Alert archive / Georgia / Flash Flood Warnings in 1990
Flash Flood Warning 45, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Mar 17, 1990, 1:59 AM EST for Henry County, Rockdale County, Georgia. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Mar 17, 1990, 1:59 AM EST (06:59 UTC)
- Expired
- Mar 17, 1990, 6:00 AM EST
- In force
- 4 hr
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
Counties Henry County, GA, Rockdale 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 00:00Z, 7.0 hours before the alert went out and 85 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
- 60 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 953 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 428 m²/s²
- 0-3 km storm-relative helicity
- 525 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KATL 170703
FFWATL
GAC035-063-113-151-247-255-171-231-293-171100-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ATLANTA GA
159 AM EST SAT MAR 17 1990
THE NATIONAL WEATHER SERVICE IN ATLANTA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 600 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTHEAST GEORGIA
...BUTTS
IN NORTHWEST GEORGIA
...CLAYTON...FAYETTE...HENRY...ROCKDALE...SPALDING
IN WEST CENTRAL GEORGIA
...LAMAR...PIKE...UPSON
ALTHOUGH HEAVY RAINS ARE BEGINNING TO TAPER OFF IN PARTS OF
NORTHWEST GEORGIA FLOODING IS DEVELOPING DUE TO RAINS THAT
HAVE FALLEN DURING THE PAST SEVERAL HOURS. HEAVIEST RAINS
STILL OCCURRING AT 150 AM EST WERE MAINLY EAST AND SOUTH
OF ATLANTA...FROM CONYERS TO TOMASTON.
WATER IS COVERING MANY SECONDARY ROADS IN THE WARNING AREA.
IN SPAULDING COUNTY A PORTION OF HIGHWAY 41 - 19 BUSINESS
HAS BEEN CLOSED IN GRIFFIN. WATER WAS REPORTED ENTERING
BUSINESSES IN MC DONOUGH IN HENRY COUNTY.
PEOPLE LIVING BELOW SMALL EARTHEN DAMS MAY WANT TO KEEP
CHECK ON THE DAM'S CONDITION. MANY LAKES AND PONDS ARE
ABOUT TO OVERFLOW WHICH COULD CAUSE DAMS TO FAIL.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER OMOVE UP TO HIGHER GROUND.The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 7:06 PM EST | Tornado Warning | FFC | Morgan, Oconee | 69 min |
| Mar 16, 7:18 PM EST | Severe Thunderstorm Warning | FFC | Greene, Oconee, Oglethorpe | 57 min |
| Mar 16, 7:18 PM EST | Severe Thunderstorm Warning | FFC | Clarke, Jackson, Madison | 57 min |
| Mar 16, 7:18 PM EST | Severe Thunderstorm Warning | FFC | Banks, Franklin | 57 min |
| Mar 16, 7:40 PM EST | Tornado Warning | FFC | Clarke, Madison, Oglethorpe | 35 min |
| Mar 16, 7:53 PM EST | Severe Thunderstorm Warning | FFC | Elbert, Hart | 67 min |
| Mar 16, 7:59 PM EST | Severe Thunderstorm Warning | FFC | Wilkes | 61 min |
| Mar 16, 8:34 PM EST | Severe Thunderstorm Warning | FFC | Lincoln | 41 min |
| Mar 16, 8:59 PM EST | Severe Thunderstorm Warning | FFC | Lincoln | 61 min |
| Mar 16, 9:44 PM EST | Severe Thunderstorm Warning | FFC | Crawford, Monroe, Peach | 61 min |
| Mar 16, 9:44 PM EST | Severe Thunderstorm Warning | FFC | Jasper | 61 min |
| Mar 16, 9:52 PM EST | Flash Flood Warning | FFC | Polk | 8 hr |
| Mar 16, 9:57 PM EST | Flash Flood Warning | FFC | Cobb, Douglas, Fulton | 5 hr |
| Mar 16, 9:57 PM EST | Flash Flood Warning | FFC | DeKalb | 5 hr |
| Mar 16, 10:03 PM EST | Severe Thunderstorm Warning | FFC | Bibb, Jones | 57 min |
| Mar 17, 12:30 AM EST | Flash Flood Warning | FFC | DeKalb, Fulton | 6 hr |
| Mar 17, 12:30 AM EST | Flash Flood Warning | FFC | Cobb, Douglas | 6 hr |
| Mar 17, 1:59 AM EST | Flash Flood Warning | FFC | Clayton, Fayette, Spalding | 4 hr |
| Mar 17, 1:59 AM EST | Flash Flood Warning | FFC | Lamar, Pike, Upson | 4 hr |
| Mar 17, 1:59 AM EST | Flash Flood Warning | FFC | Butts | 4 hr |
| Mar 17, 2:26 AM EST | Severe Thunderstorm Warning | FFC | Crawford, Monroe | 64 min |
| Mar 17, 5:45 AM EST | Flash Flood Warning | FFC | Cobb, Douglas, Fulton | 6 hr |
| Mar 17, 5:45 AM EST | Flash Flood Warning | FFC | DeKalb | 6 hr |
| Mar 17, 6:08 AM EST | Flash Flood Warning | FFC | Butts, Clayton, Fayette, Henry, Lamar, Pike and 1 more | 4 hr |
| Mar 17, 6:08 AM EST | Flash Flood Warning | FFC | Upson | 4 hr |
| Mar 17, 6:08 AM EST | Flash Flood Warning | FFC | Rockdale | 4 hr |
| Mar 17, 6:37 AM EST | Flash Flood Warning | FFC | Fannin | 5 hr |
| Mar 17, 7:21 AM EST | Flash Flood Warning | FFC | White | 3 hr |
| Mar 17, 7:35 AM EST | Flash Flood Warning | FFC | Jasper, Jones, Monroe | 3 hr |
| Mar 17, 10:54 AM EST | Flash Flood Warning | FFC | Jones, Monroe | 3 hr |
Nearby
Flash Flood Warnings in Georgia, 1990Every flash flood 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.