Alert archive / Tennessee / Flash Flood Warnings in 1989

Flash Flood Warning 13, NWS Nashville, TN

July 3, 1989Robertson County, Tennessee

NWS Nashville, TN issued this flash flood warning at Jul 3, 1989, 4:00 AM CDT for Robertson County, Tennessee. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jul 3, 1989, 4:00 AM CDT (09:00 UTC)
Expired
Jul 3, 1989, 6:00 AM CDT
In force
2 hr
Issued by
NWS Nashville, TN
Area
Whole counties

County Robertson 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 00:00Z, 9.0 hours before the alert went out and 50 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 00:00Z on 1989-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 700 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 00:00Z on 1989-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
700 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
589 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBNA 030900
FFWBNA
TNC147-031100-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
400 AM CDT MON JUL 3 1989
 
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  600 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN MIDDLE TENNESSEE
          ...ROBERTSON
 
RADAR SHOWS A SERIES OF STORM SYSTEMS MOVING OVER ROBERTSON COUNTY
IN THE PAST 2 HOURS. ESTIMATED RAINFALL IS FROM 1 TO 2 INCHES...ON
GROUND ALREADY SATURATED BY PREVIOUS RAINS.   ROBERTSON COUNTY
CIVIL DEFENSE REPORT SOME FLOODING AND ROAD CLOSURES IN THE COUNTY
AT THE PRESENT TIME.  SOME HOMES HAVE BEEN EVACUATED.
 
ANOTHER INCH OF RAIN OR MORE IS POSSIBLE DURING THE NEXT HOUR.
 
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.

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 3, 3:35 AM CDT, 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
335 AM CDT MON JUL 3 1989

...FLOODING IN ROBERTSON COUNTY...

THE SPRINGFIELD CIVIL DEFENSE REPORTS SOME FLOODING IN ROBERTSON
COUNTY DURING THE PAST FEW HOURS.  A FEW ROADS ARE BEING CLOSED DUE
TO HIGH WATER.

THE NASHVILLE RADAR SHOWS A LINE OF SHOWERS AND THUNDERSTORMS WITH
SOME HEAVY RAIN MOVING OVER THE ROBERTSON COUNTY AREA AT 330 AM.
THE RAIN SHOULD BE ENDING IN THE NEXT HOUR BUT THE SITUATION WILL
BE WATCHED CLOSELY.

IF YOU LIVE IN A FLOOD PRONE AREA BE READY TO MOVE TO HIGHER GROUND.
DO NOT DRIVE THROUGH AREAS WHERE WATER COVERS THE ROAD...ESPECIALLY
IF BARRACADES ARE UP.  STAY TUNED TO LOCAL RADIO OR TV STATIONS OR
TO NOAA WEATHER RADIO FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
FOR EVASIVE ACTION SHOULD HIGH WATER BE ENCOUNTERED.

The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 6:08 AM CDTFlash Flood WarningOHXRobertson2 hr

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.