Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 39, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at May 29, 1986, 5:08 PM CDT for Cottonwood County, Murray County, Minnesota. It was in force for 67 min.
The area
The counties it named.
The facts
- Issued
- May 29, 1986, 5:08 PM CDT (22:08 UTC)
- Expired
- May 29, 1986, 6:15 PM CDT
- In force
- 67 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Cottonwood County, MN, Murray County, MN
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
Minneapolis, MN (KSTC), launched 12:00Z, 10.1 hours before the alert went out and 175 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
- 1481 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 64 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 292208 SVRFSD MNC101-033-292315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 508 PM CDT THU MAY 29 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 615 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHWEST MINNESOTA...MURRAY AND EXTREME WESTERN COTTONWOOD SOME OF THE CITIES INCLUDED IN SOUTHWEST MINNESOTA ARE SLAYTON ..WESTBROOK..CURRIE AND THE LAKE SHETEK AREA. AT 500 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM IN EXTREME WESTERN COTTONWOOD COUNTY ABOUT 25 MILES NORTHEAST OF WORTHINGTON MINNESOTA. GOLF BALL SIZE HAIL WAS REPORTED WITH THIS SEVERE THUNDERSTORM IN EXTREnME WESTERN COTTONWOOD COUNTY. 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, May 29, 11:56 AM CDT, 5 hours 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 1155 AM CDT THU MAY 29 1986 AT 1140 AM CDT THE SLOAN FIRE CHIEF RPORTED A FUNNEL CLOUD EAST OF SLOAN ON THE WEST SIDE OF I-29 MOVING NORTH. SEVERAL LAW ENFORCEMENT OFFICERS WERE SENT TO VERIFY THE FUNNEL AND COULD NOT SPOT IT OR THAT IT HAD MOVED BACK INTO THE CLOUD. RADAR INDICATED A MODERATE SHOWER IN THE AREA MOVING TO THE NORTHWEST AT 15 MILES AN HOUR. PEOPLE IN SOUTHERN AND WESTERN WOODBURY COUNTY IN IOWA AND EASTERN DAKOTA COUNTY IN NEBRASKA SHOULD BE ALERT AND TAKE COVER IF NECESSARY. ROSNER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 4:31 PM CDT | Tornado Warning | FSD | Cottonwood | 29 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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.