Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 96, NWS Atlanta, GA

April 28, 1999Houston County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 28, 1999, 6:51 PM EDT for Houston County, Georgia. It was in force for 34 min. 1 report 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: Apr 28, 1999, 6:51 PM EDT (22:51 UTC)
Expired: Apr 28, 1999, 7:25 PM EDT
In force: 34 min
Issued by: NWS Atlanta, GA
Area: Whole counties

County Houston County, GA

The radar

The Robins AFB radar (KJGX), 38 km from the middle of the area, began a volume at 22:52 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

Time	Report	Where	Remark
Apr 28, 7:00 PM EDT	Hail 1.75	Centerville, GA	The public reported from dime to golf ball size hail lasting up to 10 minutes..

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, 10.9 hours before the alert went out and 128 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: 20 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1199 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 50 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 282251 RRA
SVRATL
GAC153-282325-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
651 PM EDT WED APR 28 1999

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HOUSTON COUNTY IN CENTRAL GEORGIA

* UNTIL 725 PM EDT

* AT 651 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR  6 MILES NORTH OF HAYNEVILLE... MOVING SOUTHEAST AT 15 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE...
   HAYNEVILLE                  AROUND 705 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...CA|LL 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.

Issued	Product	Office	Counties	Lasted
Apr 28, 3:09 PM EDT	Severe Thunderstorm Warning	FFC	Spalding	51 min
Apr 28, 3:52 PM EDT	Severe Thunderstorm Warning	FFC	Upson	48 min
Apr 28, 4:51 PM EDT	Severe Thunderstorm Warning	FFC	Monroe	49 min
Apr 28, 4:54 PM EDT	Severe Thunderstorm Warning	FFC	Crawford	51 min
Apr 28, 5:02 PM EDT	Severe Thunderstorm Warning	FFC	Taylor	48 min
Apr 28, 5:46 PM EDT	Severe Thunderstorm Warning	FFC	Crawford	34 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.