Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 323, NWS Atlanta, GA

July 29, 2007Wilcox County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 29, 2007, 5:23 PM EDT for Wilcox County, Georgia. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 29, 2007, 5:23 PM EDT (21:23 UTC)
Expired: Jul 29, 2007, 5:49 PM EDT
In force: 26 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Wilcox County, GA

The radar

The Robins AFB radar (KJGX), 67 km from the middle of the area, began a volume at 21:23 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.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.4 hours before the alert went out and 176 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: 566 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 872 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 36 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 292123
SVRFFC
GAC315-292215-
/O.NEW.KFFC.SV.W.0323.070729T2123Z-070729T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
523 PM EDT SUN JUL 29 2007

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN WILCOX COUNTY IN CENTRAL GEORGIA

* UNTIL 615 PM EDT

* AT 521 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZED HAIL.  THIS
  STORM WAS LOCATED OVER NORTH CENTRAL WILCOX COUNTY...MOVING EAST AT
  15 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT PINEVIEW...AND AREAS JUST TO 
  THE SOUTH AND EAST OF PINEVIEW.

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 3217 8345 3205 8354 3194 8338 3206 8328

$$

1 follow-up statement

000 
WWUS52 KFFC 292149
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
548 PM EDT SUN JUL 29 2007

GAC315-292158-
/O.CAN.KFFC.SV.W.0323.000000T0000Z-070729T2215Z/
WILCOX GA-
548 PM EDT SUN JUL 29 2007

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WILCOX COUNTY HAS 
BEEN CANCELLED...

THE THUNDERSTORM IN NORTHERN WILCOX COUNTY NEAR PINEVIEW THAT 
PROMPTED A SEVERE THUNDERSTORM WARNING EARLIER...HAS WEAKENED AND IS 
NO LONGER EXPECTED TO PRODUCE SEVERE WEATHER. GUSTY WINDS UP TO 35 
MPH...MODERATE RAIN...AND OCCASIONAL CLOUD-TO-GROUND LIGHTNING WILL 
STILL BE POSSIBLE WITH THIS STORM FOR THE NEXT 15 TO 30 MINUTES.

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 3217 8345 3205 8354 3194 8338 3206 8328

$$


19

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 4:41 PM EDT	Severe Thunderstorm Warning	FFC	Laurens	34 min
Jul 29, 5:26 PM EDT	Severe Thunderstorm Warning	FFC	Spalding	32 min
Jul 29, 6:34 PM EDT	Severe Thunderstorm Warning	FFC	Montgomery	26 min
Jul 29, 6:52 PM EDT	Severe Thunderstorm Warning	FFC	Toombs	23 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.