Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 280, NWS Atlanta, GA

July 19, 2007Spalding County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 19, 2007, 2:13 PM EDT for Spalding County, Georgia. It was in force for 23 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 19, 2007, 2:13 PM EDT (18:13 UTC)
Expired: Jul 19, 2007, 2:36 PM EDT
In force: 23 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Spalding County, GA

The radar

The Atlanta radar (KFFC), 28 km from the middle of the area, began a volume at 18:15 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, 6.2 hours before the alert went out and 22 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: 932 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 902 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 19 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 191814
SVRFFC
GAC255-191845-
/O.NEW.KFFC.SV.W.0280.070719T1813Z-070719T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
213 PM EDT THU JUL 19 2007

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN SPALDING COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 245 PM EDT

* AT 210 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 RIO...MOVING EAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  EXPERIMENT AND TOWALAGA.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...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 3336 8437 3327 8441 3322 8413 3333 8409

$$

1 follow-up statement

000 
WWUS52 KFFC 191836
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
233 PM EDT THU JUL 19 2007

GAC255-191843-
/O.CAN.KFFC.SV.W.0280.000000T0000Z-070719T1845Z/
SPALDING GA-
233 PM EDT THU JUL 19 2007

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SPALDING COUNTY IS
CANCELLED...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...HOWEVER THE 
STORM REMAINS STRONG AND CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH 
AND VERY HEAVY RAIN. THE STORM WAS LOCATED OVER NORTH CENTRAL 
SPALDING COUNTY AND MOVING EAST AT 15 MPH. THE STORM WILL MOVE 
ACROSS EASTERN SPALDING COUNTY THROUGH 300 PM EDT. 

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 3336 8437 3327 8441 3322 8413 3333 8409

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 3:15 PM EDT	Severe Thunderstorm Warning	FFC	Jones	16 min
Jul 19, 4:49 PM EDT	Severe Thunderstorm Warning	FFC	Dooly, Pulaski	56 min
Jul 19, 5:48 PM EDT	Severe Thunderstorm Warning	FFC	Wilcox	30 min
Jul 19, 5:57 PM EDT	Severe Thunderstorm Warning	FFC	Crisp	33 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.