Alert archive / Tennessee / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 28, NWS Nashville, TN

July 3, 1992Williamson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 3, 1992, 3:21 AM CDT for Williamson County, Tennessee. It was in force for 54 min.

The area

The counties it named.

The facts

Issued
Jul 3, 1992, 3:21 AM CDT (08:21 UTC)
Expired
Jul 3, 1992, 4:15 AM CDT
In force
54 min
Issued by
NWS Nashville, TN
Area
Whole counties

County Williamson County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 8.4 hours before the alert went out and 38 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 1992-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3554 joules per kilogram.LCLEL10008507005003002001001 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 1992-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
3554 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1096 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
130 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 030822
SVRBNA
TNC187-030915-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
321 AM CDT FRI JUL 3 1992
 
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  415 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN MIDDLE TENNESSEE
 
   ...WILLIAMSON COUNTY
 
AT 320 AM CDT...NASHVILLE RADAR INDICATED A SEVERE THUNDERSTORM
MOVING INTO SOUTHWESTERN WILLIAMSON COUNTY. STRONG WINDS, HAIL,
AND DANGEROUS LIGHTNING MAY BE ASSOCIATED WITH THIS STORM.
 
THE STORM WAS MOVING EAST AT 25 MILES AN HOUR.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 4:02 AM CDTFlash Flood WarningOHXDavidson3 hr
Jul 3, 4:52 AM CDTFlash Flood WarningOHXSumner, Wilson3 hr
Jul 3, 5:47 AM CDTTornado WarningOHXLincoln28 min
Jul 3, 7:02 AM CDTFlash Flood WarningOHXDavidson, Sumner, Wilson3 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 1992Every severe thunderstorm warning in 1992

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.