Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 85, NWS Twin Cities, MN

August 31, 1989Stearns County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 31, 1989, 10:21 AM CDT for Stearns County, Minnesota. It was in force for 54 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
Aug 31, 1989, 10:21 AM CDT (15:21 UTC)
Expired
Aug 31, 1989, 11:15 AM CDT
In force
54 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Stearns 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
Aug 31, 10:34 AM CDTHail 1Stearns, 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, 3.4 hours before the alert went out and 111 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 1989-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 856 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 1989-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 248 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
856 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
599 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
248 m²/s²
0-3 km storm-relative helicity
247 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Aug 31, 9:25 AM CDT, 56 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
925 AM CDT THU AUG 31 1989

..STRONG THUNDERSTORMS PRODUCING WINDS AND LIGHTNING STRIKES ACROSS
  EAST CENTRAL MINNESOTA..

A LINE OF THUNDERSTORMS HAS BEEN PRODUCING STRONG GUSTY WINDS ACROSS
PARTS OF NORTHERN HENNEPIN..ANOKA AND CHISAGO COUNTIES IN AREAS NEAR
AND JUST NORTH OF THE TWIN CITIES AREA WITH THIS LINE BEGINNING TO MOVE
INTO FAR WESTERN SECTIONS OF WISCONSIN.

WINDS IN THE 40 TO 50 MPH RANGE WERE REPORTED IN ANDOVER OF ANOKA
COUNTY AT AROUND 910 AM AS THE SHOWERS AND THUNDERSTORMS MOVED THROUGH
THE AREA.

IT APPEARS THAT THESE WINDS WILL MOVE ACROSS MUCH OF THE NORTHERN AND
CENTRAL PORTIONS OF THE TWIN CITIES METRO INCLUDING THE STATE FAIR BY
10 AM.
<
PERSONS LIVING IN EAST CENTRAL MINNESOTA AS WELL AS ADJACENT AREAS
OF WESTERN WISCONSIN INCLUDING ST CROIX AND POLK COUNTY SHOULD BE
PREPARED FOR THE STRONG GUSTY WINDS MOVING TOWARD THE AREA.'
Special weather statement, Aug 31, 10:02 AM CDT, 19 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
950 AM CDT THU AUG 31 1989

..STRONG THUNDERSTORMS PRODUCING HIGH WINDS ACROSS EASTERN MINNESOTA
  AND WESTERN WISCONSIN..

AT 945 AM CDT..THE LEADING EDGE OF A BAND OF SHOWERS AND THUNDERSTORMS
WITH HIGH WINDS WAS LOCATED ACROSS SCOTT..DAKOTA AND WASHINGTON COUNTIES
OF THE TWIN CITIES METRO AREA AS WELL AS POLK AND BARRON COUNTIES OF
NORTHWEST AND WEST CENTRAL WISCONSIN.

THIS LINE OF ACTIVITY PRODUCED A 47 MPH WIND GUST AT TWIN CITIES
INTERNATIONAL AIRPORT AT 936 AM. SIMILAR WIND GUSTS HAVE BEEN REPORTED
ACROSS OTHER AREAS OF THE TWIN CITIES.

THIS ACTIVITY WAS MOVING EAST SOUTHEAST AT 45 MPH AND WILL BE MOVING
THROUGH SCOTT..DAKOTA AND SOUTHERN WASHINGTON COUNTIES OF THE SOUTHERN
TWIN CITIES AREA AS WELL AS PIERCE..ST CROIX..BARRON AND DUNN COUNTIES
OF WISCONSIN BY AROUND 1030 AM.
<
PERSONS LIVING IN THESE AREAS SHOULD BE PREPAREDi FOR WINDS IN THE
40 TO 50 MPH RANGE AS THIS STORM FRONT MOVES THROUGH.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 10:21 AM CDTSevere Thunderstorm WarningMPXMorrison, Todd39 min
Aug 31, 11:53 AM CDTSevere Thunderstorm WarningMPXPope37 min
Aug 31, 2:39 PM CDTSevere Thunderstorm WarningMPXBenton, Stearns21 min
Aug 31, 2:39 PM CDTSevere Thunderstorm WarningMPXSherburne51 min
Aug 31, 3:18 PM CDTSevere Thunderstorm WarningMPXWright42 min
Aug 31, 3:35 PM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin55 min
Aug 31, 3:55 PM CDTTornado WarningMPXHennepin35 min
Aug 31, 4:08 PM CDTSevere Thunderstorm WarningMPXChisago, Washington67 min
Aug 31, 4:27 PM CDTTornado WarningMPXHennepin33 min
Aug 31, 4:59 PM CDTSevere Thunderstorm WarningMPXHennepin31 min
Aug 31, 4:59 PM CDTSevere Thunderstorm WarningMPXRamsey36 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1989Every severe thunderstorm warning in 1989

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.