Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 35, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 11, 1987, 3:20 AM CDT for Lac qui Parle County, Yellow Medicine County, Minnesota. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Jul 11, 1987, 3:20 AM CDT (08:20 UTC)
- Expired
- Jul 11, 1987, 4:20 AM CDT
- In force
- 60 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Lac qui Parle County, MN, Yellow Medicine 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
Aberdeen, SD (KHON), launched 00:00Z, 8.3 hours before the alert went out and 188 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
- 3304 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1012 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 6.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSTC 110830
SVRSTC
MNC073-173-110920-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MN
320 AM CDT SAT JUL 11 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 420 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF
SOUTHWEST MINNESOTA...LAC QUI PARLE...YELLOW MEDICINE INCLUDING THE
CITIES OF CANBY...MADISON...DAWSON.
AT 315 AM CDT RADAR SHOWED A SEVERE THUNDERSTORM ON THE SOUTH DAKOTA
-MINNESOTA STATE LINE NEAR THE CITY OF HENDRICKS WHICH IS 60 MILES
WEST OF REDWOOD FALLS MINNESOTA. THIS SEVERE THUNDERSTORMS WAS
MOVING NORTHEAST AT 35 MPH.
REMEMBER SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WINDS..LARGE
HAIL AND FREQUENT LIGHTNING STRIKES. ALSO SEVERE THUNDERSTORMS CAN
AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE
WARNING...SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A PLACE OF
SAFETY IF ONE IS SPOTTED.
NISTLERWhat 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 10, 10:53 PM CDT, 4 hours 27 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1050 PM CDT FRI JUL 10 1987 ....INTENSE THUNDERSTORM OVER CENTRAL MINNESOTA.... AT 1031 PM CDT...AN ISOLATED INTENSE THUNDERSTORM WAS LOCATED 40 MILES NORTHEAST OF ALEXANDRIA NEAR LONG PRAIRIE IN CENTRAL MINNESOTA. VERY HEAVY RAINS...STRONG GUSTY WINDS AND HAIL CAN BE EXPECTED WITH THE STORM AS IT MOVES NORTHEAST AT 35 MILES AN HOUR. THE STORM SHOULD MOVE THROUGH MOFLEY AND BE LOCATED SOUTH OF PEQUOT LAKE BY 1130 PM CDT. OTHER STRONG THUNDERSTORMS WERE LOCATED OVER WEST CENTRAL MINNESOTA FROM SOUTHEAST OF DETROIT LAKES TO BRECKENRIDGE NEAR THE MINNESOTA/NORTH DAKOTA BORDER. THESE STORMS WERE ALSO MOVING NORTHEAST AT 35 MILES AN HOUR.
Local storm report, Jul 10, 11:24 PM CDT, 3 hours 56 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE ST CLOUD, MN 1115 PM CDT FRI JUL 10 1987 ...ATTN CELS... FOLLOW UP REPORT ON STORMS FROM SUN JUN 28 1987 ALL REPORTS ARE FROM YELLOW MEDICINE COUNTY IN WESTERN MINNESOTA APPROXIMATELY 50 MILES NORTHWEST OF REDWOON FALLS. 435 PM CDT TO 455 PM CDT SUNDAY JUN 28 1987. TORNADO WARNING WAS IN EFFECT FOR YELLOW MEDICINE COUNTY FROM 425 PM CDT TO 500 PM CDT MENTIONING THE FOLLOW CITIES BY NAME... CANBY...ST. LEO...AND HAZEL RUN. THREE TOUCHDOWNS...7 MILES NE OF CANBY...5 MILES S OF ST. LEO AND 5 MILES W OF HAZEL RUN. NUMEROUS OUT BUILDINGS DESTROYED..I.E.CATTLE SHEDS, GRANERIES ETC. ONE COW KILLED...SEVERAL INJURED. 200 ACRES OF FIELD CROPS DESTROYED BY RAIN AND/OR HAIL. NUMEROUS TREES DOWN. NO PERSONAL INJURIES. FRASER
Local storm report, Jul 10, 11:31 PM CDT, 3 hours 49 minutes before
LOCAL STORM REPORT...DISREGARD PREVIOUS REPORT...
NATIONAL WEATHER SERVICE ST CLOUD, MN
1115 PM CDT FRI JUL 10 1987
...ATTN CELS...
FOLLOW-UP TO SEVERE CELL IN TODD COUNTY OF CENTRAL MINNESOTA.
THREE CONFIRMED TORNADO TOUCHDOWNS...NO DAMAGE REPORTED AT THIS TIME.
2146 PM CDT 4 NORTH OF OSAKIS WHICH IS 15 MILES EAST OF ALEXANDRIA
2222 PM CDT 10 S EAGLE BEND WHICH IS 25 MILES NORTHEAST OF
ALEXANDRIA.
2222 PM CDT 3 WEST OF BROWERVILLE WHICH IS 30 MILES NORTHEAST OF
ALEXANDRIA.
