Alert archive / Georgia / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 439, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 16, 1997, 7:17 PM EDT for Twiggs County, Georgia. It was in force for 28 min. 1 report 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 16, 1997, 7:17 PM EDT (23:17 UTC)
- Expired
- Aug 16, 1997, 7:45 PM EDT
- In force
- 28 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Twiggs County, GA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 16, 7:20 PM EDT | Hail 0.75 | Danville, GA | WMAZ TV in Macon received a report of dime size hail. |
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.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.3 hours before the alert went out and 127 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
- 1945 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 670 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- -22 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 162311 RRA SVRATL GAC289-162345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 717 PM EDT SAT AUG 16 1997 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 745 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL GEORGIA ...TWIGGS COUNTY AT 715 PM WEATHER RADAR INDICATED A SEVERE THUNDERSTORM AROUND 5 MILES WEST OF JEFFERSONVILLE ALONG INTERSTATE 16. THERE WAS LITTLE MOVEMENT WITH THIS SEVERE STORM. 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. 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.
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 16, 4:39 PM EDT, 2 hours 38 minutes before
GAZ074>076-085>088-097>101-108>119-125-127>141-143>166-171200- EXCESSIVE HEAT ADVISORY NATIONAL WEATHER SERVICE PEACHTREE CITY GA 500 PM EDT SAT AUG 16 1997 A HEAT ADVISORY REMAINS IN EFFECT FOR EAST CENTRAL AND SOUTH GEORGIA FOR SUNDAY AFTERNOON. A HOT AND HUMID AIRMASS WILL CONTINUE ACROSS THIS AREA THROUGH THE WEEKEND. COUNTIES IN THE ADVISORY AREA ARE GENERALLY SOUTH OF A LINE FROM COLQUITT TO ABBEVILLE TO GIBSON. AFTERNOON TEMPERATURES IN THE 90S WITH HUMIDITIES OF 45 TO 55 PERCENT WILL PRODUCE HEAT INDICES AROUND 105 DEGREES IN THE ADVISORY AREA. THE HEAT INDEX IS A MEASURE OF THE COMBINED EFFECTS OF TEMPERATURE AND HUMIDITY ON THE HUMAN BODY. WITH PROLONGED EXPOSURE AND/OR PHYSICAL ACTIVITY...THESE DANGEROUS HEAT INDICES CAN CAUSE HEAT CRAMPS AND HEAT EXHAUSTION THAT CAN LEAD TO HEAT STROKE. THOSE INVOLVED IN OUTDOOR ACTIVITIES SHOULD TAKE EXTRA PRECAUTIONS. DRINK PLENTY OF WATER AND OTHER NON-ALCOHOLIC FLUIDS. REDUCE PHYSICAL ACTIVITIES AND SPEND MORE TIME IN AIR CONDITIONING. ELDERLY PERSONS ARE MORE PRONE TO THE EFFECTS OF THESE DANGEROUS CONDITIONS. SINCE HEAT INDEX VALUES WERE DEVISED FOR SHADY...LIGHT WIND CONDITIONS...EXPOSURE TO FULL SUNSHINE CAN INCREASE <HEAT INDEX VALUES BY 15 DEGREES.
Special weather statement, Aug 16, 5:00 PM EDT, 2 hours 17 minutes before
GAZ074>076-085>088-097>101-108>119-125-127>141-143>166-171200- EXCESSIVE HEAT ADVISORY NATIONAL WEATHER SERVICE PEACHTREE CITY GA 500 PM EDT SAT AUG 16 1997 A HEAT ADVISORY REMAINS IN EFFECT FOR EAST CENTRAL AND SOUTH GEORGIA FOR SUNDAY AFTERNOON. A HOT AND HUMID AIRMASS WILL CONTINUE ACROSS THIS AREA THROUGH THE WEEKEND. COUNTIES IN THE ADVISORY AREA ARE GENERALLY SOUTH OF A LINE FROM COLQUITT TO ABBEVILLE TO GIBSON. AFTERNOON TEMPERATURES IN THE 90S WITH HUMIDITIES OF 45 TO 55 PERCENT WILL PRODUCE HEAT INDICES AROUND 105 DEGREES IN THE ADVISORY AREA. THE HEAT INDEX IS A MEASURE OF THE COMBINED EFFECTS OF TEMPERATURE AND HUMIDITY ON THE HUMAN BODY. WITH PROLONGED EXPOSURE AND/OR PHYSICAL ACTIVITY...THESE DANGEROUS HEAT INDICES CAN CAUSE HEAT CRAMPS AND HEAT EXHAUSTION THAT CAN LEAD TO HEAT STROKE. THOSE INVOLVED IN OUTDOOR ACTIVITIES SHOULD TAKE EXTRA PRECAUTIONS. DRINK PLENTY OF WATER AND OTHER NON-ALCOHOLIC FLUIDS. REDUCE PHYSICAL ACTIVITIES AND SPEND MORE TIME IN AIR CONDITIONING. ELDERLY PERSONS ARE MORE PRONE TO THE EFFECTS OF THESE DANGEROUS CONDITIONS. SINCE HEAT INDEX VALUES WERE DEVISED FOR SHADY...LIGHT WIND CONDITIONS...EXPOSURE TO FULL SUNSHINE CAN INCREASE HEAT INDEX VALUES BY 15 DEGREES.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 6:42 PM EDT | Severe Thunderstorm Warning | FFC | Taylor | 33 min |
| Aug 16, 7:14 PM EDT | Severe Thunderstorm Warning | FFC | Baldwin | 31 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 1997Every severe thunderstorm warning in 1997
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.