Alert archive / Georgia / Flash Flood Warnings in 1989

Flash Flood Warning 19, NWS Atlanta, GA

July 4, 1989Catoosa County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jul 4, 1989, 7:50 PM EDT for Catoosa County, Georgia. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jul 4, 1989, 7:50 PM EDT (23:50 UTC)
Expired
Jul 4, 1989, 9:50 PM EDT
In force
2 hr
Issued by
NWS Atlanta, GA
Area
Whole counties

County Catoosa 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

Nashville Metro, TN (KBNA), launched 12:00Z, 11.8 hours before the alert went out and 190 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, Nashville Metro, TN at 12:00Z on 1989-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 349 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, Nashville Metro, TN at 12:00Z on 1989-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939Sfc1 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
349 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
533 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
0 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 KCHA 042349
FFWCHA
GAC047-050145-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TN
750 PM EDT TUE JUL 4 1989
 
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  950 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTHWEST GEORGIA
          ...CATOOSA
 
AT 735 PM EDT THE FORT OGLETHORPE FIRE DEPARTMENT REPORTED NEARLY 3
FEET OF WATER IN THE PINEWOOD CIRCLE AREA OF FORT OGLETHORPE AND
THAT EVAUCATIONS WERE BEGINNING.
 
AT 740 PM THE CHATTANOOGA WEATHER RADAR INDICATED SHOWERS AND
THUNDERSTORMS...SOME WITH HEAVY RAIN...IN THE FORT OGLETHORPE AREA
THUS ADDITIONAL FLASH FLOODING IS POSSIBLE.
 
 
 
 
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 SMKALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

What forecasters said that day

The local office's own words before this flash flood 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, Jul 4, 2:54 PM EDT, 4 hours 56 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBUS GA
255 PM EDT TUE JUL 4 1989

AT 245 PM EDT COLUMBUS WEATHER RADAR INDICATED NUMEROUS THUNDERSHOWERS
SCATTERED FROM NEAR LUMPKIN GEORGIA INTO ALABAMA TO NORTH OF SEALE AND
JUST EAST OF TUSKEGEE. THESE THUNDERSHOWERS WERE IN ANOTHER LARGE AREA
OF RAIN THAT WAS OCCURRING FROM RICHLAND AND EDISON GEORGIA TO
WETUMPKA ALABAMA. MOVEMENT HAS BEEN TO THE NORTHEAST AT 10 MILES AN
HOUR.

PERSONS ACROSS EXTREME EASTERN ALABAMA AND WEST CENTRAL GEORGIA CAN
EXPECT MORE HEAVY RAIN WHICH WILL CAUSE HEAVY STREET FLOODING AND
SOME OF THE SMALL CREEKS AND DRIANAGE DITCHES TO BECOME FULL AMD
OVERFLOWING. WITH 5.45 INCHES OF RAIN ON METROPOLITAN COLUMBUS AND
PHENIX CITY YESTERDAY THE GROUND AND WATER SHED LAKES ARE FULL AND
FLOODING WILL OCCUR QUICKLY. EVERYONE IN FLOOD PRONE AREAS ACROSS
COLUMBUS AND PHENIX CITY SHOULD BE READY TO TAKE QUICK ACTION SINCE
FLASH FLOODING IS IN A HIGH PROBABILITY. DANGEROUS LIGHTNING AND GUSTY
WINDS WILL ALSO ACCOMPANY THE THUNDERSTORMS. PLEASE LISTEN TO NOAA
WEATHER RADIO OR OTHER NEWS MEDIA FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
Special weather statement, Jul 4, 4:30 PM EDT, 3 hours 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MACON GA
430 PM EDT TUE JUL 4 1989

AT 425 PM EDT WEATHER SERVICE RADAR SHOWED A BROAD BAND OF RAIN WITH
EMBEDDED THUNDERSTORMS APPROACHING CENTRAL GEORGIA FROM THE WEST AND
THE SOUTHWEST. THE BAND OF RAIN WAS FROM NEAR LAGRANGE SOUTHEASTWARD
TO 20 MILES WEST OF MACON TO 15 MILES SOUTHWEST OF WARNER ROBINS.
THE THUNDERSTORMS WITH HEAVIEST RAIN WERE 5 MILES NORTH OF FORT VALLEY
IN PEACH COUNTY.

ALL THE RAIN AND STORMS WERE MOVING NORTHEAST 15 MILES AN HOUR BUT AT
THE SAME TIME LOCAL CLOUDS WERE DEVELOPING RAPIDLY TO NEAR THUNDERSTORM
STRENGTH. WE COULD SUDDENLY HAVE A THUNDERSTORM RIGHT HERE WITH LITTLE
ADVANCE NOTICE.

THESE STORMS COULD I&NTENSIFY QUICKLY. STAY TUNED TO RADIO FOR MORE
ON THESE STORMS AS MACON WEATHER RADAR CHECKS THEIR PROGRESS.
Special weather statement, Jul 4, 6:10 PM EDT, 1 hour 40 minutes before
SPECIA KATL 042210
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTA GA
605 PM EDT TUE JUL 04 1989

...THUNDERSTORMS WITH HEAVY RAIN ACROSS THE SOUTH METRO AREA...

AT 600 PM RADAR INDICATED SEVERAL THUNDERSTORMS WITH VERY HEAVY RAIN
ACROSS THE SOUTH METROPOLITAN AREA OF ATLANTA. THEY EXTENDED FROM
FAIRBURN IN SOUTH FULTON COUNTY EASTWARD ACROSS FAYETTE AND HENRY
COUNTIES TO JACKSON IN BUTTS COUNTY. THEY WERE MOVING TO THE NORTHEAST
AT 15 MPH. THIS WILL BRING SOME THUNDERSTORMS ACROSS THE SOUTH AND EAST
PORTIONS OF THE ATLANTA METROPOLITAN AREA IN THE NEXT SEVERAL HOURS.

WITH THE RECENT HEAVY RAINS THESE THUNDERSTORMS ARE CAPABLE OF QUICKLY
FLOODING STREETS AND SMALL STREAMS AS THEY MOVE THROUGH THE AREA.
RESIDENTS SHOULD BE ALERT TO ANY PROLONGED DOWNPOURS AND AVOID KNOWN
FLOOD PRONE AREAS.
Special weather statement, Jul 4, 7:18 PM EDT, 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATHENS GA
710 PM EDT TUE JUL 4 1989

A LINE OF THUNDERSTORMS CAPABLE OF PRODUCING HEAVY RAIN...FREQUENT
LIGHTNING...GUSTY WINDS AND SMALL HAIL WAS INDICATED FROM NEAR ATLANTA
SOUTHEAST TO NEAR SPARTA IN HANCOCK COUNTY.

THIS LINE OF THUNDERSTORMS WAS MOVING TO THE NORTHEAST AT 15 MILES AN
HOUR AND WILL BE ENTERING THE NORTHEAST GEORGIA COUNTIES...GREENE...
MORGAN AND NEWTON WITHIN 15 TO 30 MINUTES ON ITS WAY NORTHEASTWARD.

PERSONS IN THOSE COUNTIES AND COUNTIES TO THE NORTH SHOULD BE ALERT
FOR THE PASSAGE OF THESE STORMS AND ACCOMPANING WEATHER.

LISTEN TO NOAA RADIO OR OTHER RADIOS FOR FURTHER STATEMENTS ON THESE
THUNDERSTORMS.

Nearby

Flash Flood Warnings in Georgia, 1989Every flash flood warning in 1989

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.