Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 73, NWS Atlanta, GA

April 12, 2007Washington County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 12, 2007, 1:35 AM EDT for Washington County, Georgia. It was in force for 25 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: Apr 12, 2007, 1:35 AM EDT (05:35 UTC)
Expired: Apr 12, 2007, 2:00 AM EDT
In force: 25 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Washington County, GA

What was reported inside it

Time	Report	Where	Remark
Apr 12, 1:40 AM EDT	HAIL 0.75	2 W Sandersville, GA
Apr 12, 1:45 AM EDT	HAIL 1	Sandersville, GA	MEASURED AT THE SANDERSVILLE FIRE DEPARTMENT.

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
Apr 11, 11:01 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 5.6 hours before the alert went out and 166 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: 365 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 807 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 466 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KFFC 120535
SVRFFC
GAC303-120600-
/O.NEW.KFFC.SV.W.0073.070412T0535Z-070412T0600Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
135 AM EDT THU APR 12 2007

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL WASHINGTON COUNTY IN EAST CENTRAL GEORGIA

* UNTIL 200 AM EDT

* AT 133 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZED HAIL.  THIS
  STORM WAS LOCATED NEAR SANDERSVILLE...MOVING EAST AT 40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  TENNILLE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM EDT
THURSDAY MORNING FOR EASTERN 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 3306 8290 3289 8289 3290 8252 3311 8265

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 8:08 PM EDT	Severe Thunderstorm Warning	FFC	Crisp, Wilcox	17 min
Apr 11, 8:17 PM EDT	Tornado Warning	FFC	Marion, Stewart, Webster	43 min
Apr 11, 8:35 PM EDT	Tornado Warning	FFC	Schley, Sumter	55 min
Apr 11, 8:49 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Treutlen	26 min
Apr 11, 9:10 PM EDT	Severe Thunderstorm Warning	FFC	Macon	35 min
Apr 11, 10:54 PM EDT	Severe Thunderstorm Warning	FFC	Jasper, Morgan	36 min
Apr 11, 11:36 PM EDT	Severe Thunderstorm Warning	FFC	Morgan, Newton, Walton	39 min
Apr 12, 1:27 AM EDT	Severe Thunderstorm Warning	FFC	Warren	18 min
Apr 12, 1:48 AM EDT	Dense Fog Advisory	FFC	Banks, Barrow, Bartow, Butts, Carroll, Catoosa and 46 more	2 hr
Apr 12, 2:44 AM EDT	Severe Thunderstorm Warning	FFC	Jefferson	31 min
Apr 12, 5:05 AM EDT	Dense Fog Advisory	FFC	Banks, Barrow, Bartow, Butts, Carroll, Catoosa and 46 more	3 hr
Apr 12, 5:05 AM EDT	Wind Advisory	FFC	Baldwin, Banks, Barrow, Bartow, Butts, Carroll and 56 more	13 hr
Apr 12, 6:03 AM EDT	Red Flag Warning	FFC	Baldwin, Bibb, Bleckley, Chattahoochee, Crawford, Crisp and 38 more	14 hr

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.