Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 7, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 25, 1986, 3:30 PM CST for Dakota County, Minnesota. It was in force for 30 min. 3 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 25, 1986, 3:30 PM CST (21:30 UTC)
- Expired
- Apr 25, 1986, 4:00 PM CST
- In force
- 30 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Dakota 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 25, 3:30 PM CST | Hail 0.75 | Dakota, MN | |
| Apr 25, 3:35 PM CST | Hail 2.5 | Dakota, MN | |
| Apr 25, 3:50 PM CST | Hail 2.75 | Dakota, 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 12:00Z, 9.5 hours before the alert went out and 47 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 KMSP 252130 SVRMSP MNC037-163-WIC109-093-252200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 330 PM CST FRI APR 25 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 400 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF EAST CENTRAL MINNESOTA...EASTERN DAKOTA AND SOUTHERN WASHINGTON WEST CENTRAL WISCONSIN...WESTERN ST CROIX AND NORTHWEST PIERCE AT 320 PM CST 2 INCH HAIL WAS REPORTED AT FARMINGTON MINNESOTA WHICH IS ABOUT 20 MILES SOUTH..SOUTHEAST OF DOWNTOWN MINNEAPOIS. THIS SEVERE THUNDERSTORM WAS MOVING NORTHEAST AT 45 TO 50 MPH. SOME CITIES IN THE PATH OF THIS STORM ARE STILLWATER MINNEYSOTA.. PRESCOTT WISCONSIN AND HUDSON WISCONSIN.
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 3:30 PM CST | Severe Thunderstorm Warning | MPX | Washington | 30 min |
| Apr 25, 3:55 PM CST | Severe Thunderstorm Warning | MPX | Pope, Swift | 50 min |
| Apr 25, 4:30 PM CST | Severe Thunderstorm Warning | MPX | Kandiyohi | 60 min |
| Apr 25, 4:34 PM CST | Severe Thunderstorm Warning | MPX | Renville | 21 min |
| Apr 25, 4:40 PM CST | Severe Thunderstorm Warning | MPX | Houston, Winona | 40 min |
| Apr 25, 4:45 PM CST | Severe Thunderstorm Warning | MPX | Stearns | 60 min |
| Apr 25, 5:15 PM CST | Severe Thunderstorm Warning | MPX | Meeker | 30 min |
| Apr 25, 5:15 PM CST | Severe Thunderstorm Warning | MPX | Todd | 30 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.