Alert archive / Tennessee / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 322, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 29, 1990, 5:56 PM EDT for Bradley County, Hamilton County, Polk County, Tennessee. It was in force for 64 min. 3 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, 5:56 PM EDT (21:56 UTC)
- Expired
- Aug 29, 1990, 7:00 PM EDT
- In force
- 64 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
Counties Bradley County, TN, Hamilton County, TN, Polk 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 29, 6:05 PM EDT | Hail 0.75 | Polk, TN | |
| Aug 29, 6:05 PM EDT | Thunderstorm Wind 0 | Bradley, TN | |
| Aug 29, 6:20 PM EDT | Thunderstorm Wind 0 | Hamilton, 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, 9.9 hours before the alert went out and 192 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHA 292155 SVRCHA TNC011-065-139-292300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHATTANOOGA TENNESSEE 556 PM EDT WED AUG 29 1990 THE NATIONAL WEATHER SERVICE IN CHATTANOOGA TENNESSEE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS IN SOUTHEAST TENNESSEE ...BRADLEY COUNTY...HAMILTON COUNTY...POLK COUNTY AT 550 PM EDT THE CHATTANOOGA WEATHER RADAR INDICATED SEVERE THUNDERSTORMS MOVING INTO NORTHERN HAMILTON...BRADLEY AND POLK COUNTIES IN SOUTHEAST TENNESSEE. THESE STORMS HAVE PRODUCE WIDESPREAD WIND DAMAGE IN RHEA...MEIGS AND MCMINN COUNTIES AS THEY MOVED TO THE SOUTHEAST. 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.
What forecasters said that day
The local office's own words before this severe thunderstorm 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, Aug 29, 5:12 PM EDT, 44 minutes before
GAZ008-011-292315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBUS GA 511 PM EDT WED AUG 29 1990 A FEW VERY STRONG THUNDERSTORMS WERE IN SOUTHWEST GEORGIA OCCURRING IN AN AREA OF RAIN FROM 5 MILES SOUTHEAST OF SYLVESTER TO 14 MILES SOUTHEAST OF MOULTRIE. THE STRONGEST THUNDERSTORMS WERE JUST NORTH AND SOUTH OF BRIDGEBORO AND 4 MILES SOUTHEAST OF DOERUN, THESE STORMS WERE MOVING SLOWLY NORTHWEST. THE COLQUITT COUNTY EMA HAS REPORTED SMALL HAIL AND STRONG GUSTY WINDS WITH THESE STORMS..ALSO A HOUSE TRAILER WAS REPORTED BLOWN OVER NEAR DOERUN. PERSONS NEAR THESE STORMS SHOULD BE READY TO TAKE PROTECTIVE ACTION. DANGEROUS LIGHTNING AND VERY HEAVY RAIN WILL ALSO ACCOMPANY THESE STORMS. LISTEN TO NOA WEATHER RADIO FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 4:53 PM EDT | Severe Thunderstorm Warning | FFC | Meigs, Rhea | 67 min |
| Aug 29, 5:17 PM EDT | Severe Thunderstorm Warning | FFC | McMinn | 58 min |
| Aug 29, 7:00 PM EDT | Severe Thunderstorm Warning | FFC | Sequatchie | 45 min |
| Aug 29, 7:14 PM EDT | Severe Thunderstorm Warning | FFC | Marion | 46 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.