Alert archive / Georgia / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 307, NWS Atlanta, GA

July 31, 2002Floyd County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 31, 2002, 2:37 PM EDT for Floyd 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: Jul 31, 2002, 2:37 PM EDT (18:37 UTC)
Expired: Jul 31, 2002, 3:00 PM EDT
In force: 23 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Floyd County, GA

The radar

The Northeast Alabama radar (KHTX), 103 km from the middle of the area, began a volume at 18:40 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
Jul 31, 2:39 PM EDT	Hail 0.75	Armuchee, GA	The public reported dime size hail.

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, 6.6 hours before the alert went out and 126 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: 353 J/kg
Mixed-layer CIN: -143 J/kg
Mixed-layer LCL: 927 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 12 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.

459 
WUUS52 KFFC 311837
SVRATL
GAC115-311900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
236 PM EDT WED JUL 31 2002

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FLOYD COUNTY IN NORTHWEST GEORGIA

* UNTIL 300 PM EDT

* AT 232 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES NORTHWEST OF SHANNON...MOVING SOUTHEAST
  AT 20 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...LINDALE...
ROME AND SHANNON.

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 8535 3411 8528 3420 8503 3449 8515
          3441 8525

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 9:14 PM EDT	Severe Thunderstorm Warning	FFC	Floyd	31 min
Jul 31, 5:09 PM EDT	Severe Thunderstorm Warning	FFC	DeKalb	26 min
Jul 31, 5:25 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	35 min
Jul 31, 5:36 PM EDT	Severe Thunderstorm Warning	FFC	Newton	29 min
Jul 31, 5:57 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	33 min
Jul 31, 6:34 PM EDT	Severe Thunderstorm Warning	FFC	Greene	26 min
Jul 31, 6:37 PM EDT	Severe Thunderstorm Warning	FFC	Greene	23 min
Jul 31, 6:54 PM EDT	Severe Thunderstorm Warning	FFC	Montgomery	36 min
Jul 31, 7:01 PM EDT	Severe Thunderstorm Warning	FFC	Greene	29 min
Jul 31, 7:13 PM EDT	Severe Thunderstorm Warning	FFC	Jefferson	32 min
Jul 31, 7:19 PM EDT	Severe Thunderstorm Warning	FFC	Hancock	26 min
Jul 31, 7:38 PM EDT	Severe Thunderstorm Warning	FFC	Johnson	32 min
Jul 31, 7:43 PM EDT	Severe Thunderstorm Warning	FFC	Monroe	22 min
Jul 31, 7:55 PM EDT	Severe Thunderstorm Warning	FFC	Bibb, Crawford	35 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.