Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 71, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 4, 1989, 8:32 PM CDT for Mower County, Minnesota. It was in force for 43 min.
The area
The counties it named.
The facts
- Issued
- Aug 4, 1989, 8:32 PM CDT (01:32 UTC)
- Expired
- Aug 4, 1989, 9:15 PM CDT
- In force
- 43 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 00:00Z, 1.5 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.
- Mixed-layer CAPE
- 4 J/kg
- Mixed-layer CIN
- -212 J/kg
- Mixed-layer LCL
- 3541 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KRST 050132
SVRRST
MNC099-050215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
832 PM CDT FRI AUG 4 1989
THE NATIONAL WEATHER SERVICE IN ROCHESTER HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST MINNESOTA
...MOWER
AT 825 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES EAST
OF AUSTIN MOVING TO THE EAST AT 25 MILES AN HOUR TOWARD GRAND MEADOW.
ALSO...AT 815 PM CDT...THE AUSTIN SHERIFF REPORTED MARBLE SIZE HAIL
AND VERY HEAVY RAIN.
THIS WARNING INCLUDES THE CITY OF GRAND MEADOW.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAED.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 4, 6:09 PM CDT, 2 hours 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 600 PM CDT FRI AUG 4 1989 ...SEVERE THUNDERSTORM WATCH BEING CLEARED FOR DAKOTA COUNTY... STRONG THUNDERSTORMS CONTINUE OVER PORTIONS OF SOUTH CENTRAL AND SOUTHEAST MINNESOTA WHERE SEVERE THUNDERSTORM WATCH 656 WILL REMAIN IN EFFECT. THIS AREA OF SEVERE WEATHER HAS SLOWLY SAGGED SOUTHWARD DURING THER PAST SEVERAL HOURS AND IS PROJECTED TO CONTINUE THIS TREND. THESE IMPROVING CONDITIONS HAVE PROMPTED THE TWIN CITIES FORECAST OFFICE TO CLEAR THOSE PORTIONS OF THE SOUTHERN METROPOLITIAN AREA FROM SEVERE THUNDERSTORM WATCH 656. RND
Special weather statement, Aug 4, 7:11 PM CDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST. PAUL MN 705 PM CDT FRI AUG 4 1989 ...NORTHERN PORTIONS OF SEVERE THUNDERSTORM WATCH 656 BEING CLEARED... SEVERE WEATHER CONTINUES TO MOVE SOUTHWARD WITH THE BEST FOCUS REMAINING OVER EXTREME SOUTHEAST AND SOUTH CENTRAL MINNESOTA. AS OF 700 PM CDT THIS FRIDAY EVENING THE FOLLOWING COUNTIES HAVE BEEN CLEARED FROM SEVERE THUNDERSTORM WATCH 656..WABASHA..GOODHUE..RICE AND LESEUR. THE .REMAINDER OF SOUTH CENTRAL AND SOUTHEAST MINNESOTA WILL REMAIN UNDER THE WATCH UNTIL 1100 PM CDT THIS FRIDAY EVENING UNLESS CLEARED. 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; the sounding from the Mesonet's radiosonde archive.