Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 95, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 10, 1986, 11:36 PM CDT for Minnehaha County, South Dakota. It was in force for 69 min.
The area
The counties it named.
The facts
- Issued
- Jul 10, 1986, 11:36 PM CDT (04:36 UTC)
- Expired
- Jul 11, 1986, 12:45 AM CDT
- In force
- 69 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Minnehaha 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
Omaha, NE (KOAX), launched 00:00Z, 4.6 hours before the alert went out and 264 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
- 3595 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 84 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 110436 SVRFSD SDC099-110545- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1136 PM CDT THU JUL 10 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1245 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTHEAST SOUTH DAKOTA...MINNEHAHA SOME OF THE CITIES INCLUDED IN SOUTHEASTERN SOUTH DAKOTA ARE SIOUX FALLS..DELL RAPIDS AND GARRETSON. AT 1135 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 12 MILES WEST OF SIOUX FALLS NEAR WALL LAKE. THIS SEVERE THUNDERSTORM WAS MOVING EAST AT 25 MPH. AT 1135 PM CDT 60 MPH WINDS WERE REPORTED AT WALL LAKE. 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 STORMS CAN AND OCCASIONALLY DO YPRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT. KAPELA
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, Jul 10, 9:13 PM CDT, 2 hours 23 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
915 PM CDT THU JUL 10 1986
TIME LOCATION EVENT
753 TO 813 PM CDT CHAMBERLAIN AMOS WEATHER WIND GUSTS TO 61 :MPH.
OBSERVATION STATION RAINFALL OF 0.95 BETWEEN
730 PM CDT AND 9 PM CDT
UMLANDSpecial weather statement, Jul 10, 10:27 PM CDT, 1 hour 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 1025 PM CDT THU JUL 10 1986 ...STRONG THUNDERSTORMS MOVING INTO THE SIOUXLAND AREA... AT 1010 PM RADAR SHOWED A LINE OF INTENSE THUNDERSTORMS LOCATED FROM YANKTON SOUTH DAKOTA...55 NORTHWEST OF SIOUX CITY TO 20 MILES WEST OF NORFOLK NEBRASKA. THESE STORMS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR. THESE STORMS WILL LIKEY PRODUCE VERY HEAVY RAIN..WIND GUSTS TO 50 MILES AN/ HOUR AND SMALL HAIL. PERSONS IN DIXON COUNTY ESPECIALLY PEOPLE IN THE TOWNS OF DIXON AND CONCORD SHOULD BE ON THE LOOKOUT FOR THIS LINE OF STORMS AS THEY MOVE INTO THE AREA BETWEEN 11 PM AND MIDNIGHT. TANNER
Special weather statement, Jul 10, 10:29 PM CDT, 1 hour 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1030 PM CDT THU JUL 10 1986 ...SEVERE THUNDERSTORM WATCH TIL 300 AM CDT FOR SOUTHEAST SOUTH DAKOTA AND ADJACENT PORTIONS OF SOUTHWEST MINNESOTA AND NORTHWEST IOWA... AT 1020 PM CDT RADAR INDICATED A LINE OF INTENSE THUNDERSTORMS WHICH EXTENDED FROM YANKTON TO ALEXANDRIA TO BROOKINGS. THESE INTENSE THUNDERSTORMS WERE PRODUCING VERY HEAVY RAIN..STRONG WINDS TO AROUND 40 MPH AND SMALL HAIL. THESE INTENSE THUNDERSTORMS WERE MOVING EAST AT 25 MPH AND WILL AFFECT THE CITIES OF VERMILLION..SIOUX FALLS AND CANTON BETWEEN 1045 PM CDT AND 1145 PM CDT. THE SEVERE THUNDERSTORM WARNING THAT WAS IN EFFECT FOR MOODY COUNTY UNTIL 1030 PM CDT HAS EXPIRED. THE THUNDERSTORMS IN THAT AREA HAVE DECREASED IN INTENSITY. THE SEVERE WARNING IN EFFECT UNTIL 1100 PM CDT FOR ROCK COUNTY AND SOUTHERN PIPESTONE COUNTY IN MINNESOTA REMAINS IN EFFECT UNTIL 1100 PM CDT. WEILAND
Local storm report, Jul 10, 11:05 PM CDT, 31 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1105 PM CDT THU JUL 10 1986
TIME LOCATION EVENT
1100 PM CDT WEST OF ELK POINT SD 50 MP4H WINDS
VIA HIGHWAY PATROL
1101 PM CDT WEST OF BERESFORD SD 60 MPH WINDS AND
VIA CIVIL DEFENSE HEAVY RAIN
THEOPHILUSSpecial weather statement, Jul 10, 11:20 PM CDT, 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 1120 PM CDT THU JUL 10 1986 ...SEVERE THUNDERSTORMS WATCH TILL 3 AM. ..SEVERE THUNDERSTORM WARNING FOR UNION COUNTY TILL MIDNIGHT... AT 1110 PM RADAR SHOWED A AREA OF INTENSE THUNDERSTORMS LOCATED FROM SIOUX FALLS SOUTH DAKOTA TO 40 WEST OF YANKTON SOUTH DAKOTA TO NORFOLK NEBRASKA. THE MOST INTENSE THUNDERSTORMS WERE LOCATED IN A LINE FROM 5 MILES NORTH OF BERESFORD ..45 MILES NORTHWEST OF SIOUX CITY TO EMERSON NEBRASKA...20 SOUTHWEST OF SIOUX CITY. THIS AREA AND LINE OF STROMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR. VERY HEAVY RAIN..WIND GUSTS TO 50 MILES AN HOUR AND SMALL HAIL HAS BEEN REPORTED WITH THESE ST ORMS. REPORT ANY SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT AGENCY. TANNER
Local storm report, Jul 10, 11:28 PM CDT, 8 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1128 PM CDT THU JUL 10 1986
TIME LOCATION EVENT
1120 PM CDT HURLEY SD IN TURNER COUNTY STRONG STRAIGHTT LINE
OR 23 MILES SOUTHWEST OF WINDS THAT TOOK ROOF
SIOUX FALLS SD OFF BUILDING IN TOWN.
NO ELECTRICITY IN TOWN.
THEOPHILUSThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 8:22 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule | 58 min |
| Jul 10, 9:25 PM CDT | Severe Thunderstorm Warning | FSD | Moody | 65 min |
| Jul 10, 10:45 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Turner | 60 min |
| Jul 10, 10:53 PM CDT | Severe Thunderstorm Warning | FSD | Union | 62 min |
| Jul 10, 11:06 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 54 min |
| Jul 10, 11:08 PM CDT | Severe Thunderstorm Warning | FSD | Moody | 67 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.