Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 85, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 31, 1989, 10:21 AM CDT for Stearns County, Minnesota. It was in force for 54 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
- Aug 31, 1989, 10:21 AM CDT (15:21 UTC)
- Expired
- Aug 31, 1989, 11:15 AM CDT
- In force
- 54 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Stearns 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 |
|---|---|---|---|
| Aug 31, 10:34 AM CDT | Hail 1 | Stearns, 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 12:00Z, 3.4 hours before the alert went out and 111 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
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 31, 9:25 AM CDT, 56 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 925 AM CDT THU AUG 31 1989 ..STRONG THUNDERSTORMS PRODUCING WINDS AND LIGHTNING STRIKES ACROSS EAST CENTRAL MINNESOTA.. A LINE OF THUNDERSTORMS HAS BEEN PRODUCING STRONG GUSTY WINDS ACROSS PARTS OF NORTHERN HENNEPIN..ANOKA AND CHISAGO COUNTIES IN AREAS NEAR AND JUST NORTH OF THE TWIN CITIES AREA WITH THIS LINE BEGINNING TO MOVE INTO FAR WESTERN SECTIONS OF WISCONSIN. WINDS IN THE 40 TO 50 MPH RANGE WERE REPORTED IN ANDOVER OF ANOKA COUNTY AT AROUND 910 AM AS THE SHOWERS AND THUNDERSTORMS MOVED THROUGH THE AREA. IT APPEARS THAT THESE WINDS WILL MOVE ACROSS MUCH OF THE NORTHERN AND CENTRAL PORTIONS OF THE TWIN CITIES METRO INCLUDING THE STATE FAIR BY 10 AM. < PERSONS LIVING IN EAST CENTRAL MINNESOTA AS WELL AS ADJACENT AREAS OF WESTERN WISCONSIN INCLUDING ST CROIX AND POLK COUNTY SHOULD BE PREPARED FOR THE STRONG GUSTY WINDS MOVING TOWARD THE AREA.'
Special weather statement, Aug 31, 10:02 AM CDT, 19 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 950 AM CDT THU AUG 31 1989 ..STRONG THUNDERSTORMS PRODUCING HIGH WINDS ACROSS EASTERN MINNESOTA AND WESTERN WISCONSIN.. AT 945 AM CDT..THE LEADING EDGE OF A BAND OF SHOWERS AND THUNDERSTORMS WITH HIGH WINDS WAS LOCATED ACROSS SCOTT..DAKOTA AND WASHINGTON COUNTIES OF THE TWIN CITIES METRO AREA AS WELL AS POLK AND BARRON COUNTIES OF NORTHWEST AND WEST CENTRAL WISCONSIN. THIS LINE OF ACTIVITY PRODUCED A 47 MPH WIND GUST AT TWIN CITIES INTERNATIONAL AIRPORT AT 936 AM. SIMILAR WIND GUSTS HAVE BEEN REPORTED ACROSS OTHER AREAS OF THE TWIN CITIES. THIS ACTIVITY WAS MOVING EAST SOUTHEAST AT 45 MPH AND WILL BE MOVING THROUGH SCOTT..DAKOTA AND SOUTHERN WASHINGTON COUNTIES OF THE SOUTHERN TWIN CITIES AREA AS WELL AS PIERCE..ST CROIX..BARRON AND DUNN COUNTIES OF WISCONSIN BY AROUND 1030 AM. < PERSONS LIVING IN THESE AREAS SHOULD BE PREPAREDi FOR WINDS IN THE 40 TO 50 MPH RANGE AS THIS STORM FRONT MOVES THROUGH.
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, 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, 4:08 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Washington | 67 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 |
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.