Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 192, NWS Atlanta, GA

June 12, 2007Henry County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 12, 2007, 9:14 PM EDT for Henry County, Georgia. It was in force for 31 min. 6 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: Jun 12, 2007, 9:14 PM EDT (01:14 UTC)
Expired: Jun 12, 2007, 9:45 PM EDT
In force: 31 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Henry County, GA

The radar

The Atlanta radar (KFFC), 37 km from the middle of the area, began a volume at 01:17 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, 9:15 PM EDT	TSTM WND DMG	4 Sw Mcdonough, GA	COUPLE TREES AND AN EXCESSIVE AMOUNT OF BRANCHES AND LIMBS DOWN.
Jun 12, 9:15 PM EDT	HAIL 0.75	Mcdonough, GA
Jun 12, 9:15 PM EDT	HAIL 1.75	Mcdonough, GA	HAIL REPORTED AT A LOCATION OFF OF HWY 20. HAIL CAUSED MODERATE DAMAGE TO CHAIN LINK FENCE.
Jun 12, 9:20 PM EDT	HAIL 0.88	Mcdonough, GA
Jun 12, 9:20 PM EDT	HAIL 1	4 Sw Mcdonough, GA	PEA TO QUARTER SIZED HAIL REPORTED.
Jun 12, 9:25 PM EDT	HAIL 0.75	Mcdonough, 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 00:00Z, 1.2 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: 1447 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1268 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KFFC 130113
SVRFFC
GAC151-130145-
/O.NEW.KFFC.SV.W.0192.070613T0114Z-070613T0145Z/

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

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HENRY COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 945 PM EDT

* AT 909 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 NEAR
  MCDONOUGH...MOVING SOUTH AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HAMPTON...LOCUST GROVE AND LUELLA.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

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 3332 8414 3333 8415 3335 8431 3341 8430
      3344 8427 3353 8426 3350 8405 3343 8407
      3332 8408 3331 8410

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 8:30 PM EDT	Severe Thunderstorm Warning	FFC	Henry	45 min
Jun 12, 9:11 PM EDT	Severe Thunderstorm Warning	FFC	Fulton	20 min
Jun 12, 9:21 PM EDT	Severe Thunderstorm Warning	FFC	Putnam	39 min
Jun 12, 9:23 PM EDT	Severe Thunderstorm Warning	FFC	Spalding	52 min
Jun 12, 9:42 PM EDT	Severe Thunderstorm Warning	FFC	Lamar	48 min
Jun 12, 10:09 PM EDT	Severe Thunderstorm Warning	FFC	Upson	47 min
Jun 12, 10:39 PM EDT	Severe Thunderstorm Warning	FFC	Talbot	36 min
Jun 12, 11:24 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	23 min
Jun 13, 1:10 AM EDT	Severe Thunderstorm Warning	FFC	Stewart	35 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.