Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 111, NWS Twin Cities, MN

July 19, 1986Isanti County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 19, 1986, 12:42 AM CDT for Isanti County, Minnesota. It was in force for 48 min.

The area

The counties it named.

The facts

Issued: Jul 19, 1986, 12:42 AM CDT (05:42 UTC)
Expired: Jul 19, 1986, 1:30 AM CDT
In force: 48 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Isanti 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 00:00Z, 5.7 hours before the alert went out and 83 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: 235 J/kg
Mixed-layer CIN: -264 J/kg
Mixed-layer LCL: 1882 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 190542
SVRMSP
MNC171-059-093-009-095-141-190630-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1242 AM CDT SAT JUL 19 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 130 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

CENTRAL MINNESOTA...WRIGHT...WESTERN ISANTI...EASTERN MEEKER...
 BENTON...MILLE LACS AND SHERBURNE

AT 1240 AM SEVERAL SEVERE THUNDERSTORMS WERE INDICATED BY RADAR
IN EASTERN BENTON COUNTY AND WESTERN SHERBURNE COUNTY OF CENTRAL
MINNESOTA.  THESE THUNDERSTORMS WERE MOVING TO THE EAST AT 35
MILES AN HOUR.  CITIES INCLUDED IN THIS WARNING ARE PRINCETON
...ELK RIVER...BUFFALO...BETHEL...KINGSTON...AND FOLEY.

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.

MILLER

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, Jul 18, 7:20 PM CDT, 5 hours 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
720 PM CDT FRI JUL 19 1986.

...SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL MINNESOTA UNTIL 10 PM
CDT...

...SEVERE THUNDERSTORM WARNING FOR CHIPPEWA COUNTY HAS BEEN CANCELED
AT 720 PM CDT.

AT 658 PM CDT WEATHER SPOTTER REPORTED CHICKEN EGG SIZE HAIL IN
EASTERN CHIPPEA COUNTY 15 MILES WEST OF WILLMAR.
RUBIN/DEVOE

Special weather statement, Jul 18, 8:09 PM CDT, 4 hours 33 minutes before

WWUS9 KMKC 190104

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST. PAUL MN
810 PM CDT FRI JUL 18 1986

THE NATIONAL SEVERE STORMS FORECAST CENTER HAS CANCELLED
SEVERE THUNDERSTORM WATCH NUMBER 388 ISSUED AT
143  PM CDT  FOR
     PORTIONS OF EAST CENTRAL AND EASTERN SOUTH DAKOTA
     PORTIONS OF SOUTHWEST AND CENTRAL MINNESOTA

IN ADDITION..SEVERE THUNDERSTORM WATCH NUMBER 391 HAS BEEN
CANCELLED FOR ALL MINNESOTA COUNTIES.

TOGSTAD

Local storm report, Jul 18, 8:41 PM CDT, 4 hours 1 minute before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
730 PM CDT TUE JUL 15 1986

      ...ATTN SELS A MSP...
TIMES IN CDT

450 PM  TORNADO TOUCHDOWN AT 85TH AND NOBLE IN BROOKLYN PARK..HENNEPIN
    COUNTY.   8 HOMES DAMAGED IN BROOKLYN PARK.  TORNADO REMAINED ON THE
    GROUND ABOUT A HALF HOUR FINALLY LIFTING OFF THE GROUND IN SPRING
    LAKE PARK IN SOUTHERN ANOKA COUNTY.  IT APPEARED TO SKIP SEVERAL
    TIMES DURING ITS PATH.  NO DEATHS OR SERIOUS INJURIES HAVE BEEN
    REPORTED TO THE NATIONAL WEATHER SERVICE.  THERE WAS A LOT OF TREE
    DAMAGE AS WELL AS DAMAGE TO POWER LINES.

533PM   ANOTHER BRIEF TOUCHDOWN IN THE BLAINE AREA AT HIGHWAY 65 AND
     99TH AVE.  SOUTHERN ANOKA COUNTY.  NO INJURY OR DAMAGE REPORTED.

     NUMEROUS FUNNEL CLOUDS WERE ALSO REPORTED ACROSS THE NORTHERN
     TWIN CITIES METRO AREA ROUGHLY FROM THE TIME OF THE FIRST
    TORNADO SIGHTING UNTIL AROUND 6PM.

605PM  GOLFBALL HAIL IN SPRING LAKE PARK IN SOUTHERN ANOKA COUNTY

622PM  MARBLE HAIL IN TURTLE LAKE..BARRON COUNTY WISCONSIN

645 PM  POSSIBLE TORNADO NEAR LADYSMITH IN RUSK COUNTY WISCONSIN.
        SOME TREES WERE UPROOTED AS WELL AS LARGE BRACHES RIPPED
        OFF TREE&S.

700 TO 705 PM  DEFINITE FUNNEL..POSSIBLE TORNADO NEAR POSKIN IN BARRON
        COUNTY WISCONSIN.  REPORTED BY THE PUBLIC.

