Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 2, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 26, 1986, 3:39 PM CST for Bon Homme County, Charles Mix County, South Dakota. It was in force for 66 min. 3 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
- Apr 26, 1986, 3:39 PM CST (21:39 UTC)
- Expired
- Apr 26, 1986, 4:45 PM CST
- In force
- 66 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Bon Homme County, SD, Charles Mix 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 |
|---|---|---|---|
| Apr 26, 3:40 PM CST | Hail 2.75 | Charles Mix, SD | |
| Apr 26, 4:00 PM CST | Hail 2.75 | Bon Homme, SD | |
| Apr 26, 4:20 PM CST | Hail 2.75 | Bon Homme, 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
Aberdeen, SD (KHON), launched 12:00Z, 9.7 hours before the alert went out and 201 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
- 5 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 486 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 158 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 262139 SVRFSD SDC009-023-262245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 339 PM CST SAT APR 26 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 445 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHEAST SOUTH DAKOTA...BON-HOMME AND SOUTHERN CHARLES-MIX THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER. SOME OF THE CITIES INCLUDED IN SOUTHEAST SOUTH DAKOTA ARE PICKSTOWN ..AVON..TYNDAL. AT 330 PM CST RADAR INDICATED A SEVERE THUNDERSTORM ON THE MISSOURI RIVER JUST SOUTH OF PISCKSTOWN SOUTH DAKOTA AND ON THE MISSOURI RIVER 30 MILES WEST OF YANKTON. THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 35 MPH. 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 RAINN THAT CAN QUICKLY FLOOD A LOW LYING AREA. THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT.
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, Apr 26, 10:44 AM CST, 4 hours 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1040 AM CST SAT APR 26 1986 ...WINTER STORM WATCH TONIGHT AND SUNDAY FOR THE WESTERN THIRD SOUTH DAKOTA... ...WEATHER ADVISORY FOR LIVESTOCK THIS AFTERNOON WESTERN THIRD SOUTH DAKOTA... ...WEATHER ADVISORY FOR LIVESTOCK THIS AFTERNOON THROUGH SUNDAY FOR CENTRAL THROUGH NORTHEAST SOUTH DAKOTA... SOUTH DAKOTA WILL FEEL THE BRUNT OF YET ANOTHER WINTER/LIKE STORM SYSTEM THIS WEEKEND. COLD RAIN OR WET SNOW WILL CHANGE TO ALL SNOW BY TONIGHT OVER THE WESTERN THIRD OF THE STATE AND CONTINUE INTO SUNDAY. HEAVY SNOW IS POSSIBLE TONIGHT AND SUNDAY OVER THIS AREA ALONG WITH BLOWING AND DRIFTING SNOW. NORTH WINDS WILL EVENTUALLY GUST TO OVER 40 MPH OVER WESTERN SOUTH DAKOTA BY SUNDAY. CONSEQUENTLY...A WINTER STORM WATCH HAS BEEN POSTED FOR THE WESTERN THIRD OF THE STATE FOR TONIGHT AND SUNDAY. PERIODS OF COLD RAIN ALONG WITH THUNDERSTORMS WILL AFFECT THE CENTRAL THROUGH NORTHEASTERN PARTS OF SOUTH DAKOTA. TEMPERATURES WILL BE IN THE MID 30S TO MID 40S OVER THIS AREA THIS AFTERNOON THROUGH SUNDAY ALONG WITH NORTHEAST TO NORTH WINDS INCREASING TO 15 TO 30 MPH. THE COLD RAIN WILL BECOME MIXED HWITH OR CHANGE TO WET SNOW OVER THE CENTRAL PART OF THE STATE TONIGHT AND SUNDAY. THEREFORE...A WEATHER ADVISORY FOR LIVESTOCK IS IN EFFECT THIS AFTERNOON THROUGH SUNDAY FOR CENTRAL THROUGH NORTHEAST SOUTH DAKOTA. BEHREND
