Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 61, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 20, 1987, 7:14 PM CDT for Meeker County, Minnesota. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Jul 20, 1987, 7:14 PM CDT (00:14 UTC)
- Expired
- Jul 20, 1987, 8:15 PM CDT
- In force
- 61 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Meeker 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, 0.2 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
- 3871 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 860 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 4.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTC 210019 SVRSTC MNC093-210115- BULLETIN-IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST CLOUD MN 714 PM CDT MON JUL 20 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF CENTRAL MINNESOTA...MEEKER INCLUDING THE CITIES OF DARWIN AND DASSEL. AT 710 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM IN EASTERN MEEKER COUNTY OF CENTRAL MINNESOTA APPROXIMATELY 35 MILES SOUTHWEST OF ST. CLOUD. THIS DANGEROUS THUNDERSTORM WAS MOVING EAST AT 30 MPH. LARGE HAIL...DANGEROUS LIGHTNING...HEAVY RAINFALL...AND DAMAGING WINDS CAN BE EXPECTED FROM SEVERE THUNDERSTORMS. IF THREATENING WENATHER APPROACHES...YOU SHOULD GO TO A SAFE PLACE IMMEDIATELY...AND YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR SEVERE WEATHER REPORT TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE. FRASER
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
Local storm report, Jul 20, 1:23 PM CDT, 5 hours 51 minutes before
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
115 PM CDT MON JUL 20 198
...ATTN SELS A MSP...
...NOTE ALL REPORTS ARE FOR WISCONSIN COUNTIES.
1015 AM CDT LARGE TREES DOWN BETWEEN RICE LAKE AND CAMERON IN BARRON
COUNTY. FROM BARRON COUNTY SHERIFFS OFFICE.
1027 AM LARGE TREE DAMGE NR CHRISTIE MOUNTAIN...ABOUT 10 TO 15 MILES
NORTHWEST OF LADYSMITH IN RUSK COUNTY. REPORT OF CONFIRMED
TORNADO. FROM RUSK COUNTY SHERIFFS OFFICE.
1105 AM LARGE TREES DOWN 5 MILES EAST OF AUBURN IN NORTHWEST
CHIPPEWA COUNTY. FROM CHIPPEWA COUNTY SHERIFFS OFFICE.
953 AM LARGE TREES DOWN AND DAMAGE TO A BARN AND SHED ABOUT 3 MILES
EAST OF RICE LAKE. FROM BARRON COUNTY SHERIFFS OFFICE.
1002 AM LARGE TREES DOWN IN BARRON IN BARRON COUNTY FROM BARRON
COUNTY SHERIFFS OFFICE.
1050 AM (APPROXIMATED TIME) LARGE TREES DOWN IN CHETEK IN BARRON
COUNTY FROM BARRON COUNTY SHERIFFS OFFICE.
BETWEEN 11 AM AND 1130 AM....4 INCH DIAMETER TREES AND LARGE BRANCHES
DOWN NEAR HOLCOMBE IN NORTHEAST CHIPPEWA COUNTY. FROM NORTHERN
STATES POWER COMPANY.
