Alert archive / Georgia / Flash Flood Warnings in 1990

Flash Flood Warning 10, NWS Atlanta, GA

February 16, 1990Polk County, Georgia

NWS Atlanta, GA issued this flash flood warning at Feb 16, 1990, 3:51 AM EST for Polk County, Georgia. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Feb 16, 1990, 3:51 AM EST (08:51 UTC)
Expired
Feb 16, 1990, 8:00 AM EST
In force
4 hr
Issued by
NWS Atlanta, GA
Area
Whole counties

County Polk 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, 8.9 hours before the alert went out and 174 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.

Skew-T log-pSkew-T log-p diagram, Athens Municipal, GA at 00:00Z on 1990-02-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Athens Municipal, GA at 00:00Z on 1990-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1378 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
171 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KATL 160853
FFWATL
GAC015-111-123-129-213-227-233-161300-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ATLANTA GA
351 AM EST FRI FEB 16 1990
 
THE NATIONAL WEATHER SERVICE IN ATLANTA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  800 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTHWEST GEORGIA
          ...BARTOW...FANNIN...GILMER...GORDON...MURRAY...PICKENS
          ...POLK
 
4 TO 6 INCHES OF RAIN HAS BEEN REPORTED ACROSS ALL OF NORTHWEST
GEORGIA IN THE LAST 12 HOURS... INCLUDING OVER 6 INCHES AT ETON
IN MURRAY COUNTY. NUMEROUS ROADS HAVE BEEN FLOODED AND EVACUATIONS
HAVE BEEN UNDERWAY IN SEVERAL COUNTIES DUE TO FLOOD WATERS.
 
RAIN IS CONTINUING OVER NORTHWEST GEORGIA AND AN ADDITIONAL 1 TO 2
INCHES IS POSSIBLE THIS MORNING.
 
BIG CEDAR CREEK AT CEDARTOWN IN POLK COUNTY WAS AT 13.6 FEET AND
RISING AT 345 AM. A CREST NEAR THE FLOOD STAGE OF 15 FEET IS
EXPECTED AT CEDARTOWN THIS MORNING... BUT WITH ANY ADDITIONAL
HEAVY RAIN MOVING IN FROM ALABAMA THE CREST COULD BE HIGHER.
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
MOST DEATHS IN FLASH FLOODING 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.

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 16, 12:16 AM ESTFlash Flood WarningFFCChattooga, Floyd3 hr
Feb 16, 12:52 AM ESTFlash Flood WarningFFCBartow, Gilmer, Gordon, Pickens3 hr
Feb 16, 12:52 AM ESTFlash Flood WarningFFCFannin, Murray3 hr
Feb 16, 1:22 AM ESTSevere Thunderstorm WarningFFCFloyd, Polk53 min
Feb 16, 1:23 AM ESTFlash Flood WarningFFCDade, Walker3 hr
Feb 16, 1:23 AM ESTFlash Flood WarningFFCCatoosa, Whitfield3 hr
Feb 16, 3:08 AM ESTFlash Flood WarningFFCChattooga, Floyd3 hr
Feb 16, 3:51 AM ESTFlash Flood WarningFFCFannin4 hr
Feb 16, 3:51 AM ESTFlash Flood WarningFFCBartow, Gilmer, Gordon, Murray, Pickens4 hr
Feb 16, 4:39 AM ESTFlash Flood WarningFFCCatoosa, Walker, Whitfield3 hr
Feb 16, 4:39 AM ESTFlash Flood WarningFFCDade3 hr
Feb 16, 5:58 AM ESTSevere Thunderstorm WarningFFCCobb, Douglas, Fulton47 min
Feb 16, 6:29 AM ESTFlash Flood WarningFFCFannin, Gilmer, Murray6 hr
Feb 16, 6:29 AM ESTFlash Flood WarningFFCBartow, Floyd, Gordon, Pickens, Polk6 hr
Feb 16, 6:29 AM ESTFlash Flood WarningFFCChattooga6 hr
Feb 16, 6:58 AM ESTSevere Thunderstorm WarningFFCHall62 min
Feb 16, 7:03 AM ESTSevere Thunderstorm WarningFFCGwinnett27 min
Feb 16, 7:20 AM ESTSevere Thunderstorm WarningFFCNewton, Walton55 min
Feb 16, 7:20 AM ESTSevere Thunderstorm WarningFFCBanks, Barrow, Jackson55 min
Feb 16, 7:20 AM ESTSevere Thunderstorm WarningFFCHabersham55 min
Feb 16, 8:55 AM ESTSevere Thunderstorm WarningFFCRockdale35 min
Feb 16, 9:39 AM ESTSevere Thunderstorm WarningFFCHeard, Troup66 min
Feb 16, 10:04 AM ESTSevere Thunderstorm WarningFFCCoweta41 min
Feb 16, 10:43 AM ESTFlash Flood WarningFFCCobb, DeKalb, Fulton4 hr
Feb 16, 12:38 PM ESTSevere Thunderstorm WarningFFCHouston37 min

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.