Alert archive / Georgia / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 339, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 30, 1990, 7:46 PM EDT for Heard County, Georgia. It was in force for 29 min.
The area
The counties it named.
The facts
- Issued
- Aug 30, 1990, 7:46 PM EDT (23:46 UTC)
- Expired
- Aug 30, 1990, 8:15 PM EDT
- In force
- 29 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Heard County, GA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Athens Municipal, GA (KAHN), launched 12:00Z, 11.8 hours before the alert went out and 184 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
- 407 J/kg
- Mixed-layer CIN
- -216 J/kg
- Mixed-layer LCL
- 1326 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 54 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 302348 SVRATL GAC149-310015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ATLANTA GA 746 PM EDT THU AUG 30 1990 THE NATIONAL WEATHER SERVICE IN ATLANTA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHWEST GEORGIA ...HEARD COUNTY AT 745 PM EDT RADAR SHOWED A SEVERE THUNDERSTORM 8 MILES NORTHWEST OF FRANKLIN. THIS STORM PRODUCED GOLFBALL SIZE HAIL WHEN IT PASSED OVER HIGHWAY 34 WEST OF FRANKLIN AT ABOUT 715 THIS EVENING. THE STORM IS DRIFTING ERRATICALLY... GENERALLY NORTH AND WEST. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
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, Aug 30, 6:37 PM EDT, 1 hour 9 minutes before
GAZ002-004-302200- SPECIAL WEATHER STATEMENT ...CORRECTION TO TEXT... NATIONAL WEATHER SERVICE ATHENS GA 625 PM EDT THU AUG 30 1990 ...THUNDERSTORMS WITH VERY HEAVY RAIN OVER NORTHEAST GEORGIA... AT 620 PM EDT A THUNDERSTORM WITH VERY HEAVY RAINFALL WAS INDICATED OVER SOUTHERN JACKSON COUNTY NEAR ARCADE GEORGIA. 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.
Local storm report, Aug 30, 6:40 PM EDT, 1 hour 6 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, 38 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, 34 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, 11 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, 5 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.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 8:57 PM EDT | Severe Thunderstorm Warning | FFC | DeKalb, Rockdale | 48 min |
| Aug 29, 9:48 PM EDT | Severe Thunderstorm Warning | FFC | Newton | 42 min |
| Aug 29, 10:18 PM EDT | Severe Thunderstorm Warning | FFC | Putnam | 42 min |
| Aug 30, 1:34 AM EDT | Severe Thunderstorm Warning | FFC | Emanuel, Johnson | 41 min |
| Aug 30, 1:42 PM EDT | Severe Thunderstorm Warning | FFC | Morgan | 48 min |
| Aug 30, 1:51 PM EDT | Severe Thunderstorm Warning | FFC | Crisp | 69 min |
| Aug 30, 2:12 PM EDT | Severe Thunderstorm Warning | FFC | Baldwin | 63 min |
| Aug 30, 4:58 PM EDT | Severe Thunderstorm Warning | FFC | Hall, Jackson | 62 min |
| Aug 30, 6:50 PM EDT | Severe Thunderstorm Warning | FFC | Coweta, Heard | 55 min |
| Aug 30, 7:49 PM EDT | Severe Thunderstorm Warning | FFC | Crawford | 41 min |
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; the sounding from the Mesonet's radiosonde archive.