Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 59, NWS Atlanta, GA

April 7, 1999Coweta County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 7, 1999, 8:24 PM EDT for Coweta County, Georgia. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 7, 1999, 8:24 PM EDT (00:24 UTC)
Expired: Apr 7, 1999, 8:55 PM EDT
In force: 31 min
Issued by: NWS Atlanta, GA
Area: Whole counties

County Coweta County, GA

The radar

The Atlanta radar (KFFC), 18 km from the middle of the area, began a volume at 00:23 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 00:00Z, 0.4 hours before the alert went out and 24 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: 122 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 1937 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 104 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.

999 
WUUS1 KATL 080025 RRA
SVRATL
GAC077-080055-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
824 PM EDT WED APR 7 1999

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COWETA COUNTY IN NORTHWESTERN GEORGIA

* UNTIL 855 PM EDT

* AT 821 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR  6 MILES WEST OF GRANTVILLE... MOVING EAST AT 35 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE...
   GRANTVILLE                  AROUND 830 PM EDT
   STEPHENS CROSSROAD          AROUND 830 PM EDT
   NEWNAN                      AROUND 835 PM EDT
   MORELAND                    AROUND 835 PM EDT
   SHARPSBURG                  AROUND 850 PM EDT

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

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Apr 7, 6:07 PM EDT, 2 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
607 PM EDT WED APR 7 1999

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

507-529    WARNER ROBINS             GA   NUMEROUS REPORTS OF HAIL
PM         HOUSTON                        STONES FROM 0.75 INCH TO 2.0
04/07/99                                  INCH DIAMETER

512 PM     MACON                     GA   0.75 INCH HAIL
04/07/99   BIBB

Nearby

Severe Thunderstorm Warnings in Georgia, 1999 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.