Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 290, NWS Atlanta, GA

June 4, 1999Clayton County, Fayette County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 4, 1999, 4:04 PM EDT for Clayton County, Fayette County, Georgia. It was in force for 36 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
Jun 4, 1999, 4:04 PM EDT (20:04 UTC)
Expired
Jun 4, 1999, 4:40 PM EDT
In force
36 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Clayton County, GA, Fayette County, GA

The radar

The Atlanta radar (KFFC), 18 km from the middle of the area, began a volume at 20:05 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 4, 1:45 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.1 hours before the alert went out and 14 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, Peachtre/Fal Fld, GA at 12:00Z on 1999-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 495 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, Peachtre/Fal Fld, GA at 12:00Z on 1999-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
495 J/kg
Mixed-layer CIN
-107 J/kg
Mixed-layer LCL
1103 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KATL 042005
SVRATL
GAC063-113-042040-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
404 PM EDT FRI JUN 4 1999

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CLAYTON COUNTY IN NORTHWESTERN GEORGIA
  EASTERN FAYETTE COUNTY IN NORTHWESTERN GEORGIA

* UNTIL 440 PM EDT

* AT 402 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR  1 MILE NORTH OF INMAN... MOVING SOUTH AT 10 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE...
   INMAN                       AROUND 410 PM...
   WOOLSEY                     AROUND 420 PM...
   STARRS MILL                 AROUND 440 PM...

BOATERS...GOLFERS AND OTHERS INVOLVED IN OUTSIDE ACTIVITIES SHOULD
SEEK SHELTER IMMEDIATELY. IF CAUGHT IN THE OPEN...FIND A LOW SPOT
AWAY FROM TREES...FENCES AND POLES. IF YOU SEE DAMAGE OR LARGE
HAIL CALL THE NATIONAL WEATHER SERVICE AT 770-486-1133 AT
EXTENSION 2 0 4.

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 4, 12:20 PM EDT, 3 hours 44 minutes before
GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
091>098-103>113-041715-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1220 PM EDT FRI JUN 4 1999

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON OVER MOST OF
NORTH AND CENTRAL GEORGIA.

THE AREA HAVING THE GREATEST THREAT WILL BE SOUTHEAST OF A LINE FROM
ELBERTON TO MONROE TO AMERICUS...BUT SEVERE STORMS CANNOT BE RULED OUT
ANYWHERE IN THE STATE TODAY.

A MOIST AND UNSTABLE AIRMASS REMAINS IN PLACE OVER THE SOUTHEASTERN
STATES. AFTERNOON TEMPERATURES IN THE 80S TO LOWER 90S AND A SLOW
MOVING FRONTAL SYSTEM WILL COMBINE TO TRIGGER SCATTERED SHOWERS AND
THUNDERSTORMS.

