Alert archive / Tennessee / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 255, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 5, 1990, 4:29 PM EDT for Bradley County, Hamilton County, Tennessee. It was in force for 46 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 5, 1990, 4:29 PM EDT (20:29 UTC)
- Expired
- Aug 5, 1990, 5:15 PM EDT
- In force
- 46 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
Counties Bradley County, TN, 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 |
|---|---|---|---|
| Aug 5, 4:40 PM EDT | Thunderstorm Wind 0 | Hamilton, TN | |
| Aug 5, 4:45 PM EDT | Hail 1.75 | Bradley, 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, 8.5 hours before the alert went out and 179 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
- 58 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 906 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHA 052031 SVRCHA TNC011-065-052115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHATTANOOGA TENNESSEE 429 PM EDT SUN AUG 5 1990 THE NATIONAL WEATHER SERVICE IN CHATTANOOGA TENNESSEE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS IN SOUTHEAST TENNESSEE ...BRADLEY COUNTY...EASTERN HAMILTON COUNTY AT 425PM EDT WEATHER RADAR INDICATED A LARGE SEVERE THUNDERSTORM OVER PARTS OF EASTERN HAMILTON COUNTY OR CENTERED JUST TO THE NORTH OF OOLTEWAH. THE THUNDERSTORM WAS MOVING TOWARD THE EAST NORTHEAST AT 15 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 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 5, 1:40 PM EDT, 2 hours 49 minutes before
GAZ002-004-052000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATHENS GA 240 PM EDT SUN AUG 5 1990 AFTERNOON HEAT COMBINED WITH CONSIDERABLE MOISTURE WILL PRODUCE THUNDERSTROMS AT RANDOM ACROSS NORTHEAST GEORGIA THIS AFTERNOON. PEOPLE ACROSS NORTHEAST GEORGIA SHOULD REMAIN ALERT FOR THESE THUNDERSTORMS WHICH WILL BE CAPABLE OF PRODUCING STRONG GUSTY SURFACE WINDS...BRIEF HEAVY RAIN...FREQUENT CLOUD TO GROUND LIGHTNING...POSSIBLE SMALL HAIL AND FLOODING OF LOW LYING AREAS AND ROADWAYS. FOR THOSE BOATING AND PARTICIPATING IN OTHER WATER ACTIVITIES BE ESPECIALLY WATCHFUL FOR THUNDERSTORMS APPROACHING YOUR AREA AND ALLOW ADEQUATE TIME TO REACH A PLACE OF SAFETY OUT AND OFF THE WATER.
Special weather statement, Aug 5, 1:41 PM EDT, 2 hours 48 minutes before
GAZ002-004-052000- SPECIAL WEATHER STATEMENT . . . CORRECTION FOR TIME . . . NATIONAL WEATHER SERVICE ATHENS GA 140 PM EDT SUN AUG 5 1990 AFTERNOON HEAT COMBINED WITH CONSIDERABLE MOISTURE WILL PRODUCE THUNDERSTROMS AT RANDOM ACROSS NORTHEAST GEORGIA THIS AFTERNOON. PEOPLE ACROSS NORTHEAST GEORGIA SHOULD REMAIN ALERT FOR THESE THUNDERSTORMS WHICH WILL BE CAPABLE OF PRODUCING STRONG GUSTY SURFACE WINDS...BRIEF HEAVY RAIN...FREQUENT CLOUD TO GROUND LIGHTNING...POSSIBLE SMALL HAIL AND FLOODING OF LOW LYING AREAS AND ROADWAYS. FOR THOSE BOATING AND PARTICIPATING IN OTHER WATER ACTIVITIES BE ESPECIALLY WATCHFUL FOR THUNDERSTORMS APPROACHING YOUR AREA AND ALLOW ADEQUATE TIME TO REACH A PLACE OF SAFETY OUT AND OFF THE WATER.
