Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 167, NWS Twin Cities, MN

August 16, 1986Renville County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 16, 1986, 10:57 PM CDT for Renville County, Minnesota. It was in force for 63 min. 1 report 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: Aug 16, 1986, 10:57 PM CDT (03:57 UTC)
Expired: Aug 17, 1986, 12:00 AM CDT
In force: 63 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Renville 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
Aug 16, 11:17 PM CDT	Hail 0.75	Renville, 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, 4.0 hours before the alert went out and 107 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3000 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: -91 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMSP 170357
SVRMSP
MNC129-170500-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1057 PM CDT SAT AUG 16 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1200 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

CENTRAL MINNESOTA...RENVILLE

AT 1055 PM A SEVERE THUNDERSTORM WAS INDICATED BY RADAR OVER
RENVILLE COUNTY OF SOUTHWEST MINNESOTA...NEAR THE CITY OF
OLIVIA.  MOVEMENT WAS TO THE EAST AT 20 MILES AN HOUR. CITIES
INCLUDED IN THIS WARNING ARE BIRD ISLAND AND HECTOR.

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.

PAULSON

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, Aug 16, 6:53 PM CDT, 4 hours 4 minutes before

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
645 PM CDT SAT AUG 16 1986

...STRONG THUNDERSTORMS DEVELOPING OVER SOUTHERN MINNESOTA AND
INTO NORTHERN AND WESTERN WISCONSIN.

NATIONAL WEATHER SERVICE RADAR IN MINNEPOLIS SHOWED A LINE OF
THUNDERSTORMS DEVELOPING ACROSS CENTRAL AND NORTHERN WISCONSIN AND INTO
SOUTHERN MINNESOTA.  AT 640 PM THE STRONGEST STORMS RAN IN A LINE FROM
NEAR CHIPPEWA FALLS IN CHIPPEWA COUNTY WISCONSIN TO WHEELER IN NORTHRN
DUNN COUNTY WISCONIN THEN INTO THE SOUTHERN METRO AREA OF THE TWIN
CITIES.   ANOTHER STRONG THUNDERSTORM REMAINED OVER SOUTHWEST MINESOTA
GENERALLY IN THE MARSHALL AREA.

THE STRONGEST THUNDERSTORMS IN THE TWIN CITIES RAN ACROSS NORTHERN
SCOTT..NORTHERN DAKOTA..AND INTO SOUTHERN WASHNGTON COUNTIES.
THIS LINE OF THUNDERSTORMS WILL SAG SOUTH THROUGH THESE COUNTIES
DURING THE EARLY EVENING.  OTHER THUNDERSTORMS WERE BEGINNING TO
DEVELOP INTO SOUTHERN CARVER COUNTY.  SOME OF THE CITIES IN THESE
COUNTIES THAT WILL BE AFFECTED BY THESE THUNDERSTORMS BY 730
PM ARE...PRIOR LAKE..JORDAN..HASTINGS..ROSEMOUNT..AND COTTAGE
GROVE.

THE GENERAL MOVEMENT OF THESE THUNDERSTORMS WAS EAST AT 15 TO
20 MPH.

PERSONS IN SOUTHERN MINNESOTA AS WELL AS INTO WESTERN WISCONSIN
SHOULD BE ALERT FOR THE POSSIBILITY OF SEVERE WEATHER THIS EVENING.
PAULSON

Special weather statement, Aug 16, 7:38 PM CDT, 3 hours 19 minutes before

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
735 PM CDT SAT AUG 16 1986

...VERY STRONG THUNDERSTORMS REMAIN IN CENTRAL WISCONSIN AND INTO
SOUTHERN MINNESOTA...

