Alert archive / Tennessee / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 320, NWS Atlanta, GA

August 29, 1990Meigs County, Rhea County, Tennessee

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 29, 1990, 4:53 PM EDT for Meigs County, Rhea County, Tennessee. It was in force for 67 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 29, 1990, 4:53 PM EDT (20:53 UTC)
Expired
Aug 29, 1990, 6:00 PM EDT
In force
67 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Meigs County, TN, Rhea County, TN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Aug 29, 5:15 PM EDTThunderstorm Wind 0Rhea, TN
Aug 29, 5:17 PM EDTThunderstorm Wind 0Meigs, TN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.9 hours before the alert went out and 168 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 1990-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1006 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 12:00Z on 1990-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.193958Sfc1 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
1006 J/kg
Mixed-layer CIN
-137 J/kg
Mixed-layer LCL
1717 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCHA 292054
SVRCHA
TNC121-143-292200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TENNESSEE
453 PM EDT WED AUG 29 1990
 
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA TENNESSEE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  600 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS
 
IN SOUTHEAST TENNESSEE
 
   ...MEIGS COUNTY...RHEA COUNTY
 
AT 450 PM EDT THE CHATTANOOGA WEATHER RADAR INDICATED A SEVERE
THUNDERSTORM IN NORHERN RHEA COUNTY...NEAR SPRING CITY.
 
THE STORM IS MOVING RAPIDLY SOUTHEAST AND WILL BE INTO MEIGS
COUNTY SHORTLY.
 
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF I55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 29, 5:17 PM EDTSevere Thunderstorm WarningFFCMcMinn58 min
Aug 29, 5:56 PM EDTSevere Thunderstorm WarningFFCBradley, Hamilton, Polk64 min
Aug 29, 7:00 PM EDTSevere Thunderstorm WarningFFCSequatchie45 min
Aug 29, 7:14 PM EDTSevere Thunderstorm WarningFFCMarion46 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1990Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.