Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 176, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 16, 1986, 10:37 PM CDT for Clay County, Lincoln County, Turner County, South Dakota. It was in force for 68 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 16, 1986, 10:37 PM CDT (03:37 UTC)
- Expired
- Aug 16, 1986, 11:45 PM CDT
- In force
- 68 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Clay County, SD, Lincoln County, SD, Turner County, SD
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 16, 10:46 PM CDT | Thunderstorm Wind 65 | Turner, SD | |
| Aug 16, 11:27 PM CDT | Thunderstorm Wind 61 | Clay, SD |
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
Omaha, NE (KOAX), launched 00:00Z, 3.6 hours before the alert went out and 211 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3605 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 48 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 KFSD 170337 SVRFSD SDC083-027-125-135-170445- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1037 PM CDT SAT AUG 16 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1145 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHEAST SOUTH DAKOTA...SOUTHERN LINCOLN...CLAY...SOUTHERN TURNER AND YANKTON THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER. SOME OF THE CITIES INCLUDED IN THIS WARNING ARE YANKTON.. CENTERVILLE..HUDSON..VERMILLION..BERESFORD. AT 1030 PM CDT RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM 5 MILES WEST OF SIOUX FALLS TO PARKER TO YANKTON SOUTH DAKOTA. MOVEMENT WAS SOUTHEAST AT 25 MPH. A FUNNEL CLOUD WAS REPORTED NEAR HURLEY SOUTH DAKOTA OR ABOUT 25 MILES SOUTHWEST OF SIOUX FALLS SOUTH DAKOTA. 50 MPH WINDS WERE REPORTED NEAR WALL LAKE OR ABOUT 12 MILES WEST OF SIOUX FALLS. IF YOU ARE IN THE PATH OF THIS STORM..YOU SHOULD GET TO A REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES DAMAGING WINDS IN EXCESS OF 60 MPH..HAIL 3/4 INCH OR LARGER..DEADLY LIGHTNING..AND HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA. THESE STORM%S CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT. ANDERSON
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, Aug 16, 9:03 PM CDT, 1 hour 34 minutes before
STORM REPORT NATIONAL WEATHER SERVICE SIOUX FALLS SD 900PAM CDT SAT AUG 16 1986 TIME EVENT AND LOCATION 850 PM CDT 51 MPH WIND GUST AT CHAMBERLAIN SD IN BRULE COUNTY. KAPELA
Special weather statement, Aug 16, 9:49 PM CDT, 48 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 948 PM CDT SAT AUG 16 1986 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EAST CENTRAL AND SOUTHEAST SOUTH DAKOTA UNTIL 11PM CDT TONIGHT... AT 945 PM... THERE WERE NUMEROUS INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN IN EAST CENTRAL AND SOUTHEAST SOUTH DAKOTA. THE STRONGEST THUNDERSTORMS WERE 30 MILES NORTHWEST OF MITCHELL NEAR PLANKINTON AND 35 MILES NORTHWEST OF SIOUX FALLS NEAR WINFRED. HAIL AND STRONG GUSTY WINDS WERE IN THESE STORMS. MOVEMENT WAS EAST AT 12 MILES AN HOUR. BE ALERT FOR SEVERE THUNDERSTORMS AND TAKE IMMEDIATE COVER. PRESTON
Local storm report, Aug 16, 10:16 PM CDT, 21 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1010 PM CDT SAT AUG 16 1986
TIME EVENT AND LOCATION
945-950 PM CDT 55 MPH WIND GUST AT CANISTOTA SD IN MCKOOK COUNTY
70 MPH WIND GUST AT SALEM SD IN MCKOOK COUNTY
MARBLE SIZE HAIL 6 MILES OF SALEM IN MCKOOK COUNTY
60 MPH WIND GUST AT MT VERNON SD IN DAVISON COUNTY
BUSSLocal storm report, Aug 16, 10:24 PM CDT, 13 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1025 PM CDT SAT AUG 16 1986
TIME EVENT AND LOCATION
1015 PM CDT 40 MPH WIND GUST AT HUMBODLT SD IN MINNEHAHA COUNTY
LOST ELECTRICITY DUE TO FREQUENT LIGHTNING STRIKES
AT HUMBODLT SD IN MINNEHAHA COUNTY
BUSSLocal storm report, Aug 16, 10:29 PM CDT, 8 minutes before
KFSD 170329
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1030 PM CDT SAT AUG 16 1986
TIME EVENT AND LOCATION
1008 PM CDT FUNNEL CLOUD REPORTED BY CIVIL DEFENSE PERSONS JUST
NORTH AND SOUTH OF PARKER SD IN TURNER COUNTY NO
TOUCHDOWN.
BUSSLocal storm report, Aug 16, 10:34 PM CDT, 3 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1030 PM CDT SAT AUG 16 1986
TIME EVENT AND LOCATION
1008 PM CDT FUNNEL CLOUDY REPORTED BY CIVIL DEFENSE PERSONS JUST
! NORTH AND SOUTH OF PARKER SD IN TURNER COUNTY..NO
TOUCHDOWN.
BUSSThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 9:10 PM CDT | Tornado Warning | FSD | Aurora, Brule | 35 min |
| Aug 16, 9:16 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, McCook | 59 min |
| Aug 16, 9:16 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule | 59 min |
| Aug 16, 9:16 PM CDT | Severe Thunderstorm Warning | FSD | Davison | 59 min |
| Aug 16, 10:05 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Minnehaha | 55 min |
| Aug 16, 10:05 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 55 min |
| Aug 16, 10:17 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Douglas, Hutchinson | 58 min |
| Aug 16, 10:17 PM CDT | Severe Thunderstorm Warning | FSD | Hanson | 58 min |
| Aug 16, 10:37 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 68 min |
| Aug 16, 11:06 PM CDT | Severe Thunderstorm Warning | FSD | Union | 54 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.