Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 22, NWS Twin Cities, MN

June 28, 1987Anoka County, Hennepin County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 28, 1987, 5:02 PM CDT for Anoka County, Hennepin County, Minnesota. It was in force for 38 min. 3 reports 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, 1987, 5:02 PM CDT (22:02 UTC)
Expired
Jun 28, 1987, 5:40 PM CDT
In force
38 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Anoka County, MN, Hennepin 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, 5:07 PM CDTThunderstorm Wind 0Anoka, MN
Jun 28, 5:10 PM CDTThunderstorm Wind 0Hennepin, MN
Jun 28, 5:29 PM CDTHail 1.5Hennepin, 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, 10.0 hours before the alert went out and 37 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 1987-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 139 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 12:00Z on 1987-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
139 J/kg
Mixed-layer CIN
-151 J/kg
Mixed-layer LCL
1385 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
126 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 282202
SVRMSP
MNC053-003-282240-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
502 PM CDT SUN JUN 28 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 540 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

EAST CENTRAL MINNESOTA...
 NORTHERN HENNEPIN AND WESTERN ANOKA


AT 450 PM RADAR INDICATED TWO SEVERE THUINDERSTORMS..ONE NEAR
ELK RIVER OR 30 MILES NORTHWEST OF DOWNTOWN MINNEAPOLIS..ANOTHER
NEAR MONTROSE ABOUT 35 MILES WEST OF DOWNTOWN MINNEAPOLIS.
GREATER THAN 50 MILE AN HOUR WINDS AND PEA SIZED HAIL WERE
REPORTED FROM BUFFALO MINNESOTA. THESE STORMS WERE MOVING EAST AT
ABOUT 35 MILES AN HOUR AND SHOULD BE MOVING TOWARD THE CITIES OF
ANOKA..ROCKFORD..AND MOUND INCLUDING LAKE MINNETONKA.

REMEMBER SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60
MPH..DESTRUCTIVE HAIL..DEADLY LIGHTNING AND VERY HEAVY RAIN. 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.

TND

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 28, 3:23 PM CDT, 1 hour 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST. CLOUD MN
320 PM CDT SUN JUN 28 1987

...SEVERE THUNDERSTORM WATCH UNTIL 900 PM CDT FOR PORTIONS OF
SOUTHERN MINNESOTA...

AT 310 PM CDT STRONG THUNDERSTORMS WERE LOCATED IN LAC QUI PARLE AND
YELLOW MEDICINE AND CHIPPEWA COUNTIES OF SOUTHWEST MINNESOTA.

PEA SIZE HAIL AND BRIEF HEAVY RAIN WAS REPORTED AT DAWSON IN LAC QUI
PARLE COUNTY...50 MILES SOUTHWEST OF WILLMAR...AT 300 PM CDT BY THE
SHERIFF DEPARTMENT OF CHIPPEWA COUNTY.

RADAR SHOWED THESE STORMS MOVING EAST AT 30 MILES AN HOUR.

BE PREPARED TO MOVE TO A PLACE OF SAFETY IF SEVERE WEATHER MOVES INTO
YOUR AREA AND LISTEN FOR FURTHER STATEMENTS OR WARNINGS.

FRASER
Special weather statement, Jun 28, 4:03 PM CDT, 59 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST. CLOUD MN
400 PM CDT SUN JUN 28 1987

...SEVERE THUNDERSTORM WATCH UNTIL 900 PM CDT FOR PORTIONS OF
SOUTHERN MINNESOTA...

AT 355 PM CDT STRONG THUNDERSTORMS WERE LOCATED IN SOUTHERN CHIPPEWA
AND SOUTHERN KANDIYOHI COUNTIES OF SOUTHWEST MINNESOTA.

AT 328 PM CDT PEA SIZE HAIL AND HEAVY RAIN WAS REPORTED 8 MILES NORTH
0F CLARKFIELD IN YELLOW MEDICINE COUNTY...40 MILES SOUTHWEST OF
WILLMAR. PEA SIZE HAIL ALSO REPORTED AT PRINSBURG IN KANDIYOHI
COUNTY...13 MILES SOUTHWEST OF WILLMAR...AT 333 PM CDT.

RADAR SHOWED THESE STORMS MOVING EAST AT 30 MILES AN HOUR.

BE PREPARED TO MOVE TO A PLACE OF SAFETY IF SEVERE WEATHER MOVES INTO
YOUR AREA AND LISTEN FOR FURTHER STATEMENTS OR WARNINGS.

RUBIN/FRASER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 4:25 PM CDTTornado WarningMPXLac qui Parle, Yellow Medicine35 min
Jun 28, 5:12 PM CDTTornado WarningMPXAnoka, Hennepin, Ramsey28 min
Jun 28, 5:43 PM CDTTornado WarningMPXHennepin27 min
Jun 28, 5:43 PM CDTTornado WarningMPXAnoka, Dakota, Ramsey, Washington27 min
Jun 28, 6:01 PM CDTSevere Thunderstorm WarningMPXScott44 min
Jun 28, 6:18 PM CDTSevere Thunderstorm WarningMPXDakota57 min
Jun 28, 6:34 PM CDTSevere Thunderstorm WarningMPXGoodhue, Wabasha56 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1987Every severe thunderstorm warning in 1987

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.