Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 601, NWS Atlanta, GA

August 14, 1999Wheeler County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 14, 1999, 4:47 PM EDT for Wheeler County, Georgia. It was in force for 18 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 14, 1999, 4:47 PM EDT (20:47 UTC)
Expired
Aug 14, 1999, 5:05 PM EDT
In force
18 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Wheeler County, GA

The radar

The Robins AFB radar (KJGX), 85 km from the middle of the area, began a volume at 20:48 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

Jacksonville, FL (KJAX), launched 12:00Z, 8.8 hours before the alert went out and 204 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-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 1999-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1234 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 1999-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1234 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1144 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
61 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.

000 
TTAA00 KATL 142046
SVRATL
GAC309-142105-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
447 PM EDT SAT AUG 14 1999

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WHEELER COUNTY IN CENTRAL GEORGIA

* UNTIL 505 PM EDT

* AT 446 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR  11 MILES SOUTHEAST OF ALAMO OR 2 MILES EAST OF JORDAN...
  MOVING SOUTHEAST AT 5 MPH.

* THIS STORM WILL REMAIN OVER RURAL AREAS.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. IF
YOU SEE DAMAGE OR LARGE HAIL...CALL THE NATIONAL WEATHER SERVICE
AT 770-486-1133 AT EXTENSION 2 0 4.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 9:31 PM EDTSevere Thunderstorm WarningFFCFannin, Union34 min
Aug 14, 12:25 AM EDTSevere Thunderstorm WarningFFCGilmer, Pickens35 min
Aug 14, 3:37 PM EDTSevere Thunderstorm WarningFFCEmanuel, Treutlen33 min
Aug 14, 4:06 PM EDTSevere Thunderstorm WarningFFCMontgomery34 min
Aug 14, 4:22 PM EDTSevere Thunderstorm WarningFFCToombs33 min
Aug 14, 4:50 PM EDTSevere Thunderstorm WarningFFCMontgomery20 min
Aug 14, 5:43 PM EDTSevere Thunderstorm WarningFFCDodge32 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.