Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 184, NWS Atlanta, GA

June 12, 2007Walton County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 12, 2007, 7:18 PM EDT for Walton County, Georgia. It was in force for 57 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: Jun 12, 2007, 7:18 PM EDT (23:18 UTC)
Expired: Jun 12, 2007, 8:15 PM EDT
In force: 57 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Walton County, GA

The radar

The Atlanta radar (KFFC), 96 km from the middle of the area, began a volume at 23:18 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
Jun 12, 7:35 PM EDT	HAIL 0.75	Monroe, GA

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 12, 2:23 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.3 hours before the alert went out and 91 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: 317 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 670 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KFFC 122318
SVRFFC
GAC297-130015-
/O.NEW.KFFC.SV.W.0184.070612T2318Z-070613T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
718 PM EDT TUE JUN 12 2007

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WALTON COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 815 PM EDT

* AT 714 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZED HAIL...AND
  DAMAGING WINDS UP TO 60 MPH.  THIS STORM WAS LOCATED 9 MILES
  NORTHEAST OF MONROE...MOVING SOUTH AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PANNELL AND SOCIAL CIRCLE.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN GEORGIA.

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 3382 8352 3390 8364 3392 8379 3369 8382
      3360 8368

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 10:43 PM EDT	Severe Thunderstorm Warning	FFC	Muscogee	32 min
Jun 11, 11:13 PM EDT	Severe Thunderstorm Warning	FFC	Muscogee	32 min
Jun 11, 11:40 PM EDT	Severe Thunderstorm Warning	FFC	Talbot	35 min
Jun 12, 12:01 AM EDT	Severe Thunderstorm Warning	FFC	Marion	29 min
Jun 12, 12:11 AM EDT	Severe Thunderstorm Warning	FFC	Taylor	64 min
Jun 12, 12:27 AM EDT	Severe Thunderstorm Warning	FFC	Harris	33 min
Jun 12, 12:52 AM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee	38 min
Jun 12, 1:15 AM EDT	Severe Thunderstorm Warning	FFC	Crawford	45 min
Jun 12, 1:52 AM EDT	Severe Thunderstorm Warning	FFC	Peach	38 min
Jun 12, 2:29 AM EDT	Severe Thunderstorm Warning	FFC	Houston, Peach	20 min
Jun 12, 2:38 AM EDT	Severe Thunderstorm Warning	FFC	Lamar, Pike	52 min
Jun 12, 3:49 AM EDT	Severe Thunderstorm Warning	FFC	Monroe	29 min
Jun 12, 5:04 AM EDT	Severe Thunderstorm Warning	FFC	Sumter	26 min
Jun 12, 5:17 AM EDT	Severe Thunderstorm Warning	FFC	Harris	28 min
Jun 12, 5:20 AM EDT	Severe Thunderstorm Warning	FFC	Stewart	40 min
Jun 12, 5:29 AM EDT	Severe Thunderstorm Warning	FFC	Sumter	16 min
Jun 12, 4:51 PM EDT	Severe Thunderstorm Warning	FFC	Cobb	24 min
Jun 12, 5:04 PM EDT	Severe Thunderstorm Warning	FFC	Dawson, Forsyth	19 min
Jun 12, 5:39 PM EDT	Severe Thunderstorm Warning	FFC	Banks	36 min
Jun 12, 5:52 PM EDT	Severe Thunderstorm Warning	FFC	Hall	13 min
Jun 12, 5:58 PM EDT	Severe Thunderstorm Warning	FFC	Jackson	47 min
Jun 12, 6:24 PM EDT	Severe Thunderstorm Warning	FFC	White	36 min
Jun 12, 6:34 PM EDT	Severe Thunderstorm Warning	FFC	Barrow	26 min
Jun 12, 6:35 PM EDT	Severe Thunderstorm Warning	FFC	Hall	25 min
Jun 12, 6:46 PM EDT	Severe Thunderstorm Warning	FFC	Jackson	14 min
Jun 12, 7:03 PM EDT	Severe Thunderstorm Warning	FFC	Barrow	27 min
Jun 12, 7:25 PM EDT	Severe Thunderstorm Warning	FFC	Gwinnett	35 min
Jun 12, 7:26 PM EDT	Severe Thunderstorm Warning	FFC	Forsyth	34 min
Jun 12, 7:52 PM EDT	Severe Thunderstorm Warning	FFC	DeKalb, Fulton, Rockdale	53 min
Jun 12, 7:56 PM EDT	Severe Thunderstorm Warning	FFC	Gwinnett	34 min
Jun 12, 7:58 PM EDT	Severe Thunderstorm Warning	FFC	Madison	32 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2007 Every severe thunderstorm warning in 2007

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.