Special weather statement, Aug 5, 1:47 PM EDT, 2 hours 42 minutes before
GAZ001-003-052100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATLANTA GA 145 PM EDT SUN AUG 05 1990 AT 140 PM WEATHER SERVICE RADAR INDICATED THUNDERSTORMS DEVELOPING RAPIDLY OVR NORTHWEST GEORGIA. THE STRONGEST STORM WAS INDICATED JUST NORTHWEST OF CAROLLTON. THESE STORMS WERE MOVING EAST AT ABOUT 10 MPH. THE STORMS MAY BE ACCOMPANIED BY GUSTY WINDS...DANGEROUS CLOUD TO GROUND LIGHTNING... HEAVY RAIN AND SMALL HAIL. PERSONS IN NORTHWEST GEORGIA ARE URGED TO STAY TUNED TO NOAA WEATHER RADIO OR LOCAL RADIO AND TV STATIONS FOR FURTHER UPDATES AND POSSIBLE WARNINGS.
Special weather statement, Aug 5, 3:06 PM EDT, 1 hour 23 minutes before
GAZ001-003-052100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATLANTA GA 305 PM EDT SUN AUG 05 1990 ...THUNDERSTORMS CONTINUING TO DEVELOP OVER NORTHWEST GEORGIA... THUNDERSTORMS CONTINUED TO DEVELOP ACROSS NORTH GEORGIA IN THE AFTERNOON HEAT. AT 300 PM WEATHER SERVICE RADAR INDICATED THE STRONGEST STORMS JUST NORTH OF CAROLLTON AND NEAR MENLO IN CHATTOGA COUNTY. THESE STORMS WERE MOVING EAST AT ABOUT 10 MPH. THESE STORMS MAY BE ACCOMPANIED BY GUSTY WINDS...DANGEROUS CLOUD TO GROUND LIGHTNING...HEAVY RAIN AND SMALL HAIL. BECAUSE THESE STORMS ARE SLOW-MOVERS FLOODING OF LOW LYING AREAS AND ROADWAYS ARE POSSIBLE. THUNDERSTORMS WILL CONTINE TO DEVELOP AND MOVE ACROSS NORTH GE,ORGIA FOR THE NEXT SEVERAL HOURS. RESIDENTS ARE URGED TO STAY TUNED TO NOAA WEATHER RADIO OR LOCAL RADIO AND TV STATIONS FOR FURTHER UPDATES AND POSSIBLE WARNINGS.
Special weather statement, Aug 5, 3:31 PM EDT, 58 minutes before
GAZ006-008-009-052100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MACON GA 332 PM EDT SUN AUG 5 1990 ...RAPIDLY DEVELOPING THUNDERSTORMS WERE ACROSS CENTRAL GEORGIA... AT 330 PM WEATHER RADAR IN MACON SHOWED THUNDERSTORMS HAD DEVELOPED IN MANY COUNTIES OF CENTRAL GEORGIA. MOVEMENT WAS SOUTHEAST BETWEEN 5 AND 10 MPH. THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS AFTERNOON AND EVENING ACROSS CENTRAL GEORGIA. THEY WILL PRODUCE DANGEROUS LIGHTNING STRIKES... STRONG GUSTY WINDS...AND HEAVY RAIN. FEW MAY PRODUCE SMALL HAIL. PEOPLE ENJOYING OUTDOOR ACTIVITIES SHOULD GO INSIDE IF THUNDERSTORMS APPROACH. BOATERS ON AREA LAKES...GOLFERS...AND OTHERS IN OPEN AREAS SHOULD ALSO REMEMBER LINGHTNING SAFETY RULES.
Special weather statement, Aug 5, 3:55 PM EDT, 34 minutes before
GAZ002-004-052200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATHENS GA 400 PM EDT SUN AUG 5 1990 AFTERNOON HEAT COMBINED WITH CONSIDERABLE MOISTURE WILL PRODUCE THUNDERSTORMS AT RANDOM ACROSS NORTHEAST GEORGIA THIS AFTERNOON. PEOPLE ACROSS NORTHEAST GEORGIA SHOULD REMAIN ALERT FOR THESE THUNDERSTORMS WHICH WILL BE CAPABLE OF PRODUCING STRONG GUSTY SURFACE WINDS...BRIEF HEAVY RAIN...FREQUENT CLOUD TO GROUND LIGHTNING...POSSIBLE SMALL HAIL AND FLOODING OF LOW LYING AREAS AND ROADWAYS. FOR THOSE BOATING AND PARTICIPATING IN OTHER WATER ACTIVITIES BE ESPECIALLY WATCHFUL FOR THUNDERSTORMS APPROACHING YOUR AREA AND ALLOW ADEQUATE TIME TO REACH A PLACE OF SAFETY OUT AND OFF THE WATE_R.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 5:02 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.