Alert archive / Georgia / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 341, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 30, 1990, 10:28 PM EDT for Clayton County, Henry County, Georgia. It was in force for 47 min. 2 reports 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
- Aug 30, 1990, 10:28 PM EDT (02:28 UTC)
- Expired
- Aug 30, 1990, 11:15 PM EDT
- In force
- 47 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
Counties Clayton County, GA, Henry County, GA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 30, 10:30 PM EDT | Hail 0.75 | Clayton, GA | |
| Aug 30, 10:45 PM EDT | Hail 0.75 | Henry, GA |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Athens Municipal, GA (KAHN), launched 00:00Z, 2.5 hours before the alert went out and 102 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
- 1066 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 1079 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KATL 310230 SVRATL GAC063-151-310315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ATLANTA GA 1028 PM EDT THU AUG 30 1990 THE NATIONAL WEATHER SERVICE IN ATLANTA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1115 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHWEST GEORGIA ...CLAYTON COUNTY...HENRY COUNTY RADAR SHOWED A SEVERE THUNDERSTORM JUST EAST OF JONESBORO AT 1025 PM EDT MOVING EAST AT 10 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY >RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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
Local storm report, Aug 30, 6:40 PM EDT, 3 hours 48 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE ATHENS GA 640 PM EDT THU AUG 30 1990 COUNTY........ JACKSON SOURCE........ JACKSON COUNTY SHERIFF DEPARTMENT TIME.......... 545 PM EDT (2145Z) LOCATION...... SOUTH OF JEFFERSON TYPE STORM.... SEVERE THUNDERSTORM HAIL.......... PEA SIZE HAIL DAMAGE........ NUMEROUS TREES BLOWN DOWN INJURIES...... NONE KNOWN
Special weather statement, Aug 30, 7:08 PM EDT, 3 hours 20 minutes before
GAZ002-004-310100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATHENS GA 707 PM EDT THU AUG 30 1990 ...THUNDERSTORMS WITH VERY HEAVY RAIN OVER NORTHEAST GEORGIA... AT 700 PM EDT A THUNDERSTORM WITH VERY HEAVY RAINFALL WAS INDICATED OVER SOUTHERN JACKSON COUNTY.A. THIS THUNDERSTORM WAS MOVING SOUTHEAST AT 25 MILES AN HOUR AND WILL BE ENTERING CLARKE COUNTY WITHIN THE NEXT HOUR. PERSONS IN CLARKE...MADISON...OGLETHORPE AND OCONEE COUNTIES OF NORTHEAST GEORGIA SHOULD REMAIN ALERT FOR BRIEF HEAVY RAINFALL... FREQUENT CLOUDY TO GROUND LIGHTNING...POSSIBLE SMALL...STRONG GUSTY WINDS AND FLOODING OF LOW LYING AREAS AND ROADWAYS FOR THE NEXT TWO HOURS.
Special weather statement, Aug 30, 7:12 PM EDT, 3 hours 16 minutes before
GAZ002-004-310100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATHENS GA 707 PM EDT THU AUG 30 1990 ...THUNDERSTORMS WITH VERY HEAVY RAIN OVER NORTHEAST GEORGIA... AT 700 PM EDT A THUNDERSTORM WITH VERY HEAVY RAINFALL WAS INDICATED OVER SOUTHERN JACKSON COUNTY. THIS THUNDERSTORM WAS MOVING SOUTHEAST AT 25 MILES AN HOUR AND WILL BE ENTERING CLARKE COUNTY WITHIN THE NEXT HOUR. PERSONS IN CLARKE...MADISON...OGLETHORPE AND OCONEE COUNT"IES OF NORTHEAST GEORGIA SHOULD REMAIN ALERT FOR BRIEF HEAVY RAINFALL... FREQUENT CLOUDY TO GROUND LIGHTNING...POSSIBLE SMALL...STRONG GUSTY WINDS AND FLOODING OF LOW LYING AREAS AND ROADWAYS FOR THE NEXT TWO HOURS.
Local storm report, Aug 30, 7:35 PM EDT, 2 hours 53 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE ATLANTA, GA 735 PM THU AUG 30 1990 COUNTY...... HEARD COUNTY LOCATION.... WEST OF FRANKLIN GA SOURCE...... HEARD COUNTY SHERRIF TIME........ 715 PM EDT FTYPE STORM.. SEVERE THUNDERSTORM DAMAGE...... NONE REPORTED HAIL........ GOLFBALL SIZE HAIL ENCOUNTERED ON HIGHWAY 34. INJURIES.... NONE REPORTED. COSTS....... UNKNOWN
Special weather statement, Aug 30, 7:41 PM EDT, 2 hours 47 minutes before
GAZ002-004-310100- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATHENS GA 735 PM EDT THU AUG 30 1990 ...THUNDERSTORMS WITH VERY HEAVY RAIN OVER NORTHEAST GEORGIA... AT 730 PM EDT A THUNDERSTORM WITH VERY HEAVY RAINFALL WAS INDICATED OVER NORTHEAST GEORGIA ALONG THE MADISON/FRANKLIN LINE. THIS THUNDERSTORM WAS MOVING TO THE EAST AT 25 MILES AN HOUR. PEOPLE IN MADISON...FRANKLIN AND HART COUNTIES OF NORTHEAST GEORGIA SHOULD REMAIN ALERT FOR BRIEF HEAVY RAINFALL...FREQUENT CLOUD TO GROUND LIGHTNING...POSSIBLE SMALL HAIL...STRONG GUSTY WINDS AND FLOODING OF LOW LYING AREAS AND ROADWAYS FOR THE NEXT HOUR. OTHERWISE...THUNDERSTORMS...SOME WITH HEAVY RAINFALL...COUNTIINUED OVER NORTHEAST AND WEST CENTRAL GEORGIA AND THE WESTERN CAROLINAS. MOVEMENT EAST 20 MILES AN HOUR.
Special weather statement, Aug 30, 10:08 PM EDT, 20 minutes before
GAZ003-310300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATLANTA GA 1005 PM EDT THU AUG 30 1990 ...A FEW STRONG THUNDERSTORMS IN NORTHWEST GEORGIA... AT 1000 PM A FEW THUNDERSTORMS HAD DEVELOPED IN NORTHWEST GEORGIA... FROM THE NORTHERN PART OF METROPOLITAN ATLANTA SOUTH TO NEAR GRIFFIN. DANGEROUS LIGHTNING...GUSTY WINDS AND LOCALLY HEAVY RAINS ACCOMPANY THESE STORMS. MARBLE SIZE HAIL WAS REPORTED WITH THE STRONGEST STORM WHICH WAS LOCATED IN NORTHERN DEKALB COUNTY. THUNDERSTORMS WERE MOVING SLOWLY NORTHEAST. A FEW STRONG STORMS MAY CONTINUE TO DEVELOP IN NORTHWEST GEORGIA OVER THE NEXT FEW HOURS...SO YOU ARE URGED TO STAY ALERT FOR RAPID WEATHER CHANGES AND BE PREPARED TO TAKE SHELTER IF THREATENING WEATHER APPROACHES.
Nearby
Severe Thunderstorm Warnings in Georgia, 1990Every severe thunderstorm warning in 1990
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.