Alert archive / South Dakota / Tornado Warnings in 1986
Tornado Warning 8, NWS Aberdeen, SD
NWS Aberdeen, SD issued this tornado warning at Jun 21, 1986, 7:37 PM CDT for Miner County, South Dakota. It was in force for 38 min.
The area
The counties it named.
The facts
- Issued
- Jun 21, 1986, 7:37 PM CDT (00:37 UTC)
- Expired
- Jun 21, 1986, 8:15 PM CDT
- In force
- 38 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
County Miner County, SD
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
Aberdeen, SD (KHON), launched 00:00Z, 0.6 hours before the alert went out and 116 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
- 3109 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1356 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 136 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 4.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHON 220037 TORHON SDC097-220115- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE HURON SD 737 PM CDT SAT JUN 21 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF EAST CENTRAL SOUTH DAKOTA...EASTERN MINER SOME OF THE CITIES INCLUDED IN THE WARNING AREA ARE CANOVA... WINFRED...AND HOWARD. AT 730 PM CDT RADAR INDICATED A POSSIBLE TORNADO JUST NORTH OF CANOVA..OR 50 MILES SOUTHEAST OF HURON..MOVING EAST AT 15 MILES AN HOUR. AT 730 PM CDT A FUNNEL CLOUD WAS REPORTED NEAR CANOVA. IF YOU ARE IN THE PATH OF THIS TORNADO...YOU SHOULD GO TO A BASEMENT SHELTER IF AVAILABLE. OTHERWISE GO TO A CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. CARS AND MOBILE HOMES SHOULD BE ABANDONED FOR A REINFORCED BUILDING. MORRIS/SPRINGER
What forecasters said that day
The local office's own words before this tornado 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, Jun 21, 4:53 PM CDT, 2 hours 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 450 PM CDT SAT JUN 21 1986 ...A TORNADO WATCH IS IN EFFECT UNTIL 1000 PM CDT FOR PARTS OF EASTERN SOUTH DAKOTA... AT 445 PM CDT RADAR INDICATED AN AREA OF THUNDERSTORMS IN CLARK AND CODINGTON COUNTIES IN EASTERN SOUTH DAKOTA. THESE STORMS WERE MOVING NORTHEAST AT 15 MPH AND MAY MOVE ACROSS SOUTHERN ROBERTS AND SOUTHERN DAY COUNTIES WITHIN THE NEXT HOUR. INDIVIDUALS IN THE PATH OF THIS AREA OF THUNDERSTORMS SHOULD BE ALERT FOR HEAVY RAIN..SMALL HAIL..GUSTY SURFACE WINDS AND DANGEROUS LIGHTNING. THESE STORMS MAY BECOME SEVERE WITH LITTLE NOTICE. BE ON THE ALERT FOR SEVERE WEATHER AND TAKE SHELTER IMMEDIATELY. HUSTO#N
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 12:14 AM CDT | Severe Thunderstorm Warning | ABR | Miner | 61 min |
| Jun 22, 12:29 AM CDT | Severe Thunderstorm Warning | ABR | Hamlin, Kingsbury | 61 min |
| Jun 22, 12:29 AM CDT | Severe Thunderstorm Warning | ABR | Deuel | 61 min |
Nearby
Tornado Warnings in South Dakota, 1986Every tornado warning in 1986Tornadoes 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.