Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 50, NWS Twin Cities, MN

May 30, 1989Mower County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 30, 1989, 8:09 AM CDT for Mower County, Minnesota. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
May 30, 1989, 8:09 AM CDT (13:09 UTC)
Expired
May 30, 1989, 9:15 AM CDT
In force
66 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Mower 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 12:00Z, 1.2 hours before the alert went out and 147 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 1989-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 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 1989-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 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
NaN m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
165 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 KRST 301309
SVRRST
MNC043-047-099-301415-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ROCHESTER MN
809 AM CDT TUE MAY 30 1989

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 915 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE SOUTH CENTRAL PART OF MINNESOTA
      EASTERN FARIBAULT...FREEBORN...

   IN THE SOUTHEAST PART OF MINNESOTA
      WESTERN MOWER...

THIS WARNING INCLUDES THE TOWNS OF ALBERT LEA AND AUSTIN.
AT 9 AM A SEVERE THUNDERSTORM WAS LOCATED 30 MILES WEST OF
ALBERT LEA MINNESOTA BETWEEN WINNEBAGO AND WELLS AND MOVING EAST
AT 40 MPH TOWARD ALBERT LEA AND AUSTIN.

IF YOU ARE IN AN AREA THREATENED BY THE STORM...GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN...AND LIGHTNING.

AMANN

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 9:35 PM CDTSevere Thunderstorm WarningMPXGoodhue, Wabasha40 min
May 29, 10:35 PM CDTSevere Thunderstorm WarningMPXWabasha40 min
May 30, 7:22 AM CDTSevere Thunderstorm WarningMPXFaribault, Martin53 min
May 30, 8:09 AM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn66 min
May 30, 8:51 AM CDTTornado WarningMPXHouston39 min
May 30, 9:07 AM CDTSevere Thunderstorm WarningMPXFillmore, Mower53 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; the sounding from the Mesonet's radiosonde archive.