Alert archive / Tennessee / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 140, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at May 1, 1990, 4:19 PM EDT for Hamilton County, Tennessee. It was in force for 41 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
- May 1, 1990, 4:19 PM EDT (20:19 UTC)
- Expired
- May 1, 1990, 5:00 PM EDT
- In force
- 41 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Hamilton 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 |
|---|---|---|---|
| May 1, 4:30 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, 8.3 hours before the alert went out and 167 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
- 728 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 618 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHA 012024 SVRCHA TNC065-107-012100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHATTANOOGA TENNESSEE 419 PM EDT TUE MAY 1 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 ...HAMILTON COUNTY...MCMINN COUNTY AT 415PM EDT WEATHER RADAR INDICATED A SHORT LINE OF SEVERE THUNDERSTORMS MOVING INTO THE WESTERN SECTIONS OF HAMILTON COUNTY OF SOUTHEAST TENNESSE. AT 415PM EDT WEATHER RADAR INDICATED A SEVERE THUNDERSTORM MOVING INTO WESTERN MCMINN COUNTY OF SOUTHEAST TENNESSEE THE THUNDERSTORM WAS MOVING TOWARD THE EAST AT 20 MPH. 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 BU}SINESS. 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
Local storm report, May 1, 2:28 PM EDT, 1 hour 51 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE COLUMBUS GA 225 PM EDT TUE MAY 1 1990 DELAYED ADDITIONAL REPORT...SEVERE THUNDERSTORMS IN CHATTAHOOCHEE..04/28/90 COUNTY..... CHATTAHOOCHEE/053 SOURCE..... PUBLIC REPORT TIME...... 315 TO 400 PM EDT/1915-2000Z TYPE STORM. SEVERE THUNDERSTORM DAMAGE..... SEVERAL TREES BLOWN OVER IN NORTHERN PORTION JUST SOUTH OF FT BENNING WEST OF 280. HAIL....... UNKNOWN COST OF DAMAGE...UNKNOWN DEATHS/INJURIES...N6ONE
Local storm report, May 1, 2:44 PM EDT, 1 hour 35 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE COLUMBUS GA 230 PM EDT TUE MAY 1 1990 DELAYED ADDITIONAL REPORT...SEVERE THUNDERSTORMS IN HARRIS..04/28/90 COUNTY..... HARRIS/145 SOURCE..... WEATHER SERVICE UMPLOYEE TIME...... 300 TO 330 PM EDT/1900-1930Z TYPE STORM. SEVERE THUNDERSTORM WEATHER.... VERY STRONG WIND ESTIMATED OVER 50 MILES AN HOUR WITH MARBLE SIZE HAIL ALONG 185 IN SOUTHERN HARRIS COUNTY. HAIL....... MARBLE SIZE COST OF DAMAGE...UN@KNOWN DEATHS/INJURIES...NONE
Special weather statement, May 1, 2:54 PM EDT, 1 hour 25 minutes before
GAZ001-002-011945- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATLANTA GA 250 PM EDT TUE MAY 1 1990 ...SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR EXTREME NORTH GEORGIA UNTIL 900 PM EDT... AT 245 PM EDT RADAR DID NOT SHOW ANY RAIN OR THUNDERSTORMS IN GEORGIA. HOWEVER RADAR DID SHOW A LINE OF THUNDERSTORMS IN EAST TENNESSEE AND NORTH ALABAMA GENERALLY FROM JUST NORTH OF KNOXVILLE TENNESSEE TO NEAR HUNTSVILLE ALABAMA. THE THUNDERSTORMS IN THIS LINE ARE MOVING EAST AT ABOUT 35 MILES AN HOUR. THIS LINE OF THUNDERSTORMS WILL LIKELY MOVE INTO EXTREME NORTHWEST GEORGIA LATER THIS AFTERNOON. PEOPLE IN EXTREME NORTH GEORGIA SHOULD STAY UPDATED ON THE LATEST WEATHER INFORMATIONJ THROUGH THE AFTERNOON AND EVENING HOURS.
Local storm report, May 1, 3:01 PM EDT, 1 hour 18 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE COLUMBUS GA 250 PM EDT TUE MAY 1 1990 DELAYED ADDITIONAL REPORT...SEVERE THUNDERSTORMS IN MARION..04/28/90 COUNTY..... MARION/197 SOURCE..... PUBLIC REPORT TIUME...... 410 TO 430 PM EDT/2010-2030Z TYPE STORM. SEVERE THUNDERSTORM WEATHER.... NUMEROUS TREES DOWN ALONG HIGHWAY SR26 SOUTHEAST OF BUENA VISTA. HAIL....... UNKNOWN COST OF DAMAGE...UNKNOWN DEATHS/INJURIES...NONE
Local storm report, May 1, 3:29 PM EDT, 50 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE COLUMBUS GA 330 PM EDT TUE MAY 1 1990 DELAYED ADDITIONAL REPORT...SEVERE THUNDERSTORMS IN TAYLOR..04/28/90 COUNTY..... TAYLOR/269 SOURCE..... PUBLIC REPORT JOHN COOK NEAR REYNOLDS. TIME...... 430 TO 500 PM EDT/2030-2100Z TYPE STORM. SEVERE THUNDERSTORM DAMAGE...A FEW TREES DOWN ALONG HIGHWAY SR128 JUST SOUTH OF REYNOLDS. A FEW POWER INTERRUPTIONS. HAIL....... UNKNOWN COST OF DAMAGE...UNKNOWN DEATH4S/INJURIES...NONE
Special weather statement, May 1, 4:06 PM EDT, 13 minutes before
GAZ001-002-012100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATLANTA GA 405 PM EDT TUE MAY 1 1990 ...SEVERE THUNDERSTORM WATCH 184 CONTINUES IN EFFECT FOR EXTREME NORTH GEORGIA UNTIL 900 PM EDT... AT 400 PM EDT RADAR INDICATED A LINE OF VERY STRONG THUNDERSTORMS FROM KNOXVILLE TENNESSEE TO JUST NORTHWEST OF CHATTANOOGA TO GUNTERSVILLE ALABAMA. THIS LINE IS MOVING SOUTHEAST AT ABOUT 20 MILES AN HOUR WITH INDIVIDUAL STORMS MOVING EAST AT 35 MILES AN HOUR. SOME OF THE STRONGEST THUNDERSTORMS WERE LOCATED ABOUT 20 MILES WEST OF FORT PAYNE ALABAMA AND JUST WEST OF CHATTANOOGA. THESE THUNDERSTORMS COULD EFFECT PARTS OF NORTHWEST GEORGIA WITHIN THE NEXT HOUR. HAIL AND WIND DAMAGE HAS SBEEN REPORTED IN NORTH ALABAMA WITH THESE STORMS. PEOPLE IN NORTHWEST GEORGIA SHOULD STAY TUNED TO THE LASTEST WEATHER INFORMATION AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 3:07 PM EDT | Severe Thunderstorm Warning | FFC | Bledsoe, Rhea | 53 min |
| May 1, 4:07 PM EDT | Severe Thunderstorm Warning | FFC | Marion | 53 min |
| May 1, 4:19 PM EDT | Severe Thunderstorm Warning | FFC | McMinn | 41 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.