Alert archive / Tennessee / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 91, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 10, 1986, 8:12 PM CDT for Grundy County, Marion County, Tennessee. It was in force for 48 min.
The area
The counties it named.
The facts
- Issued
- Aug 10, 1986, 8:12 PM CDT (01:12 UTC)
- Expired
- Aug 10, 1986, 9:00 PM CDT
- In force
- 48 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
Counties Grundy County, TN, Marion County, TN
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 1.2 hours before the alert went out and 128 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
- 1408 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 683 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHA 110112 SVRCHA TNC061-115-110200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHATTANOOGA TN 912 PM EDT SUN AUG 10 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHEAST TENNESSEE...SOUTHERN GRUNDY AND NORTHERN MARION AT 908 PM EDT RADAR INDICATED A SEVERE THUNDERSTORMS OVER SOUTHERN GRUNDY COUNTY OF SOUTHEAST TENNESSEE. THE THUNDERSTORMS WAS MOVING TO THE EAST AT 30 MILES AND HOUR AND WILL MOVE INTO NORTHERN MARION COUNTY OF SOUTHEAST TENNESSEE DURING THE NEXT 15 MINUTES. THIS IS A LARGE AND DANGEROUS STORM, PERSONS IN THE PATH OF THE STORM SHOULD TAKE SHELTER IMMEADIATELY. STAY TUNED TO THIS STATION FOR MORE INFORMATION
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 10, 5:13 PM CDT, 2 hours 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATHENS GA 612 PM EDT SUN AUG 10 1986 ...VERY STRONG THUNDERSTORMS OVER PARTS OF NORTHEAST GEORGIA... A CLUSTER OF VERY STRONG THUNDERSTORMS WERE OCCURRING IN JASPER COUNTY AND WERE BEGINNING TO MOVE INTO MORGAN COUNTY OF NORTHEAST GEORGIA. THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 22 MILES AN HOUR. PERSONS IN MORGAN COUNTY OF NORTHEAST GEORGIA CAN EXPECT BRIEF HEAVY DOWNPOURS...GUSTY W INDS...DANGEROUS LIGHTNING AND POSSIBLE SMALL HAIL AS THESE THUNDERSTORMS MOVE THROUGH. MONITOR NOAA WEATHER RADIO FOR FURTHER STATEMENTS OR WARNINGS.
Special weather statement, Aug 10, 5:38 PM CDT, 2 hours 34 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATHENS GA 635 PM EDT SUN AUG 10 1986 VERY STRONG THUNDERSTORMS WERE OCCURING IN NORTHCENTRAL AND NORTHEAST GEORGIA. THESE THUNDERSTORMS WERE IN A CLUSTER THAT COVERED PARTS OF MORGAN...NEWTON...JASPER AND PUTNAM COUNTIES. THE STRONGEST THUNDERSTORM WAS IN SOUTHERN MORGAN COUNTY...ABOUT 7 MILES SOUTHWEST OF MADISON. MOVEMENT WAS NORTHEAST AT 22 MILES AN HOUR. ELSEWHERE...SCATTERED THUNDERSTORMS WERE NOTED OVER NORTHWEST GEORGIA EXTENDING INTO EAST TENNESSEE. MOVEMENT WAS TO THE NORTHEAST AT 22 MILES AN HOUR. PERSONS IN NORTHEAST GEORGIA IN THE PATH OF THESE STORMS CAN EXPECT STRONG GUSTY WINDS BRIEF HE%AVY RAIN 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 10, 8:04 PM CDT | Severe Thunderstorm Warning | FFC | Meigs, Rhea | 56 min |
| Aug 10, 8:44 PM CDT | Severe Thunderstorm Warning | FFC | Rhea | 36 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1986Every severe thunderstorm warning in 1986
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.