Alert archive / Georgia / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 369, NWS Atlanta, GA

July 21, 2003Jackson County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 21, 2003, 6:40 PM EDT for Jackson County, Georgia. It was in force for 35 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: Jul 21, 2003, 6:40 PM EDT (22:40 UTC)
Expired: Jul 21, 2003, 7:15 PM EDT
In force: 35 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Jackson County, GA

The radar

The Atlanta radar (KFFC), 129 km from the middle of the area, began a volume at 22:39 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, 10.7 hours before the alert went out and 124 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: 1499 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 919 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 25 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.

835 
WUUS52 KFFC 212240
SVRATL
GAC157-212315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
640 PM EDT MON JUL 21 2003

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN JACKSON COUNTY IN NORTHEAST GEORGIA

* UNTIL 715 PM EDT

* AT 634 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES WEST OF JEFFERSON...MOVING EAST AT 25
  MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...COMMERCE...
JEFFERSON AND MAYSVILLE.

HAIL TO THE SIZE OF DIMES 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.

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 3423 8369 3411 8368 3412 8336 3426 8351

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 5:52 PM EDT	Severe Thunderstorm Warning	FFC	Dade	23 min
Jul 21, 5:57 PM EDT	Severe Thunderstorm Warning	FFC	Dade	18 min
Jul 21, 5:57 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Hall	48 min
Jul 21, 6:19 PM EDT	Severe Thunderstorm Warning	FFC	Dade, Walker	26 min
Jul 21, 7:09 PM EDT	Severe Thunderstorm Warning	FFC	Banks	21 min
Jul 21, 7:24 PM EDT	Severe Thunderstorm Warning	FFC	Wilkes	36 min
Jul 21, 7:43 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	32 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2003 Every severe thunderstorm warning in 2003

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.