Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 1, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 25, 1986, 3:21 PM CST for Cottonwood County, Murray County, Minnesota. It was in force for 69 min.
The area
The counties it named.
The facts
- Issued
- Apr 25, 1986, 3:21 PM CST (21:21 UTC)
- Expired
- Apr 25, 1986, 4:30 PM CST
- In force
- 69 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, 9.4 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
- 683 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 227 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 252121 SVRFSD MNC101-033-252230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 321 PM CST FRI APR 25 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHWEST MINNESOTA...EASTERN MURRAY AND NORTHWEST COTTONWOOD SOME OF THE CITIES INCLUDED IN THE SEVERE THUNDERSTORM WARNING ARE WESTBROOK AND STORDEN. AT 318 PM CST RADAR INDICATED A SEVERE THUNDERSTORM 15 MILES NORTH OF WORTHINGTON MINESOTA MOVING NORTHEAST AT 50 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 RAIN 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. WEILAND
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 25, 2:44 PM CST, 37 minutes before
SEVERE WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 243 PM CST FRI APR 25 1986 ...TORNADO WATCH FOR EASTERN SOUTH DAKOTA UNTIL 800 PM CST... AT 230 PM CST...A THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED 25 MILES SOUTHEAST OF HURON..JUST WEST OF ARTESIAN..IN EAST CENTRAL SOUTH DAKOTA. SCATTERED RAINSHOWERS AND THUNDERSHOWERS WERE SPREAD ACROSS MUCH OF THE REST OF EASTERN SOUTH DAKOTA PRIMARILY NORTH OF A LINE FROM WINNER TO SIOUX FALLS. THE THUNDERSTORMS AND THUNDERSHOWERS WERE MOVING NORTHEAST AT 35 MILES AN HOUR. PERSONS IN SOUTHEAST BEADLE COUNTY AND MOST OF KINGSBURY COUNTY SHOULD WATCH FOR STRONG WINDS..HAIL..DANGEROUS LIGHTNING AND RAIN AS THxE STRONG THUNDERSTORM MOVES ACROSS THEIR AREA. STOREY
Special weather statement, Apr 25, 2:51 PM CST, 30 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTED FOR TITLE... NATIONAL WEATHER SERVICE HURON SD 243 PM CST FRI APR 25 1986 ...TORNADO WATCH FOR EASTERN SOUTH DAKOTA UNTIL 800 PM CST... AT 230 PM CST...A THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED 25 MILES SOUTHEAST OF HURON..JUST WEST OF ARTESIAN..IN EAST CENTRAL SOUTH DAKOTA. SCATTERED RAINSHOWERS AND THUNDERSHOWERS WERE SPREAD ACROSS MUCH OF THE REST OF EASTERN SOUTH DAKOTA PRIMARILY NORTH OF A LINE FROM WINNER TO SIOUX FALLS. THE THUNDERSTORMS AND THUNDERSHOWERS WERE MOVING NORTHEAST AT 35 MILES AN HOUR. PERSONS IN SOUTHEAST BEADLE COUNTY AND MOST OF KINGSBURY COUNTY SHOULD WATCH FOR STRONG WINDS..HAIL..DANGEROUS LIGHTNING AND RAIN AS THE STRONG THUNDERSTORM MOVES ACROSS THEIR AREA. STOREY
Special weather statement, Apr 25, 3:03 PM CST, 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 300 PM CST FRI APR 25 1986 ...TORNADO WATCH IN EFFECT UNTIL 800 PM CST FOR MUCH OF EASTERN SOUTH DAKOTA AND ADJACENT PORTIONS OF WESTERN MINNESOTA AND NORTHWEST IOWA... SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED OVER PARTS OF EASTERN SOUTH DAKOTA THIS AFTERNOON. AT 300 PM CST THE AREA WAS GENERALLY NORTH OF MITCHELL AND EAST OF THE MISSOURI RIVER. NO REPORTS OF SEVERE WEATHER HAVE BEEN RECIEVED SINCE 200 PM CST. HOWEVER..AT 215 PM CST A THUNDERSTORM WITH HEAVY RAIN MOVED THROUGH MITCHELL AND PRODUCED PEAS SIZE HAIL. THIS STORM HAS WEAKENED AND MOVED NORTHEAST SINCE THAT TIME. THE THUNDERSTORMS WILL CONTINUE TO PRODUCE BRIEF HEAVY RAIN AND SMALL HAIL THIS AFTERNOON AS THEY MOVE NORTHEAST AT 35 MPH. SINCE 245 PM CST AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN HAD DEVELOPED 10 MILES WEST OF WORTHINGTON MN AND WAS ALSO MOVING NORTHEAST AT 35 MPH. SCATTERED THUNDERSTORMS WILL DEVELOP AND CONTINUE OVER EASTERN SOUTH DAKOTA AND ADJACENT PORTIONS OF WESTERN MINNESOTA AND NORTHWEST IOWA THROUGH THIS EVENING. SOME OF THESE STORMS MAY BECOME SEVERE AND PERSONS SHOULD STAYED INFORMED ON THE CURRENT WEATHAR CONDITIONS AND THE FORECAST. WEILAND
Special weather statement, Apr 25, 3:14 PM CST, 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HURON SD 313 PM CST FRI APR 25 1986 ...TORNADO WATCH FOR EASTERN SOUTH DAKOTA UNTIL 800 PM CST... A THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED ABOUT 20 MILES EAST OF HURON AT 300 PM CST. THE THUNDERSTORM WAS MOVING NORTHEAST AT 35 MILES AN HOUR AND WAS EXPECTED TO MOVE THROUGH KINGSBURY COUNTY INTO HAMLIN COUNTY BY 400 PM CST. PERSONS IN NORTHERN KINGSBURY COUNTYAND SOUTHWEST HAMLIN COUNTY SHOULD WATCH FOR STRONG WINDS..HEAVY RAIN..DANGEROUS LIGHTNING AND HAIL AS THE THUNDERSTORM MOVES ACROSS THEIR AREA. STOREY
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.