Alert archive / Tennessee / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 351, NWS Atlanta, GA

September 10, 1990Bradley County, Tennessee

NWS Atlanta, GA issued this severe thunderstorm warning at Sep 10, 1990, 4:05 PM EDT for Bradley County, Tennessee. It was in force for 55 min. 1 report 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
Sep 10, 1990, 4:05 PM EDT (20:05 UTC)
Expired
Sep 10, 1990, 5:00 PM EDT
In force
55 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Bradley 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
Sep 10, 4:30 PM EDTHail 0.88Bradley, 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, 8.1 hours before the alert went out and 191 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 1990-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1990-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
60 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 102006
SVRCHA
TNC011-102100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TENNESSEE
405 PM EDT MON SEP 10 1990
 
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA TENNESSEE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS
 
IN SOUTHEAST TENNESSEE
 
   ...BRADLEY COUNTY
 
AT 403 PM EDT THE CHATTANOOGA WEATHER RADAR INDICATED A SEVERE
THUNDERSTORM IN BRADLEY COUNTY...JUST TO THE NORTHWEST OF
CLEVELAND.
 
THE STORM IS MOVING SLOWLY TO THE EAST...AND MAY PRODUCE SOME
MINOR FLOODING OF ROADS AND OTHER LOW LYING PLACES.
 
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

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, Sep 10, 2:58 PM EDT, 1 hour 7 minutes before
GAZ002-004-102000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATHENS GA
257 PM EDT MON SEP 10 1990

AT 250PM A HAM RADIO PERSON REPORTED PEA SIZE HAIL IN MONORE GEORGIA
ALONG WITH HEAVY RAIN AND SEVERE CLOUD TO GROUND LIGHTNING.

THESE STORMS HAVE LITTLE MOVEMENT.

OTHER STORMS ARE EXPECTED TO FORM DURING THE AFTERNOON AND EVENING
HOURS OVER NORTHEAST GEORGIA.

PERSONS SHOULD REMAIN ALERT FOR THE STORMS AND SEEK SHELTER
AS THEY FORM.
Special weather statement, Sep 10, 3:28 PM EDT, 37 minutes before
GAZ001-3 102100

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTA  GA
327 PM EDT MON SEP 10 1990

...THUNDERSTORMS OVER NORTHWEST GEORGIA...

AT 325 PM WEATHER SERVICE RADAR INDICATED THUNDERSTORMS DEVELOPING
RAPIDLY OVER NORTHWEST GEORGIA. THE STRONGEST STORMS WERE IN GORDON
COUNTY JUST NORTHWEST OF CALHOUN AND IN CARROLL COUNTY SOUTH OF
VILLA RICA. LITTLE OR NO MOVEMENT WAS INDICATED.

THESE STORMS MAY BE ACCOMPANIED BY FREQUENT LIGHTNING...HIGH WINDS ...
SMALL HAIL AND HEAVY RAIN. BECAUSE THESE STORMS ARE SLOW-MOVERS FLOODING
OF STREETS AND LOW LYING AREAS ARE ALSO POSSIBLE.

THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER NORTHWEST GEORGIA FOR THE
NEXT SEVERAL HOURS. RESIDENTS ARE URGED TO STAY TUNED TO NOAA WEATHER
RADIO OR YOUR LOCAL RADIO AND TV STATIONS FOR FURTHER UPDATES OR
POSSIBLE WARNINGS.
Special weather statement, Sep 10, 3:31 PM EDT, 34 minutes before
GAZ008-102030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBUS GA
331 PM EDT MON SEP 10 1990

AT 330 PM EDT COLUMBUS WEATHER RADAR WAS SHOWING SEVERAL STRONG
THUNDERSTORMS IN LEE AND DOUGHERTY COUNTIES IN SOUTHWEST GEORGIA
FROM JUST SOUTH OF LEESBURG TO JUST WEST OF ALBANY. LITTLE
MOVEMENT WAS NOTED.

PERSONS ACROSS LEE..DOUGHERTY..MITCHELL AND WORTH COUNTIES CAN EXPECT
VERY HEAVY RAIN..DANGEROUS LIGHTNING AND GUSTY WINDS FOR THE NEXT
COUPLE OF HOURS.

LISTEN TO NOAA WEATHER RADIO FOR LATER STATEMENTS OF POSSIBLE
WARNINGS.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 3:16 PM EDTSevere Thunderstorm WarningFFCHamilton44 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.