Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 434, NWS Atlanta, GA

July 9, 2011Bibb County, Crawford County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 9, 2011, 5:19 PM EDT for Bibb County, Crawford County, Georgia. It was in force for 41 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 9, 2011, 5:19 PM EDT (21:19 UTC)
Expired: Jul 9, 2011, 6:00 PM EDT
In force: 41 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Bibb County, GA, Crawford County, GA

The radar

The Robins AFB radar (KJGX), 44 km from the middle of the area, began a volume at 21:19 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 9, 5:38 PM EDT	TSTM WND DMG	2 W Macon, GA	LINES DOWN ON EARNEST STREET.
Jul 9, 5:52 PM EDT	TSTM WND DMG	Macon, GA	ONE TREE DOWN ON TUCKER AND PEAK ROAD.

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, 9.3 hours before the alert went out and 93 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: 1773 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 847 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: -68 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.

879 
WUUS52 KFFC 092119
SVRFFC
GAC021-079-092200-
/O.NEW.KFFC.SV.W.0434.110709T2119Z-110709T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
519 PM EDT SAT JUL 9 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BIBB COUNTY IN CENTRAL GEORGIA
  CRAWFORD COUNTY IN CENTRAL GEORGIA

* UNTIL 600 PM EDT

* AT 514 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS UP
  TO 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 
  10 MILES NORTHWEST OF MACON TO SANDY POINT TO ROBERTA...MOVING EAST
  AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED 
  LIZELLA...LAKE TOBESOFKEE...WESLEYAN...AND ARKWRIGHT

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...EXCESSIVE CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. 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 3267 8410 3268 8410 3270 8420 3272 8419
      3277 8397 3285 8390 3295 8372 3289 8365
      3289 8360 3287 8358 3288 8357 3282 8349
      3274 8357 3274 8360 3266 8360 3269 8377
      3261 8390
TIME...MOT...LOC 2117Z 268DEG 13KT 3294 8372 3277 8386
          3274 8403

$$

2 follow-up statements

800 
WWUS52 KFFC 092130
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
530 PM EDT SAT JUL 9 2011

GAC021-079-092200-
/O.CON.KFFC.SV.W.0434.000000T0000Z-110709T2200Z/
BIBB GA-CRAWFORD GA-
530 PM EDT SAT JUL 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR CRAWFORD AND BIBB COUNTIES...

AT 524 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS UP TO 70 MPH. THESE STORMS WERE LOCATED ALONG A
LINE EXTENDING FROM ARKWRIGHT TO LIZELLA TO KNOXVILLE...MOVING EAST
AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WESLEYAN...PAYNE CITY...FRIENDSHIP...MACON...FRANKLINTON...MIDDLE
GEORGIA REGIONAL AIRPORT...CROSS KEYS...SKIPPERTON...RUTLAND AND JACK
BROWN ESTATES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WIDESPREAD WIND DAMAGE WITH THESE THUNDERSTORMS CAN BE EXPECTED AS 
THEY MOVE ACROSS WESTERN BIBB COUNTY...INCLUDING AREAS NEAR LIZELLA 
AND LAKE TOBESOFKEE.

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 3267 8410 3268 8410 3270 8420 3272 8419
      3277 8397 3285 8390 3295 8372 3289 8365
      3289 8360 3287 8358 3288 8357 3282 8349
      3274 8357 3274 8360 3266 8360 3269 8377
      3261 8390
TIME...MOT...LOC 2129Z 268DEG 13KT 3294 8367 3277 8381
          3274 8398

$$



19

041 
WWUS52 KFFC 092202
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
602 PM EDT SAT JUL 9 2011

GAC021-079-092211-
/O.EXP.KFFC.SV.W.0434.000000T0000Z-110709T2200Z/
BIBB GA-CRAWFORD GA-
602 PM EDT SAT JUL 9 2011

...THE SEVERE THUNDERSTORM WARNING FOR CRAWFORD AND BIBB COUNTIES
EXPIRED AT 600 PM EDT...

AT 557 PM EDT...THE THUNDERSTORMS THAT EARLIER PROMPTED THE WARNING 
FOR BIBB AND CRAWFORD COUNTY HAVE WEAKENED AND ARE NO LONGER SEVERE.

IF YOU SAW 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 3267 8410 3268 8410 3270 8420 3272 8419
      3277 8397 3285 8390 3295 8372 3289 8365
      3289 8360 3287 8358 3288 8357 3282 8349
      3274 8357 3274 8360 3266 8360 3269 8377
      3261 8390
TIME...MOT...LOC 2130Z 268DEG 13KT 3294 8367 3277 8381
          3274 8398

$$



19

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 8:13 PM EDT	Special Weather Statement	FFC	Jasper	32 min
Jul 8, 8:21 PM EDT	Special Weather Statement	FFC	Putnam	39 min
Jul 8, 8:24 PM EDT	Special Weather Statement	FFC	Douglas	51 min
Jul 8, 8:27 PM EDT	Severe Thunderstorm Warning	FFC	Jasper, Morgan, Putnam	38 min
Jul 8, 8:50 PM EDT	Special Weather Statement	FFC	Fulton	25 min
Jul 8, 9:17 PM EDT	Special Weather Statement	FFC	Greene, Hancock	28 min
Jul 9, 4:15 AM EDT	Special Weather Statement	FFC	Pickens	30 min
Jul 9, 1:11 PM EDT	Special Weather Statement	FFC	Clayton	49 min
Jul 9, 2:50 PM EDT	Special Weather Statement	FFC	Jefferson	25 min
Jul 9, 3:51 PM EDT	Special Weather Statement	FFC	Baldwin	39 min
Jul 9, 3:53 PM EDT	Special Weather Statement	FFC	Pulaski	52 min
Jul 9, 4:35 PM EDT	Special Weather Statement	FFC	Jones	25 min
Jul 9, 4:40 PM EDT	Special Weather Statement	FFC	Upson	35 min
Jul 9, 4:47 PM EDT	Special Weather Statement	FFC	Washington	28 min
Jul 9, 4:54 PM EDT	Severe Thunderstorm Warning	FFC	Jones	36 min
Jul 9, 4:58 PM EDT	Special Weather Statement	FFC	Crawford	47 min
Jul 9, 5:03 PM EDT	Special Weather Statement	FFC	Troup	27 min
Jul 9, 5:25 PM EDT	Special Weather Statement	FFC	Wilkinson	35 min
Jul 9, 5:42 PM EDT	Special Weather Statement	FFC	Wilkinson	33 min
Jul 9, 5:50 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Fayette	40 min
Jul 9, 5:58 PM EDT	Special Weather Statement	FFC	Johnson	32 min
Jul 9, 6:18 PM EDT	Special Weather Statement	FFC	Wilkinson	42 min
Jul 9, 6:25 PM EDT	Special Weather Statement	FFC	Meriwether, Pike, Spalding	35 min
Jul 9, 6:37 PM EDT	Special Weather Statement	FFC	Treutlen	38 min
Jul 9, 6:53 PM EDT	Special Weather Statement	FFC	Emanuel	37 min
Jul 9, 7:15 PM EDT	Special Weather Statement	FFC	White	45 min
Jul 9, 7:36 PM EDT	Special Weather Statement	FFC	Harris	24 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.