Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 72, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 13, 1989, 7:03 PM CDT for Chisago County, Isanti County, Minnesota. It was in force for 42 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 13, 1989, 7:03 PM CDT (00:03 UTC)
- Expired
- Aug 13, 1989, 7:45 PM CDT
- In force
- 42 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Chisago County, MN, Isanti 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 13, 7:50 PM CDT | Hail 1 | Isanti, 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, 0.1 hours before the alert went out and 85 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
- 886 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1848 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 57 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 KMSP 140005
SVRMSP
MNC025-059-140045-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
703 PM CDT SUN AUG 13 1989
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 745 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN EAST CENTRAL MINNESOTA
...SOUTHERN CHISAGO...SOUTHEASTERN ISANTI
AT 655 PM CDT THIS SUNDAY..THE PUBLIC REPORTED 1 INCH HAIL AT
CAMBRIDGE IN ISANTI COUNTY..ABOUT 30 MILES NORTH OF DOWNTOWN
MINNEAPOLIS. WEATHER RADAR INDICATES SOUTHEAST MOVEMENT ON THIS SEVERE
THUNDERSTORM AT 15 MILES PER HOUR WHICH WOULD CARRY IT TO CENTER CITY
AND TAYLOR FALLS IN SOUTHEAST CHISAGO COUNTY BY 740 PM CDT
THIS SUNDAY EVENING.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE. REMEMBER SEVERE THUNDERSTORMS
CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE ADVANCE 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 TH8E LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.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 13, 5:25 PM CDT, 1 hour 38 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MN 515 PM CDT SUN AUG 13 1989 ...SEVERE THUNDERSTORM WATCH FOR WEST CENTRAL MINNESOTA TILL 10PM... ...THUNDERSTORMS DEVELOPING OVER CENTRAL MINNESOTA... AT 500 PM CDT RADAR SHOWED AN AREA OF THUNDERSTORMS DEVELOPING FROM SOUTH OF DULUTH THROUGH THE ST CLOUD AREA. SOME OF THESE STORMS HAVE PRODUCED BRIEF HEAVY RAINS...SMALL HAIL AND FREQUENT LIGHTNING. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 15 TO 25 MPH. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR WEST CENTRAL MINNESOTA UNTIL 10 PM CDT. NO SEVERE WEATHER HAS BEEN REPORTED IN MINNESOTA... HOWEVER...SEVERE THUNDERSTORMS HAVE BEEN OCCURRING IN EASTERN SOUTH DAKOTA AND ARE MOVING TOWARDS WEST CENTRAL MINNESOTA. YOUNG
Special weather statement, Aug 13, 6:16 PM CDT, 47 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 615 PM CDT SUN AUG 13 1989 ...THUNDERSTORMS CONTINUE TO DEVELOP OVER CENTRAL AND EAST CENTRAL MINNESOTA...AND MOVING INTO WEST CENTRAL WISCONSIN... AT 610 PM CDT...THE LEADING EDGE OF A A LINE OF SHOWERS AND THUNDERSTORMS EXTENDED FROM 25 MILES SOUTH OF ST. CLOUD...TO JUST WEST OF GRANTSBURG WISCONSIN...AND ON TO 30 MILES EAST OF GRANTSBURG. THE LEADING EDGE ACTUALLY STRETCHED FROM NEAR ANNANDALE...TO NEAR CAMBRIDGE...TO JUST SOUTHEAST OF PINE CITY...ON TO NEAR SHELL LAKE WISCONSIN. SOME OF THESE STORMS MAY PRODUCE HEAVY RAINS...SMALL HAIL...GUSTY WIND...AND FREQUENT LIGHTNING STRIKES. MOVEMENT OF THE STORMS WAS SOUTHEAST AT 15 MILES AN HOUR. PEOPLE IN THESE AREAS SHOULD GET INSIDE...DUE TO THE FREQUENT LIGHTNING AND GUSTY WINDS. ANY ONE OF THESE STORMS MAY PRODUCE BRIEF WIND GUSTS TO 50 MILES AN HOUR...SO LISTEN FOR LATER STATEMENTS. TDK
Special weather statement, Aug 13, 6:42 PM CDT, 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MN 630 PM CDT SUN AUG 13 1989 ...SEVERE THUNDERSTORM WATCH FOR WEST CENTRAL MINNESOTA TILL 10PM... ...THUNDERSTORMS CONTINUE TO DEVELOP OVER CENTRAL MINNESOTA... AT 630 PM CDT RADAR SHOWED AN AREA OF THUNDERSTORMS OVER CENTRAL MINNESOTA WITH THE STRONGEST STORMS IN A LINE EXTENDING FROM PINE CITY TO ST CLOUD TO ALEXANDRIA. THESE STRONG THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT 15 MPH. BRIEF HEAVY RAINS...SMALL HAIL AND WIND GUSTS TO 40 MPH HAVE BEEN REPORTED WITH THESE STORMS. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR WEST CENTRAL MINNESOTA UNTIL 10 PM CDT. NO SEVERE WEATHER HAS BEEN REPORTED IN MINNESOTA... HOWEVER...SEVERE THUNDERSTORMS CONTINUE TO DEVELOP IN EASTERN SOUTH DAKOTA. THESE SEVERE THUNDERSTORMS WERE MOVING TO THE SOUTHEAST AT 25 MPH AND HAVE NOT YET MOVED INTO MINNESOTA. YOUNG
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 8:05 PM CDT | Severe Thunderstorm Warning | MPX | Wright | 40 min |
| Aug 13, 8:19 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin | 46 min |
| Aug 13, 9:01 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 59 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.