Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 242, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Jun 2, 1999, 6:03 PM EDT for DeKalb County, Georgia. It was in force for 47 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
- Jun 2, 1999, 6:03 PM EDT (22:03 UTC)
- Expired
- Jun 2, 1999, 6:50 PM EDT
- In force
- 47 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County DeKalb County, GA
The radar
The Atlanta radar (KFFC), 55 km from the middle of the area, began a volume at 22:07 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 |
|---|---|---|---|
| Jun 2, 6:15 PM EDT | Thunderstorm Wind | Decatur, GA | North Georgia Power company reported at least 3 trees were 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 2, 3:00 PM EDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.1 hours before the alert went out and 51 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.
- Mixed-layer CAPE
- 72 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 1016 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 2, 12:55 PM EDT, 5 hours 8 minutes before
GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 091>098-103>113-022000- NORTH AND CENTRAL GEORGIA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1255 PM EDT WED JUN 2 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING ACROSS NORTH AND CENTRAL GEORGIA. SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS NORTH AND CENTRAL GEORGIA THIS AFTERNOON...AND CONTINUE INTO THE EVENING. A MOIST AND UNSTABLE AIRMASS OVER THE REGION ALONG WITH DAYTIME HEATING...AND WEAK UPPER LEVEL DISTURBANCES WILL PRODUCE SCATTERED THUNDERSTORMS. A FEW STORMS MAY PRODUCE LARGE AND DAMAGING WINDS THROUGH THE EVENING HOURS...MAINLY NORTH OF A LINE FROM COLUMBUS TO MACON AND AUGUSTA. STORM SPOTTERS AND EMERGENCY MANAGEMENT OFFICIALS SHOULD REMAIN ALERT FOR POSSIBLE ACTIVATION THIS AFTERNOON AND EVENING.
Special weather statement, Jun 2, 12:55 PM EDT, 5 hours 8 minutes before
GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 091>098-103>113-022000- NORTH AND CENTRAL GEORGIA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1255 PM EDT WED JUN 2 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING ACROSS NORTH AND CENTRAL GEORGIA. SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS NORTH AND CENTRAL GEORGIA THIS AFTERNOON...AND CONTINUE INTO THE EVENING. A MOIST AND UNSTABLE AIRMASS OVER THE REGION ALONG WITH DAYTIME HEATING...AND WEAK UPPER LEVEL DISTURBANCES WILL PRODUCE SCATTERED THUNDERSTORMS. A FEW STORMS MAY PRODUCE LARGE AND DAMAGING WINDS THROUGH THE EVENING HOURS...MAINLY NORTH OF A LINE FROM COLUMBUS TO MACON AND AUGUSTA. STORM SPOTTERS AND EMERGENCY MANAGEMENT OFFICIALS SHOULD REMAIN ALERT FOR POSSIBLE ACTIVATION THIS AFTERNOON AND EVENING.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 3:26 PM EDT | Severe Thunderstorm Warning | FFC | Floyd | 34 min |
| Jun 2, 4:25 PM EDT | Severe Thunderstorm Warning | FFC | Gordon | 50 min |
| Jun 2, 6:01 PM EDT | Severe Thunderstorm Warning | FFC | Cherokee, Forsyth, Fulton | 49 min |
| Jun 2, 6:19 PM EDT | Severe Thunderstorm Warning | FFC | Clayton, Fayette | 46 min |
| Jun 2, 7:03 PM EDT | Severe Thunderstorm Warning | FFC | Coweta, Fayette | 32 min |
| Jun 2, 7:05 PM EDT | Severe Thunderstorm Warning | FFC | Barrow, Gwinnett, Walton | 35 min |
| Jun 2, 7:17 PM EDT | Severe Thunderstorm Warning | FFC | White | 33 min |
| Jun 2, 7:21 PM EDT | Severe Thunderstorm Warning | FFC | Spalding | 49 min |
| Jun 2, 7:28 PM EDT | Severe Thunderstorm Warning | FFC | Walton | 32 min |
| Jun 2, 7:35 PM EDT | Severe Thunderstorm Warning | FFC | Newton | 35 min |
| Jun 2, 7:41 PM EDT | Severe Thunderstorm Warning | FFC | Butts | 49 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 1999Every 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.