Alert archive / Georgia / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 3, NWS Atlanta, GA

January 7, 1998Polk County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jan 7, 1998, 3:28 PM EST for Polk County, Georgia. It was in force for 32 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
Jan 7, 1998, 3:28 PM EST (20:28 UTC)
Expired
Jan 7, 1998, 4:00 PM EST
In force
32 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Polk County, GA

The radar

The Atlanta radar (KFFC), 91 km from the middle of the area, began a volume at 20:32 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, 8.5 hours before the alert went out and 95 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 1998-01-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 198 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 1998-01-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 211 square meters per square second.19395878Sfc1 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
198 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
536 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
211 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KATL 072028
SVRATL
GAC233-072100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
328 PM EST WED JAN 7 1998

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR
  POLK COUNTY - NORTHWESTERN GEORGIA

* UNTIL 400 PM EST

* AT 326 PM EST...  13 MILES SOUTHWEST OF SENEY... A SEVERE
  THUNDERSTORM WAS INDICATED BY DOPPLER RADAR... MOVING NORTH 55
  MPH.

DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY
LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE
AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. BOATERS...GOLFERS...
AND OTHERS INVOLVED IN OUTSIDE ACTIVITIES SHOULD SEEK SHELTER
IMMEDIATELY. IF YOU EXPERIENCE STORM DAMAGE TO STRUCTURES OR
TREES...OR HAIL THE SIZE OF DIMES OR LARGER...PLEASE REPORT IT TO
THE NATIONAL WEATHER SERVICE BY CALLING 770-486-8535.

MSS/TM

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 7, 3:17 PM ESTSevere Thunderstorm WarningFFCCarroll33 min
Jan 7, 3:24 PM ESTSevere Thunderstorm WarningFFCChattooga, Floyd31 min
Jan 7, 4:58 PM ESTSevere Thunderstorm WarningFFCCrawford32 min
Jan 7, 5:15 PM ESTSevere Thunderstorm WarningFFCMonroe30 min
Jan 7, 5:36 PM ESTSevere Thunderstorm WarningFFCJasper, Jones34 min
Jan 7, 5:52 PM ESTSevere Thunderstorm WarningFFCBibb33 min
Jan 7, 6:10 PM ESTSevere Thunderstorm WarningFFCMorgan, Putnam30 min
Jan 7, 6:15 PM ESTSevere Thunderstorm WarningFFCJones30 min
Jan 7, 6:53 PM ESTSevere Thunderstorm WarningFFCJones27 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1998Every severe thunderstorm warning in 1998

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.