Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 101, NWS Atlanta, GA

May 11, 2007Henry County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 11, 2007, 7:43 PM EDT for Henry County, Georgia. It was in force for 23 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
May 11, 2007, 7:43 PM EDT (23:43 UTC)
Expired
May 11, 2007, 8:06 PM EDT
In force
23 min
Issued by
NWS Atlanta, GA
Area
Counties, with a storm outline in the text

County Henry County, GA

The radar

The Atlanta radar (KFFC), 32 km from the middle of the area, began a volume at 23:43 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

TimeReportWhereRemark
May 11, 7:50 PM EDTTSTM WND DMG1 Sw Stockbridge, GATREES DOWN BLOCKING TWO LANES OF I-75. 3 ADDITIONAL REPORTS OF TREES DOWN FROM THE SAME GENERAL AREA NEAR WOODHAVEN DRIVE.

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, 11.7 hours before the alert went out and 26 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2007-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2007-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1410 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
-6 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 112344
SVRFFC
GAC151-120030-
/O.NEW.KFFC.SV.W.0101.070511T2343Z-070512T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
743 PM EDT FRI MAY 11 2007

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN HENRY COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 830 PM EDT

* AT 738 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZED HAIL.  THIS
  STORM WAS LOCATED NEAR STOCKBRIDGE...MOVING SOUTH AT 5 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  FLIPPEN AND HAMPTON.

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 3333 8415 3335 8425 3335 8434 3343 8434
      3344 8427 3354 8427 3355 8425 3357 8425
      3357 8414 3331 8412

$$
2 follow-up statements
000 
WWUS52 KFFC 112355
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
753 PM EDT FRI MAY 11 2007

GAC151-120030-
/O.CON.KFFC.SV.W.0101.000000T0000Z-070512T0030Z/
HENRY GA-
753 PM EDT FRI MAY 11 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR WESTERN HENRY COUNTY...

AT 751 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM JUST EAST OF THE CLAYTON...HENRY 
COUNTY
LINE...NEAR STOCKBRIDGE...MOVING SOUTH AT 5 MPH. THE STORM WILL 
AFFECT AREAS BETWEEN STOCKBRIDGE AND HAMPTON.

COUNTY OFFICIALS IN HENRY COUNTY HAVE REPORTED THAT TREES ARE DOWN
ON INTERSTATE 75 NEAR STOCKBRIDGE.  IN ADDITION TO DAMAGING WINDS...
PENNY-SIZED HAIL IS LIKELY WITH THIS THUNDERSTORM.

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 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 3333 8415 3335 8425 3335 8434 3343 8434
      3344 8427 3354 8427 3355 8425 3357 8425
      3357 8414 3331 8412

$$
000 
WWUS52 KFFC 120006
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
805 PM EDT FRI MAY 11 2007

GAC151-120015-
/O.CAN.KFFC.SV.W.0101.000000T0000Z-070512T0030Z/
HENRY GA-
805 PM EDT FRI MAY 11 2007

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN HENRY COUNTY IS
CANCELLED...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND 
REDEVELOPED
IN CLAYTON COUNTY. SEVERE THUNDERSTORMS ARE NO LONGER DETECTED IN 
HENRY COUNTY. HOWEVER...THUNDERSTORMS WITH FREQUENT LIGHTNING AND
HEAVY RAIN CONTINUE IN THE STOCKBRIDGE AREA OF WESTERN HENRY COUNTY. 
IN ADDITION...WIND GUSTS TO 35 MPH AND SMALL HAIL ARE STILL POSSIBLE 
WITH THESE STORMS.

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 3333 8415 3335 8425 3335 8434 3343 8434
      3344 8427 3354 8427 3355 8425 3357 8425
      3357 8414 3331 8412

$$


19

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 5:29 PM EDTSevere Thunderstorm WarningFFCPolk46 min
May 11, 6:06 PM EDTSevere Thunderstorm WarningFFCBartow39 min
May 11, 6:34 PM EDTSevere Thunderstorm WarningFFCCobb41 min
May 11, 7:02 PM EDTSevere Thunderstorm WarningFFCFulton43 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2007Every 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.