Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 3, NWS Twin Cities, MN
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
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 24, 9:40 PM CDT | Hail 0.75 | Houston, 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.
- 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
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.
DWEWhat 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.