YOUNGSpecial weather statement, Jul 11, 12:40 AM CDT, 2 hours 40 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1240 AM CDT SAT JUL 11 1987 AT 1230 AM...THUNDERSTORMS WITH HEAVY RAIN WERE OCCURRING OVER SCATTERED SECTIONS OF CENTRAL...SOUTH CENTRAL...AND WEST CENTRAL MINNESOTA. THEY WERE LOCATED IN A 50 MILE WIDE AREA FROM LEECH LAKE TO BIG STONE LAKE AND IN A 25 MILE WIDE AREA FROM REDWOOD FALLS TO NEW PRAGUE. THE STRONGEST THUNDERSTORMS WERE IN THE MOTLEY...PINE RIVER AREA OF CENTRAL MINNESOTA AND MAY PRODUCE HAIL...STRONG GUSTY WINDS...FREQUENT LIGHTNING AND HEAVY RAINFALL. PERSONS ENGAGED IN OUTDOOR ACTIVITIES SUCH AS FISHING OR CAMPING SHOULD TAKE APPROPRIATE SAFTEY PRECAUTIONS. MOVEMENT WAS TO THE EA=ST AT 30 MILES AN HOUR. KRAFT
Special weather statement, Jul 11, 1:27 AM CDT, 1 hour 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST. CLOUD MN 120 AM CDT SAT JULY 11 1987 ...THUNDERSTORMS WERE MOVING TOWARD MILLE LACS LAKE... AT 115 AM CDT RADAR SHOWED A LINE OF THUNDERSTORMS MOVING TOWARD MILLE LACS LAKE AT 30 MPH AND WILL BE AFFECTING THE LAKE AREA FROM 120 AM TO 300 AM. NO SEVERE WEATHER HAS BEEN REPORTED AT THIS TIME OR IS INDICATED ON RADAR. HOWEVER THESE THUNDERSTORMS MAY PRODUCE GUSTY WIND$S AND FREQUENT LIGHTNING STRIKES...BOATERS...FISHERPERSONS...AND OTHERS ENGAGED IN OUTDOOR ACTIVITIES IN THE AFFECTED AREA SHOULD TAKE NECESSARY PRECAUTIONS. NISTLER
Special weather statement, Jul 11, 1:37 AM CDT, 1 hour 43 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 130 AM CDT SAT JUL 11 1987 AT 130 AM...THUNDERSTORMS WITH VERY HEAVY RAIN WERE OCCURRING OVER SECTIONS OF CENTRAL...EAST CENTRAL...AND WEST CENTRAL MINNESOTA. THEY WERE LOCATED IN A 75 MILE WIDE AREA FROM GRAND RAPIDS TO ALEXANDRIA. THE STRONGEST THUNDERSTORMS WERE IN THE AITKIN...HILL CITY AREA OF CENTRAL MINNESOTA. THEY MAY PRODUCE HAIL...STRONG GUSTY WINDS...FREQUENT LIGHTNING AND VERY HEAVY RAINFALL. PERSONS ENGAGED IN OUTDOOR ACTIVITIES SUCH AS FISHING OR CAMPING SHOULD TAKE APPROPRIATE SAFTEY PRECAUTIONS. THUNDERSTORMS DEVELOPED RAPIDLY SINCE 1230 AM OVER THE SOUTHWEST SECTIONS OF THE GREAT,ER TWIN CITIES METROPOLITAN AREA OF EAST CENTRAL MINNESOTA. MOVEMENT WAS TO THE EAST AT 35 MILES AN HOUR. KRAFT
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 10:00 PM CDT | Severe Thunderstorm Warning | MPX | Todd | 60 min |
| Jul 10, 10:20 PM CDT | Tornado Warning | MPX | Todd | 25 min |
| Jul 11, 12:16 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Scott, Sibley | 44 min |
| Jul 11, 4:20 AM CDT | Severe Thunderstorm Warning | MPX | Yellow Medicine | 60 min |
| Jul 11, 5:50 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 60 min |
| Jul 11, 6:15 AM CDT | Severe Thunderstorm Warning | MPX | Meeker | 60 min |
| Jul 11, 6:45 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 45 min |
| Jul 11, 7:11 AM CDT | Severe Thunderstorm Warning | MPX | Watonwan | 49 min |
| Jul 11, 7:19 AM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Sherburne | 21 min |
| Jul 11, 7:19 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Isanti | 56 min |
| Jul 11, 7:42 AM CDT | Severe Thunderstorm Warning | MPX | Blue Earth | 48 min |
| Jul 11, 7:52 AM CDT | Severe Thunderstorm Warning | MPX | Washington | 28 min |
| Jul 11, 7:52 AM CDT | Severe Thunderstorm Warning | MPX | Chisago | 38 min |
| Jul 11, 4:47 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn | 53 min |
| Jul 11, 4:47 PM CDT | Severe Thunderstorm Warning | MPX | Martin | 53 min |
| Jul 11, 5:31 PM CDT | Severe Thunderstorm Warning | MPX | Dodge, Freeborn, Steele | 44 min |
| Jul 11, 5:48 PM CDT | Severe Thunderstorm Warning | MPX | Wabasha, Winona | 42 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.