NATIONAL WEATHER SERVICE RADAR IN MINNEPOLIS SHOWED A LINE OF
VERY STRONG THUNDERSTORMS IN CENTRAL WISCONSIN AND THEN ACROSS THE
SOUTHERN METRO AREA OF THE TWIN CITIES.  ONE OF THESE THUNDERSTORMS
SPAWNED HAIL OF GOLFBALL SIZE IN WESTERN DUNN COUNTY NEAR KNAPP WHICH
IS ABOUT 15 MILES NORTHWEST OF MENOMONIE.  THIS HAIL FELL ABOUT 723 PM.
A SEVERE THUNDERSTORM WARNING IS IN EFFECT UNTIL 815PM FOR DUNN COUNTY.
THIS THUNDERSTORM IS MOVING EAST AT 10 TO 15 MPH AND WILL PASS BETWEEN
WHEELER AND MENOMONIE AFTER 8PM.

THE LINE OF THUNDERSTORMS REMAINED ACROSS THE NORTHERN PORTIONS OF
SCOTT AND DAKOTA COUNTIES AS WELL AS EXTREME SOUTHERN HENNEPIN AND
SOUTHERN WASHINGTON AT 735PM.  PEA HAIL WAS REPORTED IN BLOOMINGTON
OF SOUTHERN HENNEPIN COUNTY AROUND 725PM.  DUE TO THE VERY SLOW
MOVEMENT OF THESE THUNDERSTORMS SOME AREAS OF THE SOUTHERN TWIN
CITY METRO AREA MAY EXPERIENCE VERY HEAVY RAINS THIS EVENING.

THE GENERAL MOVEMENT OF THESE THUNDERSTORMS WAS EAST AT 10 TO
20 MPH.

PERSONS IN SOUTHERN MINNESOTA AS WELL AS INTO WESTERN WISCONSIN
SHOULD BE ALERT FOR THE POSSIBILITY OF SEVERE WEATHER THIS EVENING.
PAULSON

Special weather statement, Aug 16, 9:49 PM CDT, 1 hour 8 minutes before

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
940 PM CDT SAT AUG 16 1986

THE SEVERE THUNDERSTORMS OVER WESTCENTRAL WISCONSIN IN ST CROIX
COUNTY HAVE WEAKENED CONSIDERABLY SINCE ABOUT 920PM.  NO REPORTS OF
SEVERE WEATHER HAVE BEEN RECEIEVED SINCE AROUND 9PM WHEN GOLFBALL HAIL
FELL IN HOLTON OF EXTREME WESTERN ST CROIX COUNTY.  OTHER THUNDERSTORMS
REMAIN SCATTERED IN AN EAST TO WEST LINE FROM NEAR EAU CLAIR THROUGH
WAUSAU.

OTHER VERY STRONG THUNDERSTORMS WERE DEVELOPING AND MAKING FURTHER
INROADS INTO WESTERN MINNESOTA AND CENTRAL MINNESOTA.  THE AREA OF
STRONGEST STORMS WAS SCATTERED IN AN AREA FROM JUST NORTH OF MARSHALL IN
YELLOW MEDICINE COUNTY EAST TO AROUND GRANITE FALLS IN RENVELLE COUNTY
AND THEN INTO THE COSMOS..HECTOR AREA OF MEEKER AND RENVILLE COUNTIES.
THESE THUNDERSTORMS WILL MOVING INTO WRIGHT..MC LEOD AND SIBLEY COUNTIES
AFTER 10PM.

THESE STORMS WERE MOVING EAST TO }SOUTHEAST AT AROUND 20 MPH.
IF THREATENING WEATHER APPROACHES YOUR SEEK SHELTER AND IF SAFTEY
PERMITS RELAY SEVERE WEATHER REPORTS TO LOCAL LAW OFFICALS FOR
RELAY TO THE NATIONAL WEATHER SERVICE.
PAULSON

Special weather statement, Aug 16, 10:20 PM CDT, 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1015 PM CDT SAT AUG 16 1986

VERY STRONG THUNDERSTORMS CONTINUED TO DEVELOP AND CONTINUE TO MAKE
PROGRESS ACROSS WESTERN AND INTO CENTRAL MINNESOTA.  THE LEADING EDGE
OF THESE THUNDERSTORMS WAS MOING INTO THE WESTERN TWIN CITY METRO AREA.
MARBLE HAIL WAS REPORTED IN DELANO OF SOUTHEAST WRIGHT COUNTY ABOUT 10
PM.  THIS THUNDERSTORM WAS MOVING INTO INTO THE INDEPENDENCE AREA OF
WESTERN HENNEPIN COUNTY AT 1015PM AND TRACK TOWARD THE PLYMOUTH AREA
OF HENNIPIN COUNTY AROUND 1030 PM IF IT MAINTAINS ITS STRENGTH.

