Alert archive / Georgia / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 270, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 9, 1990, 8:30 PM EDT for Whitfield County, Georgia. It was in force for 60 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 9, 1990, 8:30 PM EDT (00:30 UTC)
- Expired
- Aug 9, 1990, 9:30 PM EDT
- In force
- 60 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Whitfield 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 9, 8:40 PM EDT | Hail 1.75 | Whitfield, 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, 0.5 hours before the alert went out and 180 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
- 1510 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1228 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHA 100031 SVRCHA GAC313-100130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHATTANOOGA TENNESSEE 830 PM EDT THU AUG 9 1990 THE NATIONAL WEATHER SERVICE IN CHATTANOOGA TENNESSEE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 930 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS IN NORTHWEST GEORGIA ...EASTERN WHITFIELD COUNTY AT 830 PM EDT THE CHATTANOOGA WEATHER RADAR INDICATED A SEVERE THUNDERSTORM IN EASTERN WHITFIELD COUNTY...JUST TO THE EAST OF DALTON. THE STORM IS MOVING SLOWLY TO THE SOUTH...ALONG THE MURRAY COUNTY LINE. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OtF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 8:45 PM EDT | Severe Thunderstorm Warning | FFC | Cherokee | 45 min |
| Aug 9, 8:57 PM EDT | Severe Thunderstorm Warning | FFC | Walker | 63 min |
| Aug 9, 9:51 PM EDT | Severe Thunderstorm Warning | FFC | Catoosa | 69 min |
| Aug 9, 10:43 PM EDT | Severe Thunderstorm Warning | FFC | Floyd | 47 min |
| Aug 9, 11:13 PM EDT | Severe Thunderstorm Warning | FFC | Hall | 40 min |
| Aug 9, 11:57 PM EDT | Severe Thunderstorm Warning | FFC | Paulding | 33 min |
| Aug 10, 12:31 AM EDT | Severe Thunderstorm Warning | FFC | Carroll, Douglas | 29 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.