Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 39, NWS Twin Cities, MN

May 29, 1989Anoka County, Hennepin County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 29, 1989, 3:22 PM CDT for Anoka County, Hennepin County, Minnesota. It was in force for 38 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
May 29, 1989, 3:22 PM CDT (20:22 UTC)
Expired
May 29, 1989, 4:00 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
May 29, 3:40 PM CDTHail 1.75Anoka, 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, 8.4 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 1989-05-29Temperature 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 1989-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
601 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
174 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 292022
SVRMSP
MNC003-053-292100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
322 PM CDT MON MAY 29 1989
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN EAST CENTRAL MINNESOTA
          ...ANOKA...NORTHERN HENNEPIN
 
AT 320 PM...A SEVERE THUNDERSTORM WAS LOCATED NEAR MONTICELLO IN
NORTHERN WRIGHT COUNTY...ABOUT 35 MILES NORTHWEST OF DOWNTOWN
MINNEAPOLIS. AT 308 PM...GOLFBALL SIZE HAIL WAS REPORTED OVER CENTRAL
WRIGTHT COUNTY. MOVEMENT WAS TO THE EAST AT 45 TO 55 MPH. CITIES
INCLUDED IN THIS WARNING ARE ELK RIVER ANOKA AND MAPLE GROVE.
 
 
WHEN THUNDERSTORMS ARE OCCURRING..MOVE INSIDE A STRONG BUILDING
DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES OR ELECTRICAL
APPLIANCES UNLESS IN AN EMERGENCY. REMEMBER SEVERE THUNDERSTORMS
CAN AND OCCASIONALLY DO PRODUCE TORNADOS WITH LITTLE OR NO WARNING.
PAULSON

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 11:48 AM CDTSevere Thunderstorm WarningMPXMorrison, Todd17 min
May 29, 12:13 PM CDTSevere Thunderstorm WarningMPXPope, Stearns62 min
May 29, 12:13 PM CDTSevere Thunderstorm WarningMPXTodd62 min
May 29, 12:37 PM CDTSevere Thunderstorm WarningMPXMille Lacs28 min
May 29, 12:37 PM CDTSevere Thunderstorm WarningMPXMorrison68 min
May 29, 1:06 PM CDTSevere Thunderstorm WarningMPXBenton69 min
May 29, 1:44 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Sibley46 min
May 29, 2:18 PM CDTSevere Thunderstorm WarningMPXHennepin27 min
May 29, 2:29 PM CDTSevere Thunderstorm WarningMPXAnoka, Ramsey, Washington61 min
May 29, 3:00 PM CDTSevere Thunderstorm WarningMPXWright30 min
May 29, 3:27 PM CDTSevere Thunderstorm WarningMPXSherburne33 min
May 29, 3:53 PM CDTSevere Thunderstorm WarningMPXChisago, Isanti37 min
May 29, 4:08 PM CDTSevere Thunderstorm WarningMPXWinona37 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.