OTHER STRONG THUNDERSTORMS REMAINED SCATTERED ACROSS MEEKER..RENVILLE
MC CLEOD..WRIGHT..AND KANDIYOHI COUNTIES. WHICH IS WEST OF THE TWIN
CITIES.  SOME OF CITIES AND TOWNS WHICH MAY BE NEAR THESE STRONGER
STORMS ARE OLIVIA..WILLMAR..AND LITCHFIELD.

THESE THUNDERSTORMS WERE MOVING EAST TO SOUTHEAST AT 20 MPH.
IF THREATENING WEATHER APPROACHES YOUR SEEK SHELTER AND IF SAFTEY
PERMITS RELAY SEVERE WEATHER REPORTS TO LOCAL LAW OFFICALS FOR
RELAY TO THE NATIONAL WEATHER SERVICE.
PAULSON

Local storm report, Aug 16, 10:45 PM CDT, 12 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1045 PM CDT SAT AUG 9 1986

ATTN SELS A MSP

723 PM CDT  GOLF BALL SIZE HAIL NEAR CITY OF KNAPP OF DUNN COUNTY WI.

730 PM CDT  2 INCH HAIL IN BLOOMINGTON MN..S HENNEPIN COUNTY.
            (OFF DUTY NWS EMPLOYEE)

740 PM TO 800 PM CDT...INTERMITENT GOLF BALL SIZE HAIL AT MSP
                       AIRPORT.

742 PM CDT  52 MPH WIND GUST AT MSP.

815 PM CDT  GOLF BALL SIZE HAIL AT MAPLEWOOD MN OF RAMSEY COUNTY.

825 PM CDT  GOLF BALL SIZE HAIL AT OAKDALE MN OF WASHINGTON COUNTY.
           ( REPORTED  BY SKYWARN SPOTTER)
849 PM CDT  3/4 INCH HAIL AT HOULTON WI OF ST. CROIX COUNTY. REPORTED
            BY SHERIFF DISPATCH.

RICHARDSON

Local storm report, Aug 16, 10:47 PM CDT, 10 minutes before

STORM REPORT....CORRECTION FOR DATE
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1045 PM CDT SAT AUG 16 1986

ATTN SELS A MSP

723 PM CDT  GOLF BALL SIZE HAIL NEAR CITY OF KNAPP OF DUNN COUNTY WI.

730 PM CDT  2 INCH HAIL IN BLOOMINGTON MN..S HENNEPIN COUNTY.
            (OFF DUTY NWS EMPLOYEE)

740 PM TO 800 PM CDT...INTERMITENT GOLF BALL SIZE HAIL AT MSP
                       AIRPORT.

742 PM CDT  52 MPH WIND GUST AT MSP.

815 PM CDT  GOLF BALL SIZE HAIL AT MAPLEWOOD MN OF RAMSEY COUNTY.

825 PM CDT  GOLF BALL SIZE HAIL AT OAKDALE MN OF WASHINGTON COUNTY.
           ( REPORTED  BY SKYWARN SPOTTER)
849 PM CDT  3/4 INCH HAIL AT HOULTON WI OF ST. CROIX COUNTY. REPORTED
            BY SHERIFF DISPATCH.

RICHARDSON

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 16, 7:47 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Ramsey	28 min
Aug 16, 7:47 PM CDT	Severe Thunderstorm Warning	MPX	Washington	28 min
Aug 16, 8:22 PM CDT	Severe Thunderstorm Warning	MPX	Washington	38 min
Aug 17, 1:07 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet	33 min
Aug 17, 1:50 AM CDT	Severe Thunderstorm Warning	MPX	Dodge, Goodhue, Rice	40 min
Aug 17, 1:50 AM CDT	Severe Thunderstorm Warning	MPX	Steele	40 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1986 Every 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.