Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 560, NWS Atlanta, GA

July 29, 1999Bartow County, Cobb County, Paulding County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 29, 1999, 5:41 PM EDT for Bartow County, Cobb County, Paulding County, Georgia. It was in force for 49 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 29, 1999, 5:41 PM EDT (21:41 UTC)
Expired
Jul 29, 1999, 6:30 PM EDT
In force
49 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Bartow County, GA, Cobb County, GA, Paulding County, GA

What was reported inside it

TimeReportWhereRemark
Jul 29, 6:05 PM EDTThunderstorm WindMarietta, GAThe public reported trees down. Large limbs were knocked onto a deck.
Jul 29, 6:30 PM EDTThunderstorm WindDallas, GAPaulding county 911 reported trees down. One fell on a car.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.7 hours before the alert went out and 78 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 1999-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 192 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°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 1999-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
192 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
1285 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
60 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 
TTAA00 KATL 292143 RRA
SVRATL
GAC015-067-223-292230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
541 PM EDT THU JUL 29 1999

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BARTOW COUNTY IN NORTHWESTERN GEORGIA
  COBB COUNTY IN NORTHWESTERN GEORGIA
  PAULDING COUNTY IN NORTHWESTERN GEORGIA

* UNTIL 630 PM EDT

* AT 540 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR  7 MILES NORTHWEST OF KENNESAW... MOVING SOUTH AT 15 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE...
   KENNESAW                    AROUND 550 PM ...
   NEW HOPE                    AROUND 605 PM ...
   MARIETTA                    AROUND 610 PM ...
   DALLAS                      AROUND 615 PM ...
   HIRAM                       AROUND 625 PM EDT...

DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND DEADLY LIGHTNING
ARE ALL POSSIBLE IN SEVERE THUNPDERSTORMS. IF YOU SEE DAMAGE OR
LARGE HAIL...CALL THE NATIONAL WEATHER SERVICE AT 770-486-1133 AT
EXTENSION 2 0 4.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 4:30 PM EDTSevere Thunderstorm WarningFFCCarroll, Coweta35 min
Jul 29, 4:32 PM EDTSevere Thunderstorm WarningFFCCherokee33 min
Jul 29, 4:41 PM EDTSevere Thunderstorm WarningFFCSchley34 min
Jul 29, 6:52 PM EDTSevere Thunderstorm WarningFFCHaralson33 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1999Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.