Special weather statement, Apr 26, 1:24 PM CST, 2 hours 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 130 PM CST SAT APR 26 1986 ...WINTER STORM WATCH TONIGHT AND SUNDAY FOR THE WESTERN THIRD SOUTH DAKOTA... ...WEATHER ADVISORY FOR LIVESTOCK THIS AFTERNOON WESTERN THIRD SOUTH DAKOTA... ...WEATHER ADVISORY FOR LIVESTOCK THIS AFTERNOON THROUGH SUNDAY FOR CENTRAL THROUGH NORTHEAST SOUTH DAKOTA... SOUTH DAKOTA WILL FEEL THE BRUNT OF YET ANOTHER WINTER/LIKE STORM SYSTEM THIS WEEKEND. COLD RAIN OR WET SNOW WILL CHANGE TO ALL SNOW BY TONIGHT OVER THE WESTERN THIRD OF THE STATE AND CONTINUE INTO SUNDAY. HEAVY SNOW IS POSSIBLE TONIGHT AND SUNDAY OVER THIS AREA ALONG WITH BLOWING AND DRIFTING SNOW. NORTH WINDS WILL EVENTUALLY GUST TO OVER 40 MPH OVER WESTERN SOUTH DAKOTA BY SUNDAY. CONSEQUENTLY...A WINTER STORM WATCH HAS BEEN POSTED FOR THE WESTERN THIRD OF THE STATE FOR TONIGHT AND SUNDAY. PERIODS OF COLD RAIN ALONG WITH THUNDERSTORMS WILL AFFECT THE CENTRAL THROUGH NORTHEASTERN PARTS OF SOUTH DAKOTA. TEMPERATURES WILL BE IN THE MID 30S TO MID 40S OVER THIS AREA THIS AFTERNOON THROUGH SUNDAY ALONG WITH NORTHEAST TO NORTH WINDS INCREASING TO 15 TO 30 MPH. THE COLD RAIN WILL BECOME MIXED WITH OR CHANGE TO WET SNOW OVER THE CENTRAL PART OF THE STATE TONIGHT AND SUNDAY. THEREFORE...A WEATHER ADVISORY FOR LIVESTOCK IS IN EFFECT THIS AFTERNOON THROUGH SUNDAY FOR CENTRAL THROUGH NORTHEAST SOUTH DAKOTA. KOSCIELSKI
Special weather statement, Apr 26, 2:42 PM CST, 57 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
240 PM CST SAT APR 26 1986
..TORNADO WATCH TIL 9 PM ......
AT 240 PM CST THERE WAS ONLY A SMALL AREA OF THUNDERSTORMS LOCATED IN
NORTH CENTRAL NEBRASKA NEAR O'NEILL NEBRASKA. THERE WERE NO OTHER SHOWERS
OR THUNDERSTORMS IN OR NEAR THE SIOUXLAND AREA.
TANNERSpecial weather statement, Apr 26, 3:28 PM CST, 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 325 PM CST SAT APR 26 1986 ...VERY STRONG THUNDERSTORMS MOVING INTO SOUTHEAST SOUTH DAKOTA... AT 320 PM CST RADAR INDICATED VERY HEAVY AND SEVERE THUNDERSTORMS IN NORTHEAST NEBRASKA ABOUT 60 MILES SOUTHWEST OF YANKTON SOUTH DAKOTA.. 20 TO 30 MILES NORTH OF ONEIL NEBRASKA. AT 310 PM CST GOLF BALL SIZE HAIL WAS REPORTED 15 MILES NORTH OF ONEIL NEBRASKA. THESE THUNDERSTORMS WEREC MOVING TO THE NORTHEAST AT 35 MPH. PEOPLE IN THE SOUTHEAST SOUTH DAKOTA COUNTIES OF SOUTHERN CHARLES-MIX AND BON-HOMME SHLOUD BE ALERT UNTIL 430 PM CST FOR POSSIBLE LARGE HAIL ..VERY HEAVY RAIN..AND STRONG WINDS IN THUNDERSTORMS. BEHREND
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 4:13 PM CST | Severe Thunderstorm Warning | FSD | Hutchinson, Turner, Yankton | 62 min |
| Apr 26, 5:07 PM CST | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha, Turner | 68 min |
| Apr 26, 5:27 PM CST | Tornado Warning | FSD | Turner | 33 min |
| Apr 26, 5:41 PM CST | Tornado Warning | FSD | Lincoln | 34 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.