Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 17, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 26, 1986, 10:08 PM CST for Dakota County, Hennepin County, Scott County, Minnesota. It was in force for 52 min. 2 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, 10:08 PM CST (04:08 UTC)
- Expired
- Apr 26, 1986, 11:00 PM CST
- In force
- 52 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Dakota County, MN, Hennepin County, MN, Scott County, MN
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, 10:10 PM CST | Thunderstorm Wind 0 | Hennepin, MN | |
| Apr 26, 10:25 PM CST | Thunderstorm Wind 0 | Hennepin, MN |
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
Minneapolis, MN (KSTC), launched 00:00Z, 4.1 hours before the alert went out and 21 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
- 1228 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 272 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 KMSP 270408 SVRMSP MNC053-139-123-037-270500- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 1008 PM CST SAT APR 26 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF EAST CENTRAL MINNESOTA...HENNEPIN...EASTERN SCOTT...RAMSEY AND NORTHERN DAKOTA AT.....SEVERE THUNDERSTORMS WERE OVER WESTERN HENNEPIN AND CENTRAL SCOTT COUNTY MOVING TO THE EAST AT 30 MILES AN HOUR. REPORTS OF HIGH WINDS AND TREE DAMAGE HAVE BEEN RECIEVED. CITIES INCLUDED IN THIS WARNING ARE THE TWIN CITIES OF MINNEAPOLIS AND ST PAUL AS WELL AS ROSEMOUNT...HASTINGS AND FARMINGTON. REMEMBER SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WINDS..LARGE HAIL AND FREQUENT LIGHTNING STRIKES. ALSO SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT AND BE PREP4ARED TO MOVE TO A PLACE OF SAFETY IF ONE IS SPOTTED. COLEMAN
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, 6:35 PM CST, 3 hours 33 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 635 PM CST SAT APR 26 1986 THUNDERSTORMS HAVE INCREASED RAPIDLY IN INTENSITY OVER EXTREME SOUTHWEST MINNESOTA. THEY WERE MAINLY IN A 50 MILE WIDE AREA FROM JUST SOUTH OF REDWOOD FALLS...SOUTHWEST TO SIOUX FALLS SOUTH DAKOTA. WHILE NO SEVERE WEATHER HAD BEEN REPORTED IN MINNESOTA BY 630 PM...PERSONS IN SOUTHWEST MINNESOTA SHOULD REMAIN ALERT TO THE POSSIBILITY OF CONTINUED STRENGTHENING OF THESE THUNDERSTORMS DURING THE EARLY EVENING HOURS. AN ISOLATED THUNDERSHOWER WAS FALLING OVER NORTHWEST WISCONSIN BETWEEN RUSH CITY AND SHELL LAKE. WIDELY SCATTERED RAINSHOWERS WERE FALLING NEAR ALEXANDRIA IN WEST CENTRAL MINNESOTA. MOVEMENT WAS TO THE NORTHEAST AT 30 MILES AN HOUR. KRAFT
Special weather statement, Apr 26, 9:40 PM CST, 28 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 940 PM CST SAT APR 26 1986 ...TORNADO WATCH FOR EXTREME SOUTHERN MINNESOTA UNTIL 1 AM CDT SUN MORN.. AT 930 PM...THUNDERSTORMS WITH VERY HEAVY RAIN...PEA SIZED HAIL...STRONG GUSTY WINDS...AND FREQUENT LIGHTNING STRIKES WERE OCCURRING IN MCLEOD SIBLEY AND NICOLLET COUNTIES OF SOUTH CENTRAL MINNESOTA. NO SEVERE WEATHER HAD BEEN REPORTED SINCE 830 PM...HOWEVER PERSONS IN THE VICINITY OF THESE STRONG THUNDERSTORMS SHOULD REMAIN ALERT FOR THREATENING WEATHER CONDITIONS. THUNDERSTORMS...SOME WITH HEAVY RAIN...CONTINUED OVER MUCH OF SOUTH CENTRAL...CENTRAL...AND EAST CENTRAL MINNESOTA...AS WELL AS E XTREME WEST CENTRAL WISCONSIN. MOVEMENT OF THE THUNDERSTORMS WAS TO THE NORTHEAST AT 30 MILES AN HOUR. KRAFT
Special weather statement, Apr 26, 10:07 PM CST, 1 minute before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1000 PM CST SAT APR 27 1986 ..TORNADO WATCH NUMBER 114 CANCELLED FOR SOUTHWEST CORNER OF MINNESOTA.. THE LINE OF SEVERE THUNDERSTORMS WHICH EARLIER PRODUCED SEVERE WEATHER IN SOUTHWEST MINNESOTA HAS MOVED EAST INTO SOUTHCENTRAL AND EASTCENTRAL MINNESOTA. THUS..AS OF 10PM THE TORNADO WATCH IS NO LONGER IN EFFECT FOR THAN PART OF MINNESOTA ROUGHLY WEST OF A REDWOOD FALLS TO FAIRMONT LINE. THE TORNADO WATCH REMAINS IN EFFECT FOR SOUTHCENTAL AND SOUTHEAST MINNESOTA AS WELL AS A PORTION OF WESTERN IOWA UNTIL 1AM. FOR THE MEDIA THAT PART OF THE WATCH WHICH IS CANCELLED IS THT PORTION WHICH WAS ISSUED FOR ZON1E 17. PAULSON
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 8:17 PM CST | Severe Thunderstorm Warning | MPX | Freeborn, Steele, Waseca | 3 hr |
| Apr 26, 10:08 PM CST | Severe Thunderstorm Warning | MPX | Ramsey | 52 min |
| Apr 26, 10:19 PM CST | Severe Thunderstorm Warning | MPX | Anoka | 41 min |
| Apr 26, 10:48 PM CST | Severe Thunderstorm Warning | MPX | Washington | 42 min |
| Apr 26, 11:00 PM CST | Severe Thunderstorm Warning | MPX | Olmsted, Wabasha | 60 min |
| Apr 26, 11:00 PM CST | Severe Thunderstorm Warning | MPX | Mower | 60 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.