Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 3, NWS Twin Cities, MN

April 24, 1989Fillmore County, Houston County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 24, 1989, 9:30 PM CDT for Fillmore County, Houston County, Minnesota. It was in force for 30 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
Apr 24, 1989, 9:30 PM CDT (02:30 UTC)
Expired
Apr 24, 1989, 10:00 PM CDT
In force
30 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Fillmore County, MN, Houston 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
Apr 24, 9:40 PM CDTHail 0.75Houston, 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 00:00Z, 2.5 hours before the alert went out and 195 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 00:00Z on 1989-04-25Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 1989-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.1939Sfc1 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
1673 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRST 250230
SVRRST
MNC045-055-250300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ROCHESTER MN
930 PM CDT MON APR 24 1989

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1000 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE SOUTHEAST PART OF MINNESOTA
      SOUTHERN FILLMORE...HOUSTON

THIS WARNING INCLUDES THE TOWNS OF CALEDONIA AND HARMONY.

AT 920 PM CDT RADAR INDICATED SEVERE THUNDERSTORMS FROM NEAR HARMONY
...35 MILES SOUTHEAST OF ROCHESTER...TO SHELDON...ABOUT 18 MILES
SOUTHWEST OF LA CROSSE WISCONSIN.

MOVEMENT WAS EAST SOUTHEAST AT 20 MILES AN HOUR.

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.

DWE

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, Apr 24, 4:41 PM CDT, 4 hours 49 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
440 PM CDT MON APR 24 1989

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 800 PM CDT FOR
   A SMALL PART OF SOUTHERN MINNESOTA...

AT 425 PM...THUNDERSTORMS WERE OCCURRING OVER EXTREME SOUTH CENTRAL
AND SOUTHEAST MINNESOTA.  THESE THUNDERSTORMS WERE MOVING NORTHEAST
AND SHOULD PASS BETWEEN OWATONNA AND ROCHESTER.  A RAIN AREA EXTENDED
FROM BLUE EARTH EA)ST TO ROCHESTER...THE NORTHERN EDGE WAS FAIRBAULT.

MOVEMENT OF THE THUNDERSTORMS WAS TO THE NORTHEAST AT 23 MILES AN HOUR.
DME
Special weather statement, Apr 24, 5:45 PM CDT, 3 hours 45 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
540 PM CDT MON APR 24 1989

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 800 PM CDT FOR
   A SMALL PART OF SOUTHERN MINNESOTA...

AT 525 PM...THUNDERSTORMS WERE OCCURRING OVER SOUTH CENTRAL AND
AND SOUTHEAST MINNESOTA.  THESE THUNDERSTORMS WERE SOUTH OF OWATONNA
AND WEST OF ROCHESTER.  A RAIN AREA EXTENDED FROM BLUE EARTH EAST
TO ABOUT 20 TO 30 MILES W~EST OF THE MISSISSIPPI RIVER.

MOVEMENT OF THE THUNDERSTORMS WAS TO THE NORTHEAST AT 23 MILES AN HOUR.
DME
Special weather statement, Apr 24, 5:56 PM CDT, 3 hours 34 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNESPOLIS/ST. PAUL MINNESOTA
550 PM CDT MON APR 24  1989

THE SEVERE STORMS FORECAST CENTER IN KANSAS CITY HAS CAMCELLED SEVERE
THUNDERSTORM WATCH NUMBER 106 WHICH INCLUDED PORTIONS OF EXTREME
SOUTHERN MINNESOTA. THIS WATCH WAS ORIGINALLY ISSUED AT 237 PM CDT
THIS MONDAY AFTERNOON.

THUNDERSTORMS WILL CONTINUE OVER PORTIONS OF EXTREME SOUTHEAST MINNESOTA
FOR THE BALANCE OF THE EARLY EVENING HOURS AND PERIODS OF HEAVY RAINFALL
..SMALL HAIL AND BRIEF GUSTY WINDS AS THESE THUNDERSTORMS EXIT INTO
SOUTHWEST AND WEST CENTRAL WISCONSIN.
RND

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.