PAULSONSpecial weather statement, Jul 20, 2:16 PM CDT, 4 hours 58 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 215 PM CDT MON JUL 20 1987 ...SEVERE THUNDERSTORM WATCH NUMBER 404 CANCELED FOR EAST CENTRAL MINNESOTA... THE NATIONAL WEATHER SERVICE HAS CANCELED THE SEVERE THUNDERSTORM WATCH ISSUED EARLIER FOR EAST CENTRAL MINNESOTA WHICH INCLUDED THE TWIN CITIES METRO AREA. THE LINE OF THUNDERSTORMS HAD MOVED OUT OF MINNESOTA AND INTO WEST WISCONSIN. WITH A FRONTAL BOUNDARY STILL PRESENT OVER SOUTHERN MINNESOTA JUST SOUTH OF THE TWIN CITIES...THUNDERSTORMS COULD REDEVELOP LATER THIS AFTERNOON. PERSONS SHOULD REMAIN ALERT TO LATER FORECASTS AND STATEMENTS FROM THE NATIONAL WEATHER SERVICE DURING THE AFTERNOON. JHM
Special weather statement, Jul 20, 2:53 PM CDT, 4 hours 21 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 250 PM CDT MON JUL 20 1987 AT 235 PM CDT...INTENSE THUNDERSTORMS CONTINUED OVER WEST CENTRAL WISCONSIN FROM 35 MILES SOUTHEAST OF EAU CLAIRE NEAR FAIRCHILD TO 40 MILES SOUTHWEST OF EAU CLAIRE NEAR MONDOVI. VERY HEAVY RAINS..STRONG GUSTY WINDS AND DANGEROUS LIGHTNING CAN BE EXPECTED WITH THESE STORMS AS THEY MOVE SOUTH AT 45 MILES AN HOUR. THE STORMS SHOULD BE LOCATED ALONG A LINE FROM NEAR BLACK RIVER FALLS TO 25 MILES NORTH OF LA CROSSE BY 315 PM CDT. THESE STORMS WERE PART OF AN AREA OF SHOWERS AND THUNDERSTORMS THAT EXTENDED FROM 25 MILES EAST OF HAYWARD TO 25 MILES WEST OF WAUSAU TO# SOUTH OF EAU CLAIRE. STANDFIELD JHM
Special weather statement, Jul 20, 3:47 PM CDT, 3 hours 27 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 345 PM CDT MON JUL 20 1987 ....SEVERE THUNDERSTORM WATCH UNTIL 9 PM CDT FOR PARTS OF WEST CENTRAL WISCONSIN.... AT 330 PM CDT...STRONG THUNDERSTORMS CONTINUED OVER WEST CENTRAL WISCONSIN 35 MILES NORTHEAST OF LA CROSSE JUST NORTH AND WEST OF BLACK RIVER FALLS. THE STORMS WERE MOVING SOUTH AT 40 MILES AN HOUR AND SHOULD BE LOCATED JUST NORTHEAST OF LA CROSSE TO NORTH OF TOMAH BY 415 PM CDT. VERY HEAVY RAINS...STRONG GUSTY WINDS AND DANGEROUS LIGHTNING CAN BE EXPECTED WITH THE STORMS. ELSEWHERE..SHOWERS AND THUNDERSTORMS HAD DEVELOPED OVER WEST CENTRAL MINNESOTA FROM THE MINNESOTA/SOUTHI DAKOTA BORDER NEAR BIG STONE LAKE TO WEST OF ALEXANDRIA TO 35 MILES SOUTH OF DETROIT LAKES. MOVEMENT WAS NORTHEAST AT 45 MILES AN HOUR. STANDFIELD
Special weather statement, Jul 20, 6:21 PM CDT, 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
615 PM CDT MON JUL 20 1987
..THUNDERSTORMS TO AFFECT THE LAKE MINNETONKA AREA..
A STRONG THUNDERSTORM HAS BEEN DEVELOPING RAPIDLY OVER WESTERN HENNEPIN
COUNTY IN THE MOUND AND INDEPENDENCE AREA. THIS THUNDERSTORM WAS SLOWLY
MOVING TO THE EAST SOUTHEAST AND IT WILL MOVE ACROSS PARTS OF LAKE
MINNETONKA THROUGH 700 PM.
SOME LIGHTNING..GUSTY WINDS AND HEAVY RAINS ARE POSSIBLE WITH THIS STORM.
PERSONS BOATING OR FISHING ON LAKE MINNETONKA SHOULD MAKE PLANS NOW TO
HEAD FOR SAFE HARBOR UNTIL THE THUNDERSTORMS PASS BY THE LAKE.
AT 615 PM CDT..OTHER THUNDERSTORMS WERE FORMING OVER SCOTT..WESTERN ANOKA
AND WRIGHT COUNTIES OF THE WESTERN METROPOLITAN AREA.
THEY WERE MOVING EAST AT ABOUT 20 MILES AN HOUR.
SWANBERGThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 7:06 PM CDT | Tornado Warning | MPX | Dakota | 24 min |
| Jul 20, 7:13 PM CDT | Tornado Warning | MPX | Anoka, Hennepin, Ramsey | 27 min |
| Jul 20, 8:00 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 60 min |
| Jul 20, 8:09 PM CDT | Severe Thunderstorm Warning | MPX | Ramsey, Washington | 51 min |
| Jul 20, 9:34 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Scott | 56 min |
| Jul 20, 9:45 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Meeker | 60 min |
| Jul 20, 10:36 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 54 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; the sounding from the Mesonet's radiosonde archive.