Alert archive / Georgia / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 39, NWS Atlanta, GA

May 22, 2004Gwinnett County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 22, 2004, 2:09 PM EDT for Gwinnett County, Georgia. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 22, 2004, 2:09 PM EDT (18:09 UTC)
Expired: May 22, 2004, 3:00 PM EDT
In force: 51 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Gwinnett County, GA

The radar

The Atlanta radar (KFFC), 77 km from the middle of the area, began a volume at 18:13 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 12:00Z, 6.2 hours before the alert went out and 74 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: 700 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 1135 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 37 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.

924 
WUUS52 KFFC 221809
SVRATL
GAC135-221900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
209 PM EDT SAT MAY 22 2004

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GWINNETT COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 300 PM EDT

* AT 201 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER NORCROSS...MOVING NORTHEAST AT 5 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BERKELEY     
  LAKE...DULUTH...LAWRENCEVILLE...LILBURN...NORCROSS...SUGAR HILL    
  AND SUWANEE.

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

THIS STORM CONTAINS VERY HEAVY RAIN. EXPECT 1 TO 2 INCHES OF RAIN IN
LESS THAN AN HOUR. THIS CAN CAUSE BRIEF FLOODING OF ROADS.

EXCESSIVE LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IF
POSSIBLE. STAY AWAY FROM WINDOWS AND DOORS. AVOID USING TELEPHONES OR
ELECTRICAL APPLIANCES.

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 3397 8437 3382 8425 3396 8390 3418 8407

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 2:24 PM EDT	Severe Thunderstorm Warning	FFC	DeKalb	36 min
May 22, 3:02 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee	28 min
May 22, 3:47 PM EDT	Severe Thunderstorm Warning	FFC	Gordon, Pickens	28 min
May 22, 3:57 PM EDT	Severe Thunderstorm Warning	FFC	Dawson	33 min
May 22, 4:54 PM EDT	Severe Thunderstorm Warning	FFC	Union	36 min
May 22, 4:58 PM EDT	Severe Thunderstorm Warning	FFC	Towns	47 min
May 22, 5:25 PM EDT	Severe Thunderstorm Warning	FFC	Murray	35 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2004 Every severe thunderstorm warning in 2004

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.