Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 22, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at May 8, 1986, 6:01 PM CDT for Brookings County, South Dakota. It was in force for 29 min.
The area
The counties it named.
The facts
- Issued
- May 8, 1986, 6:01 PM CDT (23:01 UTC)
- Expired
- May 8, 1986, 6:30 PM CDT
- In force
- 29 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Brookings 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 12:00Z, 11.0 hours before the alert went out and 140 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
- 787 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 297 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 082301 SVRFSD SDC011-082330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 601 PM CDT THU MAY 8 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 630 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF EAST CENTRAL SOUTH DAKOTA...NORTHWEST BROOKINGS SOME OF THE CITIES INCLUDED IN EAST CENTRAL SOUTH DAKOTA WERE VOLGA AND BRUCE. AT 555 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTHWEST OF BROOKINGS SOUTH DAKOTA MOVING NORTH AT 20 MPH. AT 540 PM CDT A TORNADO TOUCHED DOWN BRIEFLY NEAR LAKE SINAI AND LIFTED A 1300 POUND HORSE AND DROPED IT ON ITS SIDE. NO OTHER DAMAGE INDICATED. THE TORNADO RETREATED QUICKLY TO THE CLOUDS. 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 R AIN 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. UMLAND
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, May 8, 2:42 PM CDT, 3 hours 19 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 240 PM CDT THU MAY 8 1986 AT 230 PM CDT...SCATTERED INTENSE THUNDERSTORMS..WITH VERY HEAVY RAIN.. CONTINUED OVER PARTS OF CENTRAL AND NORTHEAST CENTRAL SOUTH DAKOTA. THE STRONGEST THUNDERSTORMS WERE OCCURRING WEST OF THE MISSOURE RIVER FROM NEAR SPARKS IN NORTH CENTAL NEBRASKA TO NEAR LA PLANT IN DEWEY COUNTY. ALSO NORTH OF A PIERRE/WATERTOWN LINE. RESIDENTS SHOULD BE ON THE ALERT FOR THREATING WEATHER CONDITIONS AND SHOULD SEEK A PLACE OF SAFTEY IF NEEDED. MOVEMENT WAS NORTH AT 30 MILES AN HOUR. MILLER
Special weather statement, May 8, 3:20 PM CDT, 2 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 320 PM CST THU MAY 8 1986 ...INTENSE THUNDERSTORMS IN SOUTHCENTRAL SOUTH DAKOTA... AT 315 PM CDT INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED TO DEVELOP OVER SOUTHCENTRAL SOUTH DAKOTA IN TRIPP COUNTY. THE THUNDER/ STORMS EXTENDED FROM 15 MILES NORTHWEST OF WINNER SOUTH DAKOTA TO 15 MILES SOUTH OF WINNER. THE THUNDERSTORMS WERE MOVING NORTH AT 30 MPH. THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAIN..GUSTY WINDS..AND SMALL HAIL AS THEY MOVE NORTH THROUGH TRIPP COUNTY AFFECTING THE TOWNS OF WINNER AND IDEAL SOUTH DAKOTA UNTIL 420 PM CDT. THEOPHILUS
Special weather statement, May 8, 3:32 PM CDT, 2 hours 29 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 340 PM CDT THU MAY 8 1986 AT 325 PM CDT...SCATTERED INTENSE THUNDERSTORMS..WITH VERY HEAVY RAIN.. CONTINUED OVER PARTS OF CENTRAL AND NORTHEAST CENTRAL SOUTH DAKOTA. THE STRONGEST THUNDERSTORMS WERE OCCURRING WEST OF THE MISSOURE RIVER FROM NEAR SPARKS IN NORTH CENTAL NEBRASKA TO NEAR PRESHO IN LYMAN COUNTY.. ALSO NORTH OF A PIERRE/WATERTOWN LINE. RESIDENTS SHOULD BE ON THE ALERT FOR THREATING WEATHER CONDITIONS AND SHOULD SEEK A PLACE OF SAFTEY IF NEEDED. MOVEMENT WAS NORTH AT 30 MILES AN HOUR. MILLER
