Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 25, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 12, 1986, 4:10 PM CDT for Redwood County, Renville County, Minnesota. It was in force for 50 min.
The area
The counties it named.
The facts
- Issued
- May 12, 1986, 4:10 PM CDT (21:10 UTC)
- Expired
- May 12, 1986, 5:00 PM CDT
- In force
- 50 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Redwood County, MN, Renville 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, 9.2 hours before the alert went out and 123 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
- 62 J/kg
- Mixed-layer CIN
- -206 J/kg
- Mixed-layer LCL
- 776 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 93 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 122110 SVRMSP MNC129-127-085-122200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 410 PM CDT MON MAY 12 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF CENTRAL MINNESOTA...RENVILLE...NORTHERN REDWOOD AND WESTERN MCLEOD AR 4 PM SEVERE THUNDERSTORMS WITH GOLFBALL TO BASEBALL SIZE HAIL WERE REPORTED BY LAWENFORCEMENT PERSONNEL IN SOUTHWEST MINNESOTA. RADAR INDICATED THAT THE STORMS CONTINUED SEVERE AND WERE MOVING NORTHEAST AT ABOUT 30 MILES AN HOUR. PERSONS IN REDWOOD FALLS.. BIRD ISLAND AND HUTCHINSON SHOULD BE ON THE ALERT FOR HAIL AND OTHER SEVERE WEATHER. 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 PREPARED 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, May 12, 3:40 PM CDT, 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MN 340 PM CST MON MAY 12 1986 .SEVERE THUNDERATORM WATCH REMAINS IN EFFECT TILL 9PM CDT AT 330 PM RADAR SHOWED THUNDERSTORMS DEVELOPING IN WESTERN MINNESOTA AND MOVING EAST NORTHEAST AT 35 MILE AN HOUR. A LARGE THUNDERSTORM CONTAINING VERY HEAVY RAIN..HAIL AND BRIEF GUSTY WINDS WAS MOVING ACROSS THE EXTREME SOUTH PORTION OF MEEKER COUNTY SOUTH OF THE CITY OF COSMOS APPROACHING THE CITY OF CEDAR MILLS MINNESOTA IN SOUTH CENTRAL MEEKER COUNTY. SEVERE THUNDERSTORM WARNINGS ARE IN EFFECT FOR THE COUNTIES SOUTH OF MEEKER COUNTY TRIPLETT/NISTLER
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 3:39 PM CDT | Severe Thunderstorm Warning | MPX | McLeod | 26 min |
| May 12, 3:50 PM CDT | Severe Thunderstorm Warning | MPX | Renville | 20 min |
| May 12, 4:10 PM CDT | Severe Thunderstorm Warning | MPX | McLeod | 50 min |
| May 12, 4:41 PM CDT | Tornado Warning | MPX | Carver, McLeod, Wright | 29 min |
| May 12, 5:08 PM CDT | Tornado Warning | MPX | Carver, McLeod, Wright | 2 min |
| May 12, 5:30 PM CDT | Severe Thunderstorm Warning | MPX | Meeker | 60 min |
| May 12, 5:34 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin, Ramsey | 56 min |
| May 12, 5:34 PM CDT | Severe Thunderstorm Warning | MPX | Washington | 56 min |
| May 12, 6:06 PM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod, Wright | 24 min |
| May 12, 6:24 PM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod, Wright | 6 min |
| May 12, 6:27 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 33 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.