SOME STORMS MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS ABOVE
50 MPH BEING THE PRIMARY THREAT.
SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD MONITOR WEATHER
CONDITIONS THIS AFTERNOON IN CASE ACTIVATION BECOMES NECESSARY.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 12:53 PM EDTSevere Thunderstorm WarningFFCChattooga, Floyd32 min
Jun 4, 1:24 PM EDTSevere Thunderstorm WarningFFCFloyd31 min
Jun 4, 1:43 PM EDTSevere Thunderstorm WarningFFCChattooga17 min
Jun 4, 1:45 PM EDTSevere Thunderstorm WarningFFCCatoosa, Walker50 min
Jun 4, 1:48 PM EDTSevere Thunderstorm WarningFFCPolk47 min
Jun 4, 1:49 PM EDTSevere Thunderstorm WarningFFCFloyd36 min
Jun 4, 2:26 PM EDTSevere Thunderstorm WarningFFCFloyd19 min
Jun 4, 2:30 PM EDTSevere Thunderstorm WarningFFCWalker35 min
Jun 4, 2:35 PM EDTSevere Thunderstorm WarningFFCPolk35 min
Jun 4, 3:08 PM EDTSevere Thunderstorm WarningFFCDade, Walker47 min
Jun 4, 3:08 PM EDTSevere Thunderstorm WarningFFCChattooga47 min
Jun 4, 3:09 PM EDTSevere Thunderstorm WarningFFCFloyd36 min
Jun 4, 3:19 PM EDTFlash Flood WarningFFCFloyd2 hr
Jun 4, 3:21 PM EDTSevere Thunderstorm WarningFFCHaralson, Polk34 min
Jun 4, 3:25 PM EDTTornado WarningFFCHaralson20 min
Jun 4, 3:36 PM EDTSevere Thunderstorm WarningFFCCarroll34 min
Jun 4, 3:55 PM EDTSevere Thunderstorm WarningFFCChattooga20 min
Jun 4, 4:01 PM EDTSevere Thunderstorm WarningFFCFloyd19 min
Jun 4, 4:13 PM EDTSevere Thunderstorm WarningFFCHenry, Spalding32 min
Jun 4, 4:16 PM EDTSevere Thunderstorm WarningFFCMadison34 min
Jun 4, 4:18 PM EDTSevere Thunderstorm WarningFFCDade37 min
Jun 4, 4:49 PM EDTSevere Thunderstorm WarningFFCOglethorpe36 min
Jun 4, 4:55 PM EDTSevere Thunderstorm WarningFFCWalker35 min
Jun 4, 5:03 PM EDTSevere Thunderstorm WarningFFCCatoosa32 min
Jun 4, 5:05 PM EDTSevere Thunderstorm WarningFFCDade35 min
Jun 4, 5:23 PM EDTSevere Thunderstorm WarningFFCOglethorpe32 min
Jun 4, 5:28 PM EDTSevere Thunderstorm WarningFFCWalker37 min
Jun 4, 5:30 PM EDTSevere Thunderstorm WarningFFCDade35 min
Jun 4, 5:38 PM EDTSevere Thunderstorm WarningFFCGreene32 min
Jun 4, 5:40 PM EDTSevere Thunderstorm WarningFFCClarke, Oconee35 min
Jun 4, 5:47 PM EDTSevere Thunderstorm WarningFFCMeriwether, Upson33 min
Jun 4, 5:48 PM EDTSevere Thunderstorm WarningFFCTalbot37 min
Jun 4, 6:07 PM EDTSevere Thunderstorm WarningFFCGreene48 min
Jun 4, 6:13 PM EDTSevere Thunderstorm WarningFFCGreene, Oconee32 min
Jun 4, 6:20 PM EDTSevere Thunderstorm WarningFFCTalbot35 min
Jun 4, 6:23 PM EDTSevere Thunderstorm WarningFFCMorgan37 min
Jun 4, 6:26 PM EDTSevere Thunderstorm WarningFFCGreene, Hancock, Putnam49 min
Jun 4, 6:28 PM EDTSevere Thunderstorm WarningFFCJasper, Newton32 min
Jun 4, 6:31 PM EDTSevere Thunderstorm WarningFFCMarion, Taylor49 min
Jun 4, 6:52 PM EDTSevere Thunderstorm WarningFFCBaldwin33 min
Jun 4, 7:06 PM EDTSevere Thunderstorm WarningFFCBleckley, Twiggs34 min
Jun 4, 7:15 PM EDTSevere Thunderstorm WarningFFCDooly35 min
Jun 4, 7:16 PM EDTSevere Thunderstorm WarningFFCPutnam34 min
Jun 4, 7:19 PM EDTSevere Thunderstorm WarningFFCWilkinson51 min
Jun 4, 7:23 PM EDTSevere Thunderstorm WarningFFCSumter37 min
Jun 4, 7:27 PM EDTSevere Thunderstorm WarningFFCBaldwin33 min
Jun 4, 7:40 PM EDTSevere Thunderstorm WarningFFCWebster35 min
Jun 4, 7:43 PM EDTTornado WarningFFCWilkinson17 min
Jun 4, 7:56 PM EDTSevere Thunderstorm WarningFFCCrisp34 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.