Special weather statement, May 8, 3:36 PM CDT, 2 hours 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 335 PM CDT THU MAY 8 1986 AT 330 PM CDT SHOWERS AND THUNDERSTORMS WERE WIDESPREAD ACROSS THE SIOUXLAND AREA. THE HEAVIEST PRECIPITATION WAS IN THUNDERSTORMS LOCATED 50 MILES NORTH OF SIOUX CITY NEAR ROCK VALLEY..50 MILES NORTHEAST OF SIOUX CITY NEAR CHEROKEE..AND 50 MILES SOUTHEAST OF SIOUX CITY JUST NORTH OF MISSOURI VALLEY. THESE THUNDERSTORMS CONTINUE MOVING NORTH AT 025 TO 30 MILES AN HOUR AND HAVE THE PRODUCED STRONG GUSTY WINDS..SMALL HAIL AND BRIEF HEAVY RAIN. KROPP
Special weather statement, May 8, 5:03 PM CDT, 58 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 500 PM CDT THU MAY 8 1986 ...WEATHER ADVISORY FOR LIVESTOCK WEST TONIGHT... ...TORNADO WATCH FOR PARTS OF THE EAST AND CENTRAL THIS EVENING... THE NATIONAL WEATHER SERVICE HAS CONTINUED A WEATHER ADVISORY FOR TRAVELERS FOR THE WESTERN FOURTH OF SOUTH DAKOTA. COLD RAIN IS FORECAST TO BE COMBINED WITH LOW TEMPERATURES IN THE MIDDLE TO UPPER 30S AND NORTH WINDS OF 10 TO 20 MPH. SOME SNOW IS ALSO EXPECTED IN THE BLACK HILLS WITH ACCUMULATIONS OF 2 TO 4 INCHES POSSIBLE ALONG WITH LOW TEMPERATURES NEAR 30 DEGREES. THESE CODITIONS WILL PRESENT A DANGER TO THE LIFE OF YOUNG LIVESTOCK. A TORNADO WATCH IS IN EFFECT FOR PARTS OF THE EAST AND CENTRAL THIS EVENING. SEVERE THUNDERSTORMS WITH DAMAGING WINDS AND LARGE HAIL AND LOCALLY HEAVY RAIN PRODUCING LOW LAND FLOODING ARE POSSIBLE OVER PARTS OF EAST AND CENTRAL SOUTH DAKOTA TONIGHT. BIER
Special weather statement, May 8, 5:36 PM CDT, 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 535 PM CDT THU MAY 8 1986 ...A TORNADO WATCH UNTILL 11 PM CDT FOR PARTS OF THE SIOULAND AREA... AT 435 PM CDT SHOWERS AND THUNDERSTORMS WERE IN A 25 MILE WIDE BAND FROM NEAR YANKTON SOUTH DAKOTA OR ABOUT 60 MILES NORTHWEST OF SIOUX CITY..TO 30 MILES NORTH OF SIOUX CITY TO NEAR CHEROKEE IOWA. THESE SHOWERS AND THUNDERSTORMS WERE MOVING NORTH AT 30 MILES AN HOUR. NO 6SEVERE WEATHER HAS BEEN REPORTED WITH THIS BAND. THE SIOUX CITY METRO AREA IS NOT INCLUDED IN THE TORNADO WATCH AREA. QUINN
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 8:27 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix | 53 min |
| May 7, 9:23 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme | 57 min |
| May 7, 9:53 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 67 min |
| May 7, 9:53 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 67 min |
| May 7, 10:25 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Turner | 65 min |
| May 7, 10:25 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln | 65 min |
| May 7, 11:06 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 59 min |
| May 7, 11:06 PM CDT | Severe Thunderstorm Warning | FSD | Douglas | 59 min |
| May 7, 11:06 PM CDT | Severe Thunderstorm Warning | FSD | McCook | 59 min |
| May 7, 11:32 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 59 min |
| May 8, 6:07 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 43 min |
| May 8, 6:20 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 30 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; the sounding from the Mesonet's radiosonde archive.