Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 415, NWS Atlanta, GA

July 2, 2011Pike County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 2, 2011, 7:38 PM EDT for Pike County, Georgia. It was in force for 23 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: Jul 2, 2011, 7:38 PM EDT (23:38 UTC)
Expired: Jul 2, 2011, 8:01 PM EDT
In force: 23 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

County Pike County, GA

The radar

The Atlanta radar (KFFC), 32 km from the middle of the area, began a volume at 23:40 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 2, 7:45 PM EDT	TSTM WND DMG	Williamson, GA	THREE TREES DOWN...ONE ON A HOUSE...ONE ON A POWER LINE AND A ROAD...AND ANOTHER DOWN ON A ROAD. OCCURRED BETWEEN 745 PM AND 815 PM EDT.

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, 11.6 hours before the alert went out and 31 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: 1128 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 1177 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: -15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

135 
WUUS52 KFFC 022338
SVRFFC
GAC231-030030-
/O.NEW.KFFC.SV.W.0415.110702T2338Z-110703T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
738 PM EDT SAT JUL 2 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PIKE COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 830 PM EDT

* AT 736 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
  WILLIAMSON...MOVING SOUTHWEST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ZEBULON...MEANSVILLE...CONCORD AND MOLENA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT 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 3305 8452 3309 8452 3310 8453 3313 8451
      3317 8451 3321 8445 3321 8440 3319 8437
      3319 8428 3299 8427 3299 8448 3297 8450
      3297 8452 3304 8454
TIME...MOT...LOC 2338Z 033DEG 10KT 3317 8437

$$

1 follow-up statement

179 
WWUS52 KFFC 030001
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
801 PM EDT SAT JUL 2 2011

GAC231-030010-
/O.CAN.KFFC.SV.W.0415.000000T0000Z-110703T0030Z/
PIKE GA-
801 PM EDT SAT JUL 2 2011

...THE SEVERE THUNDERSTORM WARNING FOR PIKE COUNTY IS CANCELLED...

THE THUNDERSTORM HAS WEAKENED AND IS NO LONGER EXPECTED TO PRODUCE 
SEVERE WEATHER. HOWEVER...LIGHT TO MODERATE RAIN AND OCCASIONAL 
CLOUD-TO-GROUND LIGHTNING WILL CONTINUE ACROSS PARTS OF PIKE COUNTY 
FOR THE NEXT 15 TO 30 MINUTES.

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 3305 8452 3309 8452 3310 8453 3313 8451
      3317 8451 3321 8445 3321 8440 3319 8437
      3319 8428 3299 8427 3299 8448 3297 8450
      3297 8452 3304 8454
TIME...MOT...LOC 0000Z 033DEG 10KT 3312 8441

$$



19

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 8:09 PM EDT	Special Weather Statement	FFC	White	36 min
Jul 1, 8:15 PM EDT	Severe Thunderstorm Warning	FFC	White	30 min
Jul 2, 3:08 PM EDT	Special Weather Statement	FFC	Washington	37 min
Jul 2, 3:24 PM EDT	Severe Thunderstorm Warning	FFC	Washington	36 min
Jul 2, 4:09 PM EDT	Special Weather Statement	FFC	Washington	36 min
Jul 2, 4:59 PM EDT	Special Weather Statement	FFC	Hancock	31 min
Jul 2, 6:14 PM EDT	Special Weather Statement	FFC	Butts	31 min
Jul 2, 6:16 PM EDT	Special Weather Statement	FFC	Butts	29 min
Jul 2, 6:36 PM EDT	Special Weather Statement	FFC	Muscogee	24 min
Jul 2, 6:45 PM EDT	Special Weather Statement	FFC	Lamar	30 min
Jul 2, 6:53 PM EDT	Severe Thunderstorm Warning	FFC	Lamar, Spalding	22 min
Jul 2, 7:02 PM EDT	Special Weather Statement	FFC	Newton	28 min
Jul 2, 7:09 PM EDT	Special Weather Statement	FFC	Upson	36 min
Jul 2, 7:12 PM EDT	Special Weather Statement	FFC	Muscogee	33 min
Jul 2, 7:16 PM EDT	Severe Thunderstorm Warning	FFC	Lamar	29 min
Jul 2, 7:29 PM EDT	Special Weather Statement	FFC	Pike	31 min
Jul 2, 7:32 PM EDT	Special Weather Statement	FFC	Clayton, Fayette	28 min
Jul 2, 7:50 PM EDT	Special Weather Statement	FFC	Oglethorpe	25 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.