Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 91, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 31, 1989, 4:08 PM CDT for Chisago County, Washington County, Minnesota; Polk County, Wisconsin. It was in force for 67 min.
The area
The counties it named.
The facts
- Issued
- Aug 31, 1989, 4:08 PM CDT (21:08 UTC)
- Expired
- Aug 31, 1989, 5:15 PM CDT
- In force
- 67 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Chisago County, MN, Washington County, MN, Polk County, WI
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, 9.1 hours before the alert went out and 86 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
- 856 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 599 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 248 m²/s²
- 0-3 km storm-relative helicity
- 247 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 312111
SVRMSP
MNC025-163-WIC095-312215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
408 PM CDT THU AUG 31 1989
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN EAST CENTRAL MINNESOTA
...SOUTHERN CHISAGO...NORTHERN WASHINGTON
IN WEST CENTRAL WISCONSIN
...WESTERN POLK
AT 405 PM RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS EXTENDING
FROM NORTHCENTRAL HENNIPEN COUNTY NOERHEAST TO NEAR ANOKA IN ANOKA
COUNTY. THE SEVERE THUNDERSTORMS CONTINUED NORTHEAST TO WYOMING IN
CHISAGO COUNTYU AND AMERY IN POLK COUNTY WISCONSIN. THE THUNDERSTORMS
WERE MOVING EAST AT ABOUT 30 MILES AN HOUR. THE CITIES OF
AMERY..TAYLORS FALLS AND WYOMING ARE IN THE PATH OF THESE STORMS.
WINDS OF 50 MILES AN HOUR WERE REPORTED IN THE CITY OF MAPLE GROVE
ABOUT 20 MILES NORTHWEST OF DOWNTOWN MINNESPOLIS AT 406 PM.
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.
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 ROAD.
JHMWhat 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 31, 11:00 AM CDT, 5 hours 8 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1050 AM CDT THU AUG 31 1989 ..SEVERE THUNDERSTORM WARNING IN EFFECT FOR PARTS OF CENTRAL MINNESOTA UNTIL 1115 AM CDT.. A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN STEARNS.. SOUTHWEST MORRISON AND SOUTHEAST TODD COUNTIES UNTIL 1115 AM IN AREAS JUST NORTHWEST OF ST CLOUD. AT 1035 AM CDT..WEATHER RADAR INDICATED A SEVERE THUNDERSTORM CENTERED JUST NORTHWEST OF ALBANY IN EXTREME NORTHERN STEARNS COUNTY. EARLIER THIS STORM PRODUCED GOLFBALL SIZE HAIL IN NORTHERN STEARNS AND SOUTHERN TODD COUNTIES. THIS STORM WAS MOVING EAST AT 30 MILES AN HOUR. ELSEWHERE..SHOWERS AND THUNDERSTORMS REMAINED IN A BAND ACROSS SOUTHEAST MINNESOTA INTO WEST CENTRAL AND NORTHWEST WISCONSIN FROM NEAR HAYWARD.. TO EAU CLAIRE..TO SOUTH OF MINNEAPOLIS NEAR NEW PRAGUE AND NORTHFIELD. AN OVERALL WEAKENING TREND HAD OCCURRED ON THIS ACTIVITY BUT SOME GUSTY WINDS ARE STILL LIKELY AS THIS BAND MOVES TO THE EAST SOUTHEAST AT 40 MILES AN HOUR. FURTHER SOUTH ANOTHER BAND OF SHOWERS AND THUNDERSTORMS WAS MOVING THROUGH FAR SOUTHEAST MINNESOTA INTO WEST CENTRAL WISCONSIN FROM ALONG THE MISSISSIPPI RIVER AT ALMA WISCONSIN TO BETWEEN ROCHESTER AND LA CROSSE. THESE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 35 MILES AN HOUR.
Special weather statement, Aug 31, 11:45 AM CDT, 4 hours 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MN 1143 AM CDT THU AUG 31 1989 ...THUNDERSTORMS INCREASING IN INTENSITY IN CENTRAL MINNESOTA WILL MOVE INTO POPE COUNTY... AT 1135AM CDT THUNDERSTORMS WERE INCREASING IN INTENSITY FROM JUST SOUTH OF ALEXANDRIA TO JUST NORTH OF MORRIS...30 MILES SOUTHWEST OF ALEXANDRIA. THESE STORMS WERE MOVING SOUTHEAST AT 25 MPH AND WIL ENTER POPE COUNTY NEAR CYRUS BY 12 NOON. HAIL...VERY HEAVY RAIN AND STRONG WINDS ARE POSSIBLE WITH THESE STORMS. WDV
Local storm report, Aug 31, 2:03 PM CDT, 2 hours 5 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
200 PM CDT THU AUG 31 1989
...ATTN SELS...
PRELIMINARY STORM DATA REPORT FOR CENTRAL MINNESOTA FOR AUG 31:
1015 AM CDT GOLF BALL HAIL SOUTHERN TODD COUNTY...6 MILES
NORTH OF SAUK CENTRE...40 MILES
NORTHWEST OF ST CLOUD.
1034 AM CDT ONE INCH HAIL STEARNS COUNTY...ST ROSA...
25 MILES NORTHWEST OF ST CLOUD.
1213 PM CDT 3/4 INCH HAIL POPE COUNTY...LOWRY...12 MILES
SOUTH OF ALEXANDRIA.
NISTLERSpecial weather statement, Aug 31, 3:00 PM CDT, 1 hour 8 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 250 PM CDT THU AUG 31 1989 STRONG AND IN SOME CASES SEVERE THUNDERSTORMS HAVE REGENERATED FROM NEAR ST CLOUD TO JUST NORTH OF ANNANDALE ACROSS EASTERN STEARNS AND FAR NORTHERN WRIGHT COUNTY. A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR PARTS OF STEARNS.. SHERBURNE AND BENTON COUNTIES UNTIL 330 PM. AT 245 PM..THUNDERSTORMS EXTENDED FROM NEAR LITCHFIELD AND ANNANDALE TO ST CLOUD AND ON FURTHER EAST TOWARD CAMBRIDGE. THE STORMS WERE MOVING EAST AT 30 MILES AN HOUR BUT THE MOST RECENT DEVELOPMENT HAS BEEN ALONG THE SOUTHWEST PORTION OF THE AREA ACROSS WRIGHT AND MEEKER COUNTIES OR IN ARE[AS NORTHWEST OF MINNEAPOLIS. PERSONS IN EAST CENTRAL MINNESOTA SHOULD KEEP ABREAST OF THIS DEVELOPING WEATHER SITUATION AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 10:21 AM CDT | Severe Thunderstorm Warning | MPX | Morrison, Todd | 39 min |
| Aug 31, 10:21 AM CDT | Severe Thunderstorm Warning | MPX | Stearns | 54 min |
| Aug 31, 11:53 AM CDT | Severe Thunderstorm Warning | MPX | Pope | 37 min |
| Aug 31, 2:39 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Stearns | 21 min |
| Aug 31, 2:39 PM CDT | Severe Thunderstorm Warning | MPX | Sherburne | 51 min |
| Aug 31, 3:18 PM CDT | Severe Thunderstorm Warning | MPX | Wright | 42 min |
| Aug 31, 3:35 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin | 55 min |
| Aug 31, 3:55 PM CDT | Tornado Warning | MPX | Hennepin | 35 min |
| Aug 31, 4:27 PM CDT | Tornado Warning | MPX | Hennepin | 33 min |
| Aug 31, 4:59 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin | 31 min |
| Aug 31, 4:59 PM CDT | Severe Thunderstorm Warning | MPX | Ramsey | 36 min |
| Aug 31, 5:19 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 56 min |
| Aug 31, 5:58 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin | 32 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1989Severe Thunderstorm Warnings in Wisconsin, 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.