PAULSON

Local storm report, Jul 18, 9:04 PM CDT, 3 hours 38 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
900 PM CDT TUE JUL 15 1986

      ...ATTN SELS A MSP...
TIMES IN CDT

540 PM  GOLF BALL SIZE HAIL IN HUGO..NORTH WASHINGTON COUNTY.

9RICHARDSON

Special weather statement, Jul 18, 10:59 PM CDT, 1 hour 43 minutes before

RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS ST PAUL MN
1045 PM CDT FRI JUL 18 1986

AT 1030 PM...THUNDERSTORMS...WITH HEAVY TO LOCALLY INTENSE RAINFALL..
WERE DEVELOPING ACROSS PARTS OF SOUTHWEST INTO CENTRAL MINNESOTA.  ONE
BAND OF THESE THUNDERSTORMS EXTENDED FROM THE SOUTH DAKOTA BORDER...
BETWEEN ORTONVILLE AND CANBY...TO NORTH OF WILLMAR/ABOUT 40 MILES WEST
OF ST CLOUD.

ANOTHER CLUSTER OF THESE THUNDERSTORMS WAS ABOUT 30 MILES NORTH OF
ALEXANDRIA...IN THE VICINITY OF WADENA.

IN WEST CENTRAL WISCONSIN...A THUNDERSTORM WITH VERY HEAVY RAINS WAS
NORTHEAST OF LA CROSSE...IN THE VICINITY OF BLACK RIVER FALLS.

HAIL...GUSTY WINDS AND DANGEROUS LIGHTNING STRIKES ARE ALSO POSSI~BLE
WITH THESE THUNDERSTORMS.

MOVEMENT WAS TO THE EAST AT 35 MILES AN HOUR.
<
OTHERWISE...SHOWERS AND OCCASIONAL THUNDERSTORMS WERE SCATTERED ACROSS
CENTRAL INTO NORTHERN MINNESOTA...AND OVER WEST CENTRAL WISCONSIN.

DOM

Special weather statement, Jul 18, 11:56 PM CDT, 46 minutes before

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS ST PAUL MN
1145 PM CDT FRI JUL 18 1986

AT 1130 PM...THUNDERSTORMS...WITH HEAVY TO LOCALLY INTENSE RAINFALL..
CONTINUED TO DEVELOP ACROSS PARTS OF SOUTHWEST INTO CENTRAL MINNESOTA.
HAIL...STRONG GUSTY WINDS AND DANGEROUS LIGHTNING STRIKES ARE POSSIBLE
WITH THESE THUNDERSTORMS.

ONE BAND OF THESE THUNDERSTORMS EXTENDED FROM THE SOUTH DAKOTA BORDER...
NEAR CANBY...TO WILLMAR...TO JUST NORTHWEST OF ST CLOUD.

ANOTHER AREA REACHED FROM AROUND BRAINERD ACROSS MILLE LACS LAKE TO JUST
EAST OF THE LAKE.

IN WEST CENTRAL WISCONSIN...A THUNDERSTORM WITH VERY HEAVY RAINS WAS
NORTHEAST OF LA CROSSE...JUST EAST OF BLACK RIVER FALLS.

MOVEMENT WAS TO THE EAST AT 35 MILES AN HOUR.

OTHERWISE...MOSTLY GARDEN VARIETY SHOWERS AND THUNDERSTORMS WERE
SCATTERED ACROSS PARTS OF NORTH AND CENTRAL MINNESOTA...AND...NORTH TO
SOUTH ACROSS WEST WISCONSIN FROM NEAR ASHLAND' THRU EAU CLAIRE TO NEAR
LA CROSSE.
DOM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 7:06 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	54 min
Jul 19, 12:42 AM CDT	Severe Thunderstorm Warning	MPX	Benton, Mille Lacs, Sherburne	48 min
Jul 19, 12:42 AM CDT	Severe Thunderstorm Warning	MPX	Meeker, Wright	48 min
Jul 19, 1:15 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin	60 min
Jul 19, 1:15 AM CDT	Severe Thunderstorm Warning	MPX	Anoka, Isanti	60 min
Jul 19, 1:32 AM CDT	Severe Thunderstorm Warning	MPX	Washington	58 min
Jul 19, 1:32 AM CDT	Severe Thunderstorm Warning	MPX	Chisago	58 min
Jul 19, 1:32 AM CDT	Severe Thunderstorm Warning	MPX	Ramsey	58 min
Jul 19, 2:09 AM CDT	Severe Thunderstorm Warning	MPX	Brown, Nicollet	51 min
Jul 19, 2:51 AM CDT	Severe Thunderstorm Warning	MPX	Le Sueur	54 min
Jul 19, 5:43 AM CDT	Severe Thunderstorm Warning	MPX	Fillmore, Houston, Winona	47 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; the sounding from the Mesonet's radiosonde archive.