Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 36, NWS Twin Cities, MN

June 10, 1986Chippewa County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 10, 1986, 9:21 PM CDT for Chippewa County, Wisconsin. It was in force for 39 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 10, 1986, 9:21 PM CDT (02:21 UTC)
Expired
Jun 10, 1986, 10:00 PM CDT
In force
39 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Chippewa County, WI

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 10, 9:50 PM CDTHail 1.75Chippewa, WI

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, 2.4 hours before the alert went out and 184 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 1986-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 joules per kilogram.LCLLFCEL10008507005003002001001 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 1986-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.193958Sfc1 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
29 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
601 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 110221
SVRMSP
WIC017-110300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
921 PM CDT TUE JUN 10 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1000 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

WEST CENTRAL WISCONSIN...CHIPPEWA

AT 920 PM CDT..RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST AND
NORTHWEST OF EAU CLAIRE WISCONSIN. THE THUNDERSTORM WAS MOVING TO
THE NORTHEAST AT 35 TO 40 MILES AN HOUR.

SOME CITIES IN THE PATH OF THIS SEVERE THUNDERSTORM ARE EAU CLAIRE
..CHIPPEWA FALLS AND JIM FALLS.

REMEMBER SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WINDS..LARGE
HAIL AND FREQUENT LeIGHTNING 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.

WILLIS

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 10, 4:58 PM CDT, 4 hours 23 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
440 PM TUE CDT JUN 10 1986

 ..THUNDERSTORMS PRODUCING HEAVY RAINS OVER EAST CENTRAL MINNESOTA..

THUNDERSTORMS CONTINUED OVER THE NORTHERN SECTIONS OF THE TWIN CITIES
METROPOLITAN AREA..MAINLY OVER CENTRAL AND EASTERN ANOKA COUNTY. THESE
THUNDERSTORMS HAVE BEEN PRODUCING VERY HEAVY RAINFALL IN A SHORT PERIOD
OF TIME AND MAY PRODUCE SOME LOCALIZED FLOODING OF STREETS AND SMALLER
STREAMS. THESE THUNDERSTORMS HAVE ALSO BEEN PRODUCING STRONG AND GUSTY
WINDS IN THESE SAME AREAS.

THE CURRENT MOVEMENT TO THE NORTHEAST AT 30 TO 35 MILES AN HOUR WILL
TAKE THESE THUNDERSTORMS THROUGH NORTHERN WASHINGTON AND SOUTHERN
CHISAGO COUNTIES BY 530 PM AND INTO THE EXTREME WESTERN WISCONSIN
COUNTIES OF POLK AND NORTHERN ST CROIX THROUGH 600PM.

AT THIS TIME NO SEVERE WEATHER HAS BEEN REPORTED BUT STRONG WINDS..
TORRENTIAL RAIN..SMALL HAIL AND FREQUENT LIGHTNING STRIKES ARE LIKELY.

OTHER SHOWERS AND THUNDERSTORMS CONTINUED OVER WIDELY SCATTERED SECTIONS
OF SOUTHERN AND CENTRAL MINNESOTA AS WEL AS NORTHWEST WISCONSIN.

MOVEMENT WAS TO THE EAST NORTHEAST AT 30 MILES AN HOUR.
SWANBERG
Special weather statement, Jun 10, 7:11 PM CDT, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
708 PM TUE CDT JUN 10 1986

 ..STRONG THUNDERSTORMS DEVELOPING OVER SOUTHERN MINNESOTA..

STRONG THUNDERSTORMS HAVE BEEN DEVELOPING RAPIDLY OVER SOUTH CENTRAL
INTO EAST CENTRAL MINNESOTA. AT 655 PM STRONGEST THUNDERSTORMS WERE
LOCATED OVER SOUTHERN AND WESTERN PARTS OF THE TWIN CITIES METROPOLITAN
AREA MAINLY OVER SCOTT..CARVER INTO SOUTHERN HENNEPIN COUNTIES. FUTHER
TO THE SOUTHWEST..OTHER STRONG THUNDERSTORMS WERE LOCATED ALONG AND
NORTH OF THE MINNESOTA RIVER OVER NICOLLET AND WESTERN SIBLEY COUNTIES.

MOVEMENT ON THESE THUNDERSTORMS WAS TO THE EAST NORTHEAST AT 35 TO 40
MILES AN HOUR.

NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE THUNDERSTORMS BUT AT
700 PM MARBLE SIZE HAIL ALONG WITH HEAVY RAIN OCCURRED IN THE SAVAGE
AREA OF NORTHERN SCOTT COUNTY.
INDICATIONS AT THIS TIME WOULD BE FOR THE POSSIBILITY OF SMALL HAIL
..HEAVY RAINS AND SOME LIGHTNING STRIKES AS THESE THUNDERSTORMS
CONTINUE TO MOVE THROUGH SOUTHERN MINNESOTA.

IN WISCONSIN..SCATTERED SHOWERS AND THUNDERSTORMS..SOME OF THEM STILL
RATHER STRONG CONTINUED OVER MAINLY THE NORTHWEST PART OF THE STATE
BETWEEN JHAYWARD AND EAU CLAIRE.

A DECREASE IN THUNDERSTORM INTENSITY HAD OCCURRED SINCE 540 PM.
MOVEMENT WAS NORTHEAST AT 35 TO 40 MILES AN HOUR.
SWANBERG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 7:48 PM CDTSevere Thunderstorm WarningMPXSaint Croix42 min
Jun 10, 10:01 PM CDTSevere Thunderstorm WarningMPXChippewa, Dunn, Eau Claire44 min
Jun 10, 10:01 PM CDTSevere Thunderstorm WarningMPXPepin44 min
Jun 10, 10:43 PM CDTSevere Thunderstorm WarningMPXEau Claire17 min
Jun 11, 3:25 PM CDTSevere Thunderstorm WarningMPXSaint Croix35 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 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.