Alert archive / Tennessee / Flash Flood Warnings in 1990

Flash Flood Warning 3, NWS Nashville, TN

February 3, 1990Rutherford County, Williamson County, Tennessee

NWS Nashville, TN issued this flash flood warning at Feb 3, 1990, 9:27 AM CST for Rutherford County, Williamson County, Tennessee. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Feb 3, 1990, 9:27 AM CST (15:27 UTC)
Expired
Feb 3, 1990, 11:30 AM CST
In force
2 hr
Issued by
NWS Nashville, TN
Area
Whole counties

Counties Rutherford County, TN, Williamson 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, 3.5 hours before the alert went out and 30 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 1990-02-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 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 1990-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 480 square meters per square second.19395878Sfc1 km3 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
16 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
577 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
480 m²/s²
0-3 km storm-relative helicity
568 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 KBNA 031530
FFWBNA
TNC149-187-031730-
 
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
927 AM CST SAT FEB 3 1990
 
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL 1130 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN MIDDLE TENNESSEE
          ...RUTHERFORD...WILLIAMSON
 
SEVERAL REPORTS HAVE BEEN RECEIVED FROM EMERGENCY MANAGEMENT PERSONNEL
REPORTING FLOODING OVER ROADS AND HIGHWAYS IN THESE COUNTIES.
RUTHERFORD COUNTY REPORTED THAT IT WAS NECESSARY TO EVACUATE FAMILIES
IN THE LASCASSAS AREA  THIS MORNING.
 
A FLASH FLOOD WATCH REMAINS IN EFFECT FOR MIDDLE TENNESSEE
 
 
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.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 3, 8:20 AM CSTFlash Flood WarningOHXSumner40 min
Feb 3, 8:34 AM CSTFlash Flood WarningOHXRobertson116 min

Nearby

Flash Flood Warnings in Tennessee, 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.