Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 207, NWS Atlanta, GA

June 19, 2007Clayton County, DeKalb County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 19, 2007, 4:18 PM EDT for Clayton County, DeKalb County, Georgia. It was in force for 42 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 19, 2007, 4:18 PM EDT (20:18 UTC)
Expired: Jun 19, 2007, 5:00 PM EDT
In force: 42 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

Counties Clayton County, GA, DeKalb County, GA

The radar

The Atlanta radar (KFFC), 44 km from the middle of the area, began a volume at 20:21 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 19, 4:25 PM EDT	TSTM WND DMG	3 S Avondale Estates, GA	THREE TREES BLOWN DOWN IN THE BOULDERCREST AREA.

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, 8.3 hours before the alert went out and 40 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: 255 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 747 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -61 m²/s²
0-3 km storm-relative helicity: -38 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 192018
SVRFFC
GAC063-089-192100-
/O.NEW.KFFC.SV.W.0207.070619T2018Z-070619T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
418 PM EDT TUE JUN 19 2007

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN CLAYTON COUNTY IN NORTH CENTRAL GEORGIA
  DEKALB COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 500 PM EDT

* AT 416 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO 60
  MPH.  THIS STORM WAS LOCATED NEAR CONLEY...MOVING NORTHEAST AT 30
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  GRESHAM PARK...PANTHERSVILLE...CANDLER-MCAFEE...DECATUR...BELVEDERE
  PARK...AVONDALE ESTATES...NORTH DECATUR...SCOTTDALE...REDAN...
  CLARKSTON...PINE LAKE...LITHONIA...STONE MOUNTAIN AND TUCKER.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING. 
PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG 
BUILDING AND AWAY FROM WINDOWS.

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 3362 8440 3350 8427 3358 8416 3374 8402
      3391 8426

$$

1 follow-up statement

000 
WWUS52 KFFC 192046
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
443 PM EDT TUE JUN 19 2007

GAC063-192053-
/O.CAN.KFFC.SV.W.0207.000000T0000Z-070619T2100Z/
CLAYTON GA-
443 PM EDT TUE JUN 19 2007

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

RADAR INDICATED THAT THE SEVERE THUNDERSTORM HAD EXITED CLAYTON 
COUNTY.

IF YOU OBSERVED DOWNED TREES 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 3364 8435 3363 8418 3362 8412 3374 8402
      3391 8426

$$

GAC089-192100-
/O.CON.KFFC.SV.W.0207.000000T0000Z-070619T2100Z/
DEKALB GA-
443 PM EDT TUE JUN 19 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR DEKALB COUNTY...

AT 439 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR BELVEDERE
PARK...MOVING NORTHEAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PINE
LAKE...CLARKSTON...STONE MOUNTAIN AND TUCKER.

LAW ENFORCEMENT REPORTED TREES DOWN IN THE BOULDERCREST AREA OF 
CANDLER-MCAFEE.

IF YOU SEE WIND DAMAGE  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 3364 8435 3363 8418 3362 8412 3374 8402
      3391 8426

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 4:22 PM EDT	Severe Thunderstorm Warning	FFC	Cobb	38 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.