Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 245, NWS Atlanta, GA

June 29, 2007Chattooga County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 29, 2007, 8:01 PM EDT for Chattooga County, Georgia. It was in force for 44 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: Jun 29, 2007, 8:01 PM EDT (00:01 UTC)
Expired: Jun 29, 2007, 8:45 PM EDT
In force: 44 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Chattooga County, GA

The radar

The Northeast Alabama radar (KHTX), 82 km from the middle of the area, began a volume at 00:04 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 29, 8:20 PM EDT	TSTM WND DMG	Summerville, GA	REPORTED SEVERAL TREES AND SEVERAL POWERLINES DOWN BETWEEN 820PM AND 930PM.
Jun 29, 8:35 PM EDT	TSTM WND DMG	Cloudland, GA	SEVERAL TREES DOWN COUNTYWIDE.

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 00:00Z, 0.0 hours before the alert went out and 147 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: 654 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1370 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 4 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.

000 
WUUS52 KFFC 300002
SVRFFC
GAC055-300045-
/O.NEW.KFFC.SV.W.0245.070630T0001Z-070630T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
801 PM EDT FRI JUN 29 2007

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN CHATTOOGA COUNTY IN NORTHWEST GEORGIA

* UNTIL 845 PM EDT

* AT 757 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZED
  HAIL...AND DAMAGING WINDS UP TO 60 MPH.  THESE STORMS WERE LOCATED
  ALONG A LINE EXTENDING FROM WEST OF TRION TO WEST OF 
  CHATTOOGAVILLE...MOVING SOUTHEAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO JAMES
  H. FLOYD STATE PARK...BERRYTON AND SUMMERVILLE.

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.

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 3459 8526 3452 8527 3440 8531 3433 8538
      3429 8539 3429 8546 3452 8550 3453 8551
      3458 8551

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 8:26 PM EDT	Severe Thunderstorm Warning	FFC	Forsyth, Gwinnett	49 min
Jun 29, 8:40 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga	36 min
Jun 30, 4:34 PM EDT	Severe Thunderstorm Warning	FFC	Dooly	29 min
Jun 30, 6:20 PM EDT	Severe Thunderstorm Warning	FFC	Stewart, Webster	40 min
Jun 30, 6:42 PM EDT	Severe Thunderstorm Warning	FFC	Marion	48 min
Jun 30, 7:41 PM EDT	Severe Thunderstorm Warning	FFC	Jefferson	49 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.