Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 138, NWS Atlanta, GA

June 8, 2007Cherokee County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 8, 2007, 4:39 PM EDT for Cherokee County, Georgia. It was in force for 36 min. 3 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 8, 2007, 4:39 PM EDT (20:39 UTC)
Expired: Jun 8, 2007, 5:15 PM EDT
In force: 36 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Cherokee County, GA

The radar

The Atlanta radar (KFFC), 104 km from the middle of the area, began a volume at 20:40 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
Jun 8, 4:40 PM EDT	HAIL 0.25	7 E Waleska, GA	EMA DIRECTOR REPORTS PEA-SIZED HAIL 7 MILES EAST OF WALESKA.
Jun 8, 4:55 PM EDT	HAIL 0.25	Canton, GA	911 CENTER REPORTED RECEIVING CALLS OF LIGHTNING AND HAIL OF UNKNOWN SIZE.
Jun 8, 4:55 PM EDT	HAIL 0.75	5 Nw Canton, GA	SPOTTER REPORTED HEAVY RAIN AND DIME TO PENNY SIZED HAIL 5 MILES NORTHWEST OF CANTON.

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, 8.7 hours before the alert went out and 103 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: 476 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 766 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -78 m²/s²
0-3 km storm-relative helicity: -46 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 082039
SVRFFC
GAC057-082115-
/O.NEW.KFFC.SV.W.0138.070608T2039Z-070608T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
439 PM EDT FRI JUN 8 2007

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 515 PM EDT

* AT 436 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY SIZED
  HAIL...AND DAMAGING WINDS UP TO 60 MPH.  THESE STORMS WERE LOCATED
  ALONG A LINE EXTENDING FROM BALL GROUND TO WALESKA...MOVING
  SOUTHEAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CANTON...CHEROKEE...BUFFINGTON AND HOLLY SPRINGS.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT 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 3425 8429 3412 8452 3424 8464 3432 8464
      3438 8456 3438 8441 3437 8440 3438 8436
      3428 8428

$$


19

1 follow-up statement

000 
WWUS52 KFFC 082121
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
519 PM EDT FRI JUN 8 2007

GAC057-082129-
/O.EXP.KFFC.SV.W.0138.000000T0000Z-070608T2115Z/
CHEROKEE GA-
519 PM EDT FRI JUN 8 2007

...THE SEVERE THUNDERSTORM WARNING FOR CHEROKEE COUNTY EXPIRED AT 515
PM EDT...

AT 514 PM EDT...THE THUNDERSTORMS WHICH EARLIER PROMPTED THE WARNING 
HAVE DIMINISHED CONSIDERABLY IN EASTERN CHEROKEE COUNTY AND ARE NO 
LONGER SEVERE.

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 3425 8429 3412 8452 3424 8464 3432 8464
      3438 8456 3438 8441 3437 8440 3438 8436
      3428 8428

$$


19

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 1:45 PM EDT	Severe Thunderstorm Warning	FFC	Bartow	30 min
Jun 8, 3:05 PM EDT	Severe Thunderstorm Warning	FFC	Polk	25 min
Jun 8, 4:17 PM EDT	Severe Thunderstorm Warning	FFC	Fulton	28 min
Jun 8, 4:22 PM EDT	Severe Thunderstorm Warning	FFC	Coweta	38 min
Jun 8, 4:30 PM EDT	Severe Thunderstorm Warning	FFC	Fayette	45 min
Jun 8, 4:55 PM EDT	Severe Thunderstorm Warning	FFC	Clayton	35 min
Jun 8, 5:04 PM EDT	Severe Thunderstorm Warning	FFC	Walton	26 min
Jun 8, 5:29 PM EDT	Severe Thunderstorm Warning	FFC	Gwinnett	46 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.