Alert archive / Tennessee / Flash Flood Warnings in 1989
Flash Flood Warning 11, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Jun 20, 1989, 2:50 PM EDT for Hamilton County, Tennessee. It was in force for 115 min.
The area
The counties it named.
The facts
- Issued
- Jun 20, 1989, 2:50 PM EDT (18:50 UTC)
- Expired
- Jun 20, 1989, 4:45 PM EDT
- In force
- 115 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Hamilton County, TN
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, 6.8 hours before the alert went out and 167 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
- 463 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 599 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 35 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 KCHA 201856
FFWCHA
TNC065-202045-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TN
250 PM EDT TUE JUN 20 1989
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 445 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST TENNESSEE
...HAMILTON
AT 2 50 EDT THIS AFTERNOON RADAR CONTINUED TO INDICTATE THUNDERSTORMS
WITH VERY HEAVY RAIN MOVING NORTHEAST ACROSS THE COUNTY.
SOME FLOODING HAS BEEN REPORTED IN PARTS OF THE COUNTY AND THE
ADDITIONAL RAIN FALLING IS GOING TO MAKE CONDITIONS MUCH WORSE.
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 A-UTOMOBILES. 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 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, Jun 20, 12:45 PM EDT, 2 hours 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATHENS GA 1240 PM EDT TUE JUN 20, 1989 ...HEAVY RAINFALL AMOUNTS NOW OCCRING IN PORTIONS OF NORTHEAST GEORGIA... NARROW BAND OF HEAVY RAINFALL OCCURING FROM NEAR TOCCOA TO JUST NORTH OF JEFFERSON TO JUST NORTH OF GRIFFIN , GEORGIA. STROMS CONTINUE TO MOVE ALONG THE SAME AREA CASUSING HEAVY SHOWER AFTER HEAVY SHOWER WITH RAINFALL RATES GREATER THAN AN INCH AN HOUR. PERSONS IN LOW LYING AREAS AND NEAR SMALL STREAMS SHOULD BE VERY WATCHFUL TO THE AREA AROUND THEM . WITH SUCH HEAVY RAINFALL RATES THE WATER CAN RISE VERY QUICKLY CUTTING OFF ROUTES OF ESCAPE. DO NOT PUT OFF MOVING OUT IF RAINFALL RATES ARE HEAVY IN YOUR AREA. YOUR LIFE MAY COUNT ON YOUR PROMPT ACTION.
Special weather statement, Jun 20, 1:40 PM EDT, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATHENS GA 135 PM EDT TUE JUN 20 1989 BAND OF HEAVY RAIN FROM SOUTH OF ASHEVILLE NORTH CAROLINA TO NEAR WALHALLA IN SOUTH CAROLINA TO NEAR WINDER GEORGIA TO NEAR GRIFFIN GEORGIA AND ALSO IN THE ATLANTA AREA. RAINFALL RATES IN THIS BAND GREATER THAN ONE INCH AN HOUR. STREAMS IN HABERSAHM COUNTY ARE RISING AT A RAPIDED RATE CASUSING SOME ROADS TO BE CLOSED. MANY COUNTIES IN THE ATLANTA AREA ARE NOW UNDER FLASH FLOOD WARNINGS WHILE MOST OF NORTH GEORGIA REMAINS UNDER A FLASH FLOOD WATCH. IN GENERAL AREA OF RAIN AND THUNDERSTORMS 75 MILES WIDE FROM NEAR MONTGOMERY ALABAMA NORTHEAST THROUGH GEORGIA TO NEAR ASHEVILLE NORTH CAROLINA WITH OTHER SHOWERS OVER SOUTH GEORGIA AND SOUTH CAROLIA. ELEMENTS MOVING NORTH-NORTHEAST AT 30 MPH.
Special weather statement, Jun 20, 2:18 PM EDT, 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MACON GA 218 PM EDT TUE JUNE 20 1989 ...FLASH FLOOD WATCH FOR NORTHEAST..CENTRAL..AND SOUTHWEST GEORGIA FOR TODAY... AT AT 210 PM A STRONG THUNDERSTORM MOVED INTO TURNER COUNTY SOUTH OF REBECCA AND WAS MOVING NORTHEAST 20 MILES AN HOUR TOWARD BEN HILL AND WILCOX COUNTIES. OTHER THUNDERSTORMS WERE INCREASING STRENGTH IN A LINE FROM NORTH OF ABBEVILLE SOUTH TO NEAR REBECCA. THESE NEWLY FORMED STORMS WERE MOVING NORTHEAST 20 MILES AN HOUR. VERY HEAVY RAIN AND FREQUENT LIGHTNING WITH WIND GUSTS OVER 40 MILES AN HOUR COME WITH THESE STORMS. LOW AREAS COULD FLOOD QUICKLY AS THIS LINE OF STORMS FOLLOWS ONE AFTER ANOTHER THROUGH TURNER..BEN HILL AND WILCOX COUNTIES IN THE NEXT TWO HOURS.
Special weather statement, Jun 20, 2:25 PM EDT, 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATHENS GA 220PM TUE JUN 20, 1989 COOP OBSERVER IN GAINESVILLE , GEORGIA, REPORTS 3 INCHES OF RAIN IN PAST 24 HOURS.. PD IN WINDER , GEORGIA,! REPORTS FLOODING OF UNDERPASS IN THAT CITY.. HABERSHAM EOC REPORTS ROAD IN NORTH PART OF THAT COUNTY CLOSED DUE TO 3 FOOT OF WATER OVER THE ROAD AND STILL RISING. MORE ROADS LIKELY TO BECOME CLOSE...
Special weather statement, Jun 20, 2:35 PM EDT, 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATHENS GA 335 PM TUE JUN 20, 1989 COOP OBSERVER 6 NORTHWEST OF CLAYTON, GEORGIA, REPORTS 3.63 INCHES OF RAIN IN PAST 15 HOURS. LAKE BURTON IN RABUN CO(UNTY NEAR BANK FULL AT THIS TIME.
Special weather statement, Jun 20, 2:47 PM EDT, 3 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATHENS GA 243 PM EDT TUE JUN 20 1989 AT 235 PM EDT...A BAND OF THUNDERSTORMS WITH VERY HEAVY RAIN... EXTENDED FROM NEAR BARNESVILLE IN WEST CENTRAL GEORGIA THROUGH CONYERS TO JUST SOUTH OF TOCCOA IN NORTHEAST GEORGIA. THIS BAND WAS 8 MILES WIDE AND WAS MOVING NORTH-NORTHEAST AT 30 MILES AN HOUR. FLOODING HAS ALREADY BEEN REPORTED IN SOME OF THESE COUNTIES. PERSONS IN NORTHEAST GEORGIA SHOULD BE ON THE ALERT FOR POSSIBLE FLOODING FOR THE REST OF THE AFTERNOON. BANKS...BARROW...HABERSHAM ...HALL...JACKSON...STEPHENS AND WALTON COUNTIES OF NORTHEAST GEORGIA ARE UNDER A FLASH FLOOD WARNING UNTIL 515 PM EDT THIS 3AFTERNOON. MOVEMENT WAS NORTHEAST 30 MILES AN HOUR.
Nearby
Flash Flood Warnings in Tennessee, 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.