Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 73, NWS Sioux Falls, SD

June 28, 1986Jackson County, Nobles County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 28, 1986, 4:45 AM CDT for Jackson County, Nobles County, Minnesota. It was in force for 60 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
Jun 28, 1986, 4:45 AM CDT (09:45 UTC)
Expired
Jun 28, 1986, 5:45 AM CDT
In force
60 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

Counties Jackson County, MN, Nobles 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

TimeReportWhereRemark
Jun 28, 5:00 AM CDTHail 1.75Nobles, 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, 9.8 hours before the alert went out and 197 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 1986-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 1986-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1894 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
13 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 KFSD 280945
SVRFSD
MNC063-105-133-281045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
445 AM CDT SAT JUN 28 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 545 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTHWEST MINNESOTA...JACKSON...NOBLES AND EASTERN ROCK

SOME OF THE CITIES INCLUDED IN THIS WARNING ARE WORTHINGTON AND
JACKSON MINNESOTA.

AT 435 AM CDT  RADAR INDICATED A SEVERE THUNDERSTORM IN CENTRAL
ROCK COUNTY MINNESOTA ABOUT 15 MILES NORTHEAST OF SIOUX FALLS
SOUTH DAKOTA..AND ALSO IN CENTRAL NOBLES COUNTY MINNESOTA ABOUT
6 MILES NORTHWEST OF WORTHINGTON MINNESOTA.

 THESE DANGEROUS THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT
40 MPH.

A SEVERE THUNDERSTORM WARNING IS NO LONGER IN EFFECT FOR LAKE..
NORTHERN MINNEHAHA..AND MOODY COUNTIES IN SOUTH DAKOTA AND
PIPESTONE COUNTY IN MINNESOTA.

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 OCCASISONALLY DO PRODUCE A TORNADO WITH LITTLE OR
NO ADVANCE WARNING SO BE ON THE LOOKOUT.

THEOPHILUS

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, Jun 27, 11:49 PM CDT, 4 hours 56 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
1145 PM CDT FRI JUN 27 1986

...SEVERE THUNDERSTORM WATCH FOR PORTIONS OF NORTHERN AND CENTRAL SOUTH
DAKOTA...AND SOUTHERN NORTH DAKOTA...UNTIL 400 AM CDT SATURDAY JUNE 28..

AT 1130 PM CDT...THERE WERE INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN
IN NORTHCENTRAL AND NORTHEASTERN SOUTH DAKOTA. THE STRONGEST STORMS WERE
15 MILES EAST OF MOBRIDGE...AND 40 MILES NORTHWEST OF ABERDEEN. THESE
THUNDERSTORMS ARE CAPABLE OF PRODUCING HAIL AND STRONG WINDS.
MOVEMENT WAS SOUTHEAST AT 45 MILES AN HOUR.

THERE WERE ALSO SCATTERED SHOWERS AND THUNDERSHOWERS IN NORTHEASTERN
SOUTH DAKOTA. THE SHOWERS WERE IN A A 40 MILE WMIDE AREA EXTENDING FROM
BROOKINGS TO 40 MILES NORTHEAST OF ABERDEEN.
MOVEMENT WAS EAST AT 35 MILES AN HOUR.
KRAUSE/ORGISH
Special weather statement, Jun 28, 12:43 AM CDT, 4 hours 2 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
1235 AM CDT SAT JUN 28 1986

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTH CENTRAL
   SOUTH DAKOTA UNTIL 400 AM CDT...

AT 1230 AM CDT...SCATTERED INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN
CONTINUED OVER PARTS OF NORTHEAST SOUTH DAKOTA.

THESE STORMS WERE MOSTLY NORTHEAST OF A LINE FROM BROOKINGS TO ROSCOE
WITH THE HEAVIEST STORMS LOCATED 10 MILES SOUTHWEST OF ABERDEEN AND
5 MILES SOUTH OF CLEAR LAKE.

MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR.

ELSEWHERE...WIDELY SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED OVER
PARTS OF SOUTHEAST AND SOUTH CENTRAL SOUTH DAKOTA.
MOVEMENT WAS SOUTHrEAST AT 30 MILES AN HOUR.
PFEIFFER
Special weather statement, Jun 28, 1:49 AM CDT, 2 hours 56 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
145 AM CDT SAT JUN 28 1986

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR
NORTH CENTRAL SOUTH DAKOTA UNTIL 400 AM CDT...

AT 135 AM CDT...SCATTERED INTENSE THUNDERSTORMS WITH
VERY HEAVY RAIN CONTINUED OVER PARTS OF NORTHEASTERN
SOUTH DAKOTA.  SCATTERED INTENSE THUNDERSTORMS WITH VERY
HEAVY RAIN HAD DEVELOPED IN EXTREME SOUTHWESTERN MINNESOTA.

IN SOUTH DAKOTA..THE STRONGEST THUNDERSTORM WAS 35 MILES
NORTHWEST OF WATERTOWN..NEAR BRADLEY.

IN MINNESOTA..THE STRONGEST THUNDERSTORMS WERE BETWEEN
PIPESTONE AND WORTHINGTON.

OTHERWISE..SCATTERED THUNDERSTORMS WERE OCCURING NORTH
AND EAST OF A LINE FROM ABERDEEN TO SIOUX FALLS.

ELSEWHERE..NUMEROUS THUNDERSTORMS..SOME WITH HEAVY RAIN..
WERE OCCURING IN CENTRAL SOUTH DAKOTA.

THESE THUNDERSTORMS WERE IN A 75 MILE WIDE AREA
FROM 40 MILES WEST OF PIERRE TO 30 MILES SOUTHEAST
OF WINNER.

ALL MOVEMENT WAS EAST AT 40 MILES AN HOUR.

KRAUSE/PFEIFFER
Special weather statement, Jun 28, 2:51 AM CDT, 1 hour 54 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
250 AM CDT SAT JUN 28 1986

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR
NORTH CENTRAL SOUTH DAKOTA UNTIL 400 AM CDT...

AT 235 AM CDT...AN INTENSE THUNDERSTORM WITH VERY HEAVY
RAIN CONTINUED IN EAST CENTRAL SOUTH DAKOTA.  THIS STORM
WAS 20 MILES SOUTH OF WATERTOWN.  IT IS CAPABLE OF PRODUCING
HAIL..STRONG GUSTY WINDS..AND VERY HEAVY RAINS.

OTHERWISE..AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN WAS
ALSO IN EXTREME SOUTHEASTERN NORTH DAKOTA.  THIS STORM WAS
20 MILES NORTHWEST OF FORBES..OR 50 MILES NORTHWEST OF ABERDEEN.
IT WILL MOVE INTO NORTHERN BROWN COUNTY BY 330 AM CDT.

ALSO..THUNDERSTORMS WITH VERY HEAVY RAIN WERE IN SOUTH CENTRAL
SOUTH DAKOTA.  THE STRONGEST STORMS WERE ALONG INTERSTATE 90..
FROM CHAMBERLAIN TO MURDO.

ALSO..SCATTERED THUNDERSTORMS WITH HEAVY RAIN ALSO EXTENDED
INTO SOUTHWESTERN MINNESOTA AND EXTREME NORTHWESTERN IOWA.

ALL MOVEMENT WAS SOUTHEAST AT 40 MILES AN HOUR.

KRAUSE/PFEIFFER
Special weather statement, Jun 28, 3:53 AM CDT, 52 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
350 AM CDT SAT JUN 28 1986

AT 335 AM CDT...AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN
WAS IN EAST CENTRAL SOUTH DAKOTA.  THIS STORM WAS IN SOUTHERN
BROOKINGS AND NORTHERN MOODY COUNTIES.  IT WAS FROM 15 MILES
WEST OF BROOKINGS TO 10 MILES SOUTHEAST OF BROOKINGS.
THIS STORM IS CAPABLE OF PRODUCING HAIL..DAMAGING WINDS..
AND VERY HEAVY RAINS.  THESE THUNDERSTORMS ALSO EXTENDED INTO
SOUTHWESTERN MINNESOTA..WHERE THE STRONGEST STORMS WERE JUST
NORTH AND EAST OF PIPESTONE.

OTHERWISE..AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN WAS
IN SOUTH CENTRAL SOUTH DAKOTA.  THIS STORM WAS FROM JUST NORTH
OF WINNER TO JUST SOUTH OF CHAMBERLAIN.  IT IS ALSO CAPABLE
OF PRODUCING HAIL..STRONG WINDS..AND VERY HEAVY RAINS.

ELSEWHERE..THUNDERSTORMS WITH VERY HEAVY RAIN WERE IN
NORTHEASTERN SOUTH DAKOTA..AND EXTENDED INTO SOUTHEASTERN
NORTH DAKOTA.  THESE THUNDERSTORMS WERE NORTHEAST OF A LINE
FROM WATERTOWN TO ABERDEEN.

ALL MOVEMENT WAS SOUTHEAST AT 40 MILES AN HOUR.

KRAUSE/PFEIFFER

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 28, 3:51 AM CDTSevere Thunderstorm WarningFSDPipestone, Rock69 min
Jun 28, 4:45 AM CDTSevere Thunderstorm WarningFSDRock60 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.