Alert archive / Tennessee / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 312, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 22, 1990, 2:53 PM EDT for McMinn County, Tennessee. It was in force for 52 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
- Aug 22, 1990, 2:53 PM EDT (18:53 UTC)
- Expired
- Aug 22, 1990, 3:45 PM EDT
- In force
- 52 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County McMinn 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 22, 3:15 PM EDT | Thunderstorm Wind 0 | Mcminn, 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, 6.9 hours before the alert went out and 195 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
- 703 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 634 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHA 221854 SVRCHA TNC107-221945- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHATTANOOGA TENNESSEE 253 PM EDT WED AUG 22 1990 THE NATIONAL WEATHER SERVICE IN CHATTANOOGA TENNESSEE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 345 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS IN SOUTHEAST TENNESSEE ...MCMINN COUNTY AT 250 PM EDT THE CHATTANOOGA WEATHER RADAR INDICATED A SEVERE THUNDERSTORM IN WESTERN MCMINN COUNTY...JUST TO THE WEST OF ATHENS. THE STORM IS MOVING SLOWLY TO THE EAST...AND THERE MAY BE SOME FLOODING IN FLOOD PRONE AREAS FROM THE VERY HEAVY RAINFALL. RESIDENTS OF THE ATHENS TENNESSEE AREA SHOULD BE ALERT FOR POSSIBLE ADVERSE WEATHER CONDITIONS AS THIS STORM APPROACHES. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERS1TORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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 22, 10:26 AM EDT, 4 hours 27 minutes before
GAZ006-008-009-211600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MACON GA 1025 AM EDT WED AUG 22 1990 ...THUNDERSTORMS DEVELOPING TO NEAR SEVERE INTENSITY... AT 1020 AM RADAR SHOWED NEWLY DEVELOPED THUNDERSTORMS APPROACHING SEVERE INTENSITY 15 MILES NORTHWEST OF MACON NEAR THE CRAWFORD TO MONROE TO BIBB COUNTY INTERSECTION. THE STORMS WERE MOVING SOUTHEAST 15 MILES AN HOUR AND WILL BE NEAR THE CENTER OF MACON IN AN HOUR. OTHER SHOWERS AND THUNDERSTORMS INCLUDING A FEW WITH VERY HEAVY RAIN AND WIND GUSTS OVER 40 MILES AN HOUR EXTENDED IN A BROAD BAND FROM NORTHEAST OF ALBANY TO HAWKINSVILLE TO NEAR DUBLIN AND TO NEAR HELENA IN TELFAIR COUNTY. THIS LARGE BAND OF RAIN AND THUNDERSTORMS WAS MOVING EAST 10 MILES AN HOUR. BECAUSE IT IS MOVING SLOWLY IT WILL CAUSE MINOR FLOODING OF LOW AREAS AS THE STORM SYSTEM PASSES. STAY ALERT TO THIS STORM SYSTEM AS THE STORMS COULD INTENSIFY QUICKLY.
Local storm report, Aug 22, 12:11 PM EDT, 2 hours 42 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ATLANTA, GA
1205 PM WED AUG 22 1990
...DELAYED REPORTS...
COUNTY...... HEARD COUNTY
LOCATION.... SOUTHWEST PORTION OF HEARD COUNTY ON HIGHWAY 219
SOURCE...... EMA
TIME........ 718-734 PM EDT 8/21/90
TYPE STORM.. SEVERE THUNDERSTORM
DAMAGE...... TREES AND POWERLINES DOWN AND ACROSS ROAD.
HAIL........ NONE REPORTED
INJURIES.... NONE REPORTED.
COSTS....... UNKNOWN
COUNTY...... TROUP COUNTY
LOCATION.... LA GRANGE
SOURCE...... POLICE DEPT.
TIME........ ABOUT 8 PM
TYPE STORM.. SEVERE THUNDERSTORM
DAMAGE...... TREES FELL ON TWO HOUSES.
HAIL........ NONE REPORTED.
INJURIES.... NONE REPORTED.
COSTS....... UNKNOWN
COUNTY...... FLOYD COUNTY
LOCATION.... CAVE SPRING
SOURCE...... POLICE DEPT.
TIME........ ABOUT 6 PM
TYPE STORM.. SEVERE THUNDERSTORM
DAMAGE...... MANY TREES DOWN ALL OVER TOWN. POWER WAS OUT ALL NIGHT
LONG AND RESTORED ABOUT 8 30 AM.
HAIL........ NONE REPORTED.
INJURIES.... NONE REPORTED.
COSTS....... UNKNOWN
COUNTY...... POLK COUNTY
LOCATION.... NORTH OF CEDARTOWN AND ALSO ESOM HILL AREA
SOURCE...... SHERIFF
TIME........ 545 - 600 PM
TYPE STORM.. SEVERE THUNDERSTORM
DAMAGE...... TREES AND POWER LINES DOWN ON ROADS.
HAIL........ NONE REPORTED.
INJURIES.... NONE REPORTED.
COSTS....... UNKNOWNSpecial weather statement, Aug 22, 12:35 PM EDT, 2 hours 18 minutes before
GAZ006-008-009-211900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MACON GA 1235 PM EDT WED AUG 22 1990 AT 1230 PM RADAR SHOWED NUMEROUS SHOWERS AND SEVERAL THUNDERSTORMS MOVING THROUGH CENTRAL GEORGIA FROM COLUMBUS TO ROBERTA IN CRAWFORD COUNTY THROUGH THE BIBB TO TWIGGS TO WILKINSON COUNTIES AREA AND ON EAST TO AUGUSTA. ANOTHER LARGE AREA OF RAIN AND THUNDERSTORMS COVERED MUCH OF SOUTH CENTRAL AND SOUTHEAST GEORGIA FROM OGLETHORPE IN MACON COUNTY TO DUBLIN TO SYLVANIA AND SOUTH TO SAVANNAH TO ALMA AND BACK TO NEAR ALBANY. THE STORMS WITH THE HEAVIEST RAIN WERE 15 MILES WEST OF ROBERTA IN CRAWFORD COUNTY AND 10 MILES NORTH OF FITZGERALD IN BEN HILL COUNTY. NEARLY ALL THE STORMS WERE MOVING NORTHEAST AT 10 MILES AN HOUR AND WILL PRODUCE VERY HEAVY RAIN WITH POSSIBLE FLOODING OF LOW AREAS AND SOME STREET FLOODING.
Special weather statement, Aug 22, 1:06 PM EDT, 1 hour 47 minutes before
GAZ005-ALZ012 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBUS GA 105 PM EDT WED AUG 22 1990 ...THUNDERSTORMS DEVELOPING IN WEST GEORGIA AND EAST ALABAMA... AT 100 PM EDT COLUMBUS WEATHER RADAR INDICATED AN AREA OF NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS EXTENDING FROM NEAR WARM SPRINGS GEORGIA SOUTHWEST TO PHENIX CITY...AUBURN AND TUSKEGEE ALABAMA. MOVEMENT WAS EAST ABOUT 12 MPH. RESIDENTS THROUGHOUT WEST CENTRAL GEORGIA AND EAST CENTRAL ALABAMA... INCLUDING THE COLUMBUS METROPOLITAN AREA...SHOULD BE ON THE ALERT FOR THE NEXT FEW HOURS FOR THREATENING WEATHER. THE LARGER STORMS WILL LIKELY CONTAIN STRONG GUSTY WINDS...VERY HEAVY RAINFALL...DANGEROUS LIGHTNING AND POSSIBLE SMALL HAIL.
Special weather statement, Aug 22, 1:19 PM EDT, 1 hour 34 minutes before
GAZ005-ALZ012-221930- SPECIAL WEATHER STATEMENT...CORRECTION FOR HEADING ONLY. NATIONAL WEATHER SERVICE COLUMBUS GA 105 PM EDT WED AUG 22 1990 ...THUNDERSTORMS DEVELOPING IN WEST GEORGIA AND EAST ALABAMA... AT 100 PM EDT COLUMBUS WEATHER RADAR INDICATED AN AREA OF NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS EXTENDING FROM NEAR WARM SPRINGS GEORGIA SOUTHWEST TO PHENIX CITY...AUBURN AND TUSKEGEE ALABAMA. MOVEMENT WAS EAST ABOUT 12 MPH. RESIDENTS THROUGHOUT WEST CENTRAL GEORGIA AND EAST CENTRAL ALABAMA... INCLUDING THE COLUMBUS METROPOLITAN AREA...SHOULD BE ON THE ALERT FOR THE NEXT FEW HOURS FOR THREATENING WEATHER. THE LARGER STORMS WILL LIKELY CONTAIN STRONG GUSTY WINDS...VERY HEAVY RAINFALL...DANGEROUS LIGHTNING AND POSSIBLE SMALL HAIL.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 3:42 PM EDT | Severe Thunderstorm Warning | FFC | Bradley | 48 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.