWS EMPLOYEE OBSERVES A COUPLE OF TREES DOWN ON THE EAST SIDE OF SHARPSBURG NEAR GEORGIA HIGHWAY 54.
Jul 1, 5:40 PM EDT	HAIL 0.25	2 S Peachtree City, GA

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, 9.4 hours before the alert went out and 11 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: 1954 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1094 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 55 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.

504 
WUUS52 KFFC 012125
SVRFFC
GAC077-113-012200-
/O.NEW.KFFC.SV.W.0409.110701T2125Z-110701T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
525 PM EDT FRI JUL 1 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN FAYETTE COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHEASTERN COWETA COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 600 PM EDT

* AT 522 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 SENOIA...
  MOVING SOUTH AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BROOKS AND HARALSON.

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...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.

&&

LAT...LON 3338 8440 3332 8438 3326 8444 3325 8451
      3322 8451 3322 8465 3323 8467 3322 8469
      3323 8471 3338 8471
TIME...MOT...LOC 2125Z 000DEG 9KT 3332 8458

$$

2 follow-up statements

802 
WWUS52 KFFC 012150
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
550 PM EDT FRI JUL 1 2011

GAC077-113-012200-
/O.CON.KFFC.SV.W.0409.000000T0000Z-110701T2200Z/
COWETA GA-FAYETTE GA-
550 PM EDT FRI JUL 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SOUTH CENTRAL FAYETTE AND SOUTHEASTERN COWETA COUNTIES...

AT 543 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED 
HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED 
BETWEEN PEACHTREE CITY AND SENOIA...MOVING SOUTH AT 10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
HARALSON...AND SHARPSBURG.

DIME-SIZED HAIL AND WIND GUSTS TO 52 MPH WERE OBSERVED AT THE 
NATIONAL WEATHER SERVICE FORECAST OFFICE IN PEACHTREE CITY WITHIN 
THE PAST 15 MINUTES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3338 8471 3338 8449 3327 8443 3325 8451
      3322 8451 3322 8465 3323 8466 3322 8469
      3323 8471
TIME...MOT...LOC 2148Z 000DEG 9KT 3326 8458

$$

383 
WWUS52 KFFC 012158
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
558 PM EDT FRI JUL 1 2011

GAC077-113-012207-
/O.EXP.KFFC.SV.W.0409.000000T0000Z-110701T2200Z/
COWETA GA-FAYETTE GA-
558 PM EDT FRI JUL 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL FAYETTE AND 
SOUTHEASTERN COWETA COUNTIES WILL BE ALLOWED TO EXPIRE AT 600 PM 
EDT...

AT 553 PM EDT...A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER 
SIZED HAIL AND DAMAGING WINDS UP TO 60 MPH...WAS LOCATED NEAR 
BETWEEN PEACHTREE CITY AND SENOIA...MOVING SOUTH AT 10 MPH.

WIND GUSTS TO 50 MPH AND PEA-SIZED HAIL WILL REMAIN POSSIBLE WITH 
THIS THUNDERSTORM FOR ANOTHER 15 TO 20 MINUTES.

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.

LAT...LON 3338 8471 3338 8449 3327 8443 3325 8451
      3322 8451 3322 8465 3323 8466 3322 8469
      3323 8471
TIME...MOT...LOC 2157Z 000DEG 9KT 3324 8458

$$



19

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 8:16 PM EDT	Severe Thunderstorm Warning	FFC	Johnson, Laurens, Treutlen	44 min
Jun 30, 9:24 PM EDT	Special Weather Statement	FFC	Twiggs	36 min
Jun 30, 9:56 PM EDT	Special Weather Statement	FFC	Bibb, Twiggs	49 min
Jul 1, 2:52 PM EDT	Special Weather Statement	FFC	Bleckley	38 min
Jul 1, 3:23 PM EDT	Special Weather Statement	FFC	Baldwin	37 min
Jul 1, 3:24 PM EDT	Special Weather Statement	FFC	Lamar	36 min
Jul 1, 3:28 PM EDT	Special Weather Statement	FFC	Meriwether	32 min
Jul 1, 3:49 PM EDT	Special Weather Statement	FFC	Washington	26 min
Jul 1, 4:05 PM EDT	Special Weather Statement	FFC	Fulton	25 min
Jul 1, 4:41 PM EDT	Special Weather Statement	FFC	Chattahoochee	34 min
Jul 1, 4:45 PM EDT	Special Weather Statement	FFC	Spalding	30 min
Jul 1, 4:48 PM EDT	Special Weather Statement	FFC	Spalding	27 min
Jul 1, 5:22 PM EDT	Special Weather Statement	FFC	Henry	38 min
Jul 1, 5:27 PM EDT	Severe Thunderstorm Warning	FFC	Henry	33 min
Jul 1, 5:56 PM EDT	Special Weather Statement	FFC	Jones	34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.