Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 94, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 26, 1987, 6:17 AM CDT for Morrison County, Stearns County, Todd County, Minnesota. It was in force for 58 min.
The area
The counties it named.
The facts
- Issued
- Jul 26, 1987, 6:17 AM CDT (11:17 UTC)
- Expired
- Jul 26, 1987, 7:15 AM CDT
- In force
- 58 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Morrison County, MN, Stearns County, MN, Todd 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, 11.3 hours before the alert went out and 138 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
- 2406 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1047 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 3.3
- Supercell composite
- 13.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSTC 261126
SVRSTC
MNC153-145-097-261215