Alert archive / Tennessee / Flash Flood Warnings in 1990

Flash Flood Warning 1, NWS Nashville, TN

February 3, 1990Sumner County, Tennessee

NWS Nashville, TN issued this flash flood warning at Feb 3, 1990, 8:20 AM CST for Sumner County, Tennessee. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Feb 3, 1990, 8:20 AM CST (14:20 UTC)
Expired
Feb 3, 1990, 9:00 AM CST
In force
40 min
Issued by
NWS Nashville, TN
Area
Whole counties

County Sumner 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, 2.3 hours before the alert went out and 40 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 031422
FFWBNA
TNC165-031500-
 
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
820 AM CST SAT FEB 3 1990
 
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL  900 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN MIDDLE TENNESSEE
          ...NORTHWESTERN SUMNER
 
CONTINUED HEAVY RAINS IN THE CITY OF PORTLAND HAS CAUSED SMALL STREAMS
IN THE AREA TO OVERFLOW.
 
A REPORT FROM A SEVERE WEATHER SPOTTER IN PORTLAND INDICATES OVER
THREE INCHES OF RAIN HAS FALLEN DURING THE LAST COUPLE OF HOURS.
 
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE W9ATER 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, 8:34 AM CSTFlash Flood WarningOHXRobertson116 min
Feb 3, 9:27 AM CSTFlash Flood WarningOHXRutherford, Williamson2 hr

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.