Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 51, NWS Twin Cities, MN

June 17, 1986McLeod County, Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 1986, 6:25 PM CDT for McLeod County, Sibley County, Minnesota. It was in force for 50 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 17, 1986, 6:25 PM CDT (23:25 UTC)
Expired
Jun 17, 1986, 7:15 PM CDT
In force
50 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties McLeod County, MN, Sibley 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 17, 6:47 PM CDTHail 3Sibley, 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, 11.4 hours before the alert went out and 54 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 12:00Z on 1986-06-17Temperature 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 12:00Z on 1986-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
1303 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
98 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 172325
SVRMSP
MNC085-143-180015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
625 PM CDT TUE JUN 17 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

CENTRAL MINNESOTA...MCLEOD AND SIBLEY

AT 615 PM CDT NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM 45 MILES WEST OF THE TWIN CITIES NEAR GLENCOE IN
MCLEOD COUNTY. THIS THUNDERSTORM IS MOVING SOUTHEAST AT 35 MILES
AN HOUR. OTHER STRONG THUNDERSTORMS WERE LOCATED NEAR HUTCHINSON
IN NORTHEST MCLEOD COUNTY AND NEAR ARLINGTON IN SIBLEY COUNTY.

HAIL AROUND MARBLE SIZE WAS REPORTED NEAR THE MCLEOD/SIBLEY COUNTY
LINE.

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, Jun 17, 3:47 PM CDT, 2 hours 38 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS, MN
245 PM CDT TUE JUN 17 1986

...  SEVERE THUNDERSTORM WARNING FOR EASTERN GRANT..DOUGLAS..AND POPE
     COUNTIES OF WEST CENTRAL MINNESOTA UNTIL 445 PM  ...

AT 345 PM CDT THUNDERSTORMS WERE RACING THROUGH PARTS OF EAST CENTRAL
MINNESOTA..ABOUT 120 TO 150 MILES NORTHWEST OF THE TWIN CITIES..OR JUST
WEST AND NORTHWEST OF ALEXANDRIA. A REPORT OF 3/4 INCH HAIL AT
ELBOW LAKE MINNESOTA..ABOUT 30 MILES NORTHWEST OF ALEXANDRIA..HAS
CAUSED A SEVERE THUNDERSTORM WARNING TO BE ISSUED FOR EASTERN GRANT..
POPE AND DOUGLAS COUNTIES OF MINNESOTA. THIS INCLUDES THE CITIES OF
ALEXANDRIA AND GLENWOOD.

OTHER SHOWERS =AND THUNDERSTORMS WERE ALSO MOVING THROUGH OTTERTAIL
COUNTY..AND WILL PROBABLY PASS NORTH OF ALEXANDRIA. THESE STORMS WERE
MOVING SOUTHEAST AT 30 TO 40 MILES AN HOUR.

 R.J. KESSLER
Special weather statement, Jun 17, 3:49 PM CDT, 2 hours 36 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS, MN
245 PM CDT TUE JUN 17 1986

...  SEVERE THUNDERSTORM WARNING FOR EASTERN GRANT..DOUGLAS..AND POPE
     COUNTIES OF WEST CENTRAL MINNESOTA UNTIL 445 PM  ...

AT 345 PM CDT THUNDERSTORMS WERE RACING THROUGH PARTS OF WEST CENTRAL
MINNESOTA..ABOUT 120 TO 150 MILES NORTHWEST OF THE TWIN CITIES..OR JUST
WEST AND NORTHWEST OF ALEXANDRIA. A REPORT OF 3/4 INCH HAIL AT
ELBOW LAKE MINNESOTA..ABOUT 30 MILES NORTHWEST OF ALEXANDRIA..HAS
CAUSED A SEVERE THUNDERSTORM WARNING TO BE ISSUED FOR EASTERN GRANT..
POPE AND DOUGLAS COUNTIES OF MINNESOTA. THIS INCLUDES THE CITIES OF
ALEXANDRIA AND GLENWOOD.

OTHER SHOWERS AND T?HUNDERSTORMS WERE ALSO MOVING THROUGH OTTERTAIL
COUNTY..AND WILL PROBABLY PASS NORTH OF ALEXANDRIA. THESE STORMS WERE
MOVING SOUTHEAST AT 30 TO 40 MILES AN HOUR.

 R.J. KESSLER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 3:50 PM CDTSevere Thunderstorm WarningMPXPope55 min
Jun 17, 4:45 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Pope, Stearns60 min
Jun 17, 5:18 PM CDTSevere Thunderstorm WarningMPXMcLeod, Renville, Sibley42 min
Jun 17, 5:45 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Pope, Stearns60 min
Jun 17, 5:45 PM CDTSevere Thunderstorm WarningMPXMeeker60 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.