Alert archive / Georgia / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 80, NWS Atlanta, GA

May 9, 2002Hall County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 9, 2002, 5:46 PM EDT for Hall County, Georgia. It was in force for 14 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 9, 2002, 5:46 PM EDT (21:46 UTC)
Expired: May 9, 2002, 6:00 PM EDT
In force: 14 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Hall County, GA

The radar

The Atlanta radar (KFFC), 121 km from the middle of the area, began a volume at 21:50 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
May 9, 5:47 PM EDT	Thunderstorm Wind	Gainesville, GA	The Hall county 911 center reported several trees down.

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, 9.8 hours before the alert went out and 117 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: 45 J/kg
Mixed-layer CIN: -315 J/kg
Mixed-layer LCL: 929 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS52 KFFC 092146
SVRATL
GAC139-092200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
546 PM EDT THU MAY 9 2002

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HALL COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 600 PM EDT

* AT 545 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER GAINESVILLE...MOVING EAST AT 35 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...FLOWERY
BRANCH...GAINESVILLE...GAINESVILLE MILLS...GILLSVILLE...OAKWOOD AND
WESTSIDE.

HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN
THE WARNED AREA.

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 3437 8395 3416 8395 3414 8381 3432 8361

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 5:18 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee, Cobb, Fulton	27 min
May 9, 5:36 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Hall	24 min
May 9, 5:51 PM EDT	Severe Thunderstorm Warning	FFC	Gwinnett	24 min
May 9, 6:09 PM EDT	Severe Thunderstorm Warning	FFC	Banks	21 min
May 9, 6:51 PM EDT	Severe Thunderstorm Warning	FFC	Carroll	24 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2002 Every severe thunderstorm warning in 2002

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.