Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 30, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 10, 1987, 2:09 AM CDT for Le Sueur County, Steele County, Waseca County, Minnesota. It was in force for 51 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
- Jul 10, 1987, 2:09 AM CDT (07:09 UTC)
- Expired
- Jul 10, 1987, 3:00 AM CDT
- In force
- 51 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Le Sueur County, MN, Steele County, MN, Waseca 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 |
|---|---|---|---|
| Jul 10, 2:10 AM CDT | Thunderstorm Wind 79 | Waseca, 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, 7.2 hours before the alert went out and 79 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
- 2067 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 114 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 100709
SVRRST
MNC079-147-161-100800-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
209 AM CDT FRI JUL 10 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 300 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH CENTRAL MINNESOTA
...SOUTHERN LE SUEUR...STEELE...WASECA
SOME CITIES IN THE WARNING AREA INCLUDE WASECA... ABOUT 45 MILES WEST
OF ROCHESTER...AND OWATONNA...35 MILES WEST OF ROCHESTER.
AT 210 AM 91 MPH WIND GUSTS WERE REPORTED IN THE CITY OF WASECA.
PERSONS IN THE WARNING AREA SHOULD TAKE COVER IMMEDIATELY.
SEVERE THUNDERSTORMS PRODUCE WINDS 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.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, Jul 9, 9:58 PM CDT, 4 hours 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST. CLOUD MN 950 PM CDT THU JULY 9 1987 ...TORNADO WATCH UNTIL 200 AM CDT FOR PORTIONS OF WEST CENTRAL MINNESOTA... AT 942 PM CDT RADAR SHOWED A LINE OF INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN IN WEST CENTRAL MINNESOTA FROM NEAR ORTONVILLE TO NEAR MARSHALL. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR. LISTEN FOR FURTHER STATEMENTS OR WARNINGS AND BE PREPARED TO MOVE TO A PLACE OF SAFETY IF SEVERE WEATHER MOVES INTO YOUR AREA. FRASER
Special weather statement, Jul 9, 11:02 PM CDT, 3 hours 7 minutes before
MKC WW 100358 SDZ000-MNZ000-100358- BULLETIN TORNADO WATCH CANCELLATION NATIONAL WEATHER SERVICE KANSAS CITY MO 1058 PM CDT THU JUL 09 1987 THE NATIONAL SEVERE STORMS FORECAST CENTER HAS CANCELLED TORNADO WATCH NUMBER 352 ISSUED AT 713 PM CDT FOR A LARGE PART OF EASTERN SOUTH DAKOTA AND PARTS OF SOUTHWEST MINNESOTA HOWEVER...SEVERE THUNDERSTORM WATCH NUMBER 354 REMAINS IN EFFECT FOR MUCH OF SOUTHWEST AND SOUTHCENTRAL MINNESOTA. ..HALES..
Special weather statement, Jul 10, 12:44 AM CDT, 1 hour 25 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1240 AM CDT FRI JUL 10 1987
..A LINE OF THUNDERSTORMS IS ADVANCING EAST ACROSS SOUTHERN
MINNESOTA..
AT 1230 AM CDT WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS
IN SOUTHERN MINNESOTA FROM JUST NORTH OF LITCHFIELD IN MEEKER COUNTY TO
NEAR HECTOR IN EASTERN RENVILLE COUNTY..TO AROUND REDWOOD FALLS. THIS
LINE OF THUNDERSTORMS IS ROUGHLY 50 TO 60 MILES EAST OF MINNEAPOLIS.
THESE THUNDERSTORMS WERE ADVANCING EAST AT 30 TO 35 MILES AN HOUR.
THEY WILL BE MOVING THROUGH WRIGHT...MC LEOD..SIBLEY..AND NICOLLET
COUNTIES BETWEEN 1245 AND 130 AM. BY 130 AM THESE THUNDERSTORMS WILL
BE MOVING INTO THE WEST TWIN CITIES METRO AREA IN THE COUNTIES OF
HENNEPIN..CARVER..AND SCOTT.
SOME OF THE CITIES IN THE PATH OF STRONGER THUNDERSTORMS ARE..
HUTCHINSON AND GLENCOE IN MCLOED COUNTY.
THESE THUNDERSTORMS HAVE THE CAPABILITY OF PRODUCING `WINDS IN THE
50 MPH RANGE...INTENSE LIGHTNING...SOME HAIL..AND A PERIOD OF
TORRENTIAL RAINS.
IF THREATENING WEATHER APPROACHES YOU...TAKE SHELTER.
PAULSONSpecial weather statement, Jul 10, 12:48 AM CDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY..CORRECTION PARA 1 LINE 4
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1240 AM CDT FRI JUL 10 1987
..A LINE OF THUNDERSTORMS IS ADVANCING EAST ACROSS SOUTHERN
MINNESOTA..
AT 1230 AM CDT WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS
IN SOUTHERN MINNESOTA FROM JUST NORTH OF LITCHFIELD IN MEEKER COUNTY TO
NEAR HECTOR IN EASTERN RENVILLE COUNTY..TO AROUND REDWOOD FALLS. THIS
LINE OF THUNDERSTORMS IS ROUGHLY 50 TO 60 MILES WEST OF MINNEAPOLIS.
THESE THUNDERSTORMS WERE ADVANCING EAST AT 30 TO 35 MILES AN HOUR.
THEY WILL BE MOVING THROUGH WRIGHT...MC LEOD..SIBLEY..AND NICOLLET
COUNTIES BETWEEN 1245 AND 130 AM. BY 130 AM THESE THUNDERSTORMS WILL
BE MOVING INTO THE WEST TWIN CITIES METRO AREA IN THE COUNTIES OF
HENNEPIN..CARVER..AND SCOTT.
SOME OF THE CITIES IN THE PATH OF STRONGER THUNDERSTORMS ARE..
HUTCHINSON AND GLENCOE IN MCLOED COUNTY.
THESE THUNDERSTORMS HAVE THcE CAPABILITY OF PRODUCING WINDS IN THE
50 MPH RANGE...INTENSE LIGHTNING...SOME HAIL..AND A PERIOD OF
TORRENTIAL RAINS.
IF THREATENING WEATHER APPROACHES YOU...TAKE SHELTER.
PAULSONSpecial weather statement, Jul 10, 1:27 AM CDT, 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
125 AM CDT FRI JUL 10 1987
..INTENSE THUNDERSTORMS MOVING THROUGH EAST CENTRAL AND SOUTH CENTRAL
MINNESOTA..
AT 120 AM CDT INTENSE THUNDERSTORMS WERE OCCURRING ALONG A LINE THAT
EXTENDED FROM NORTHWEST OF THE TWIN CITIES NEAR MONTICELLO IN NORTHERN
WRIGHT COUNTY..SOUTH TO NEAR WACONIA IN THE CENTRAL PART OF CARVER COUNTY
TO NEAR GAYLORD IN SIBLEY COUNTY.
THESE THUNDERSTORMS ARE EXPECTED TO MOVE INTO SOUTHERN TO EASTERN HENNIPEN
AND CENTRAL SCOTT COUNTY BY 145 AM. SOME CITIES THAT WILL BE AFFECTED BY
THESE THUNDERSTORMS WILL BE ANOKA..MINNETONKA..JORDAN AND CHASKA.
NO SEVERE WEATHER HAS BEEN REPORTED WITH THIS ACTIVITY BUT STRONG GUSTY
WINDS OF 45 TO 55 MILES AN HOUR..FREQUENT LIGHTNING STRIKES AND HAIL
CAN BE EXPECTED AS THESE THUNDERSTORMS MOVE EAST AT 35 TO 40 MILES AN
HOUR.
ELSEWHERE ANOTHER AREA OF STRONG THUNDERSTORMS WAS OCCURRING IN SOUTH
CENTRAL MINNESOTA SOUTHWEST OF MANKATO IN WATONWAN COUNTY. AT 120 AM
PEA SIZE HAIL AND GUSTY WINDS WERE REPORTED IN THE ST JAMES AREA.
THESE THUNDERSTORMS WERE ALSO MOVING EAST AT 35 TO 40 MILES AN HOUR.
PERSONS IN SOUTHERN MINNESOTA SHOULD REMAIN ALERT AND KEEP ABREAST OF
THIS DEVELOPING WEATHER SITUATION. FURTHER STATEMENTS AND POSSIBLE
WARNINGS MAY BE ISSUED.
MUCH OF SOUTHWEST AND SOUTH CENTRAL MINNESOTA REMAINS UNDER A SEVERE
THUNDERSTORM WATCH UNTIL 500 AM
SWANBERGThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 2:42 AM CDT | Severe Thunderstorm Warning | MPX | Dodge, Goodhue, Olmsted | 48 min |
| Jul 10, 2:42 AM CDT | Severe Thunderstorm Warning | MPX | Rice | 48 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1987Every severe thunderstorm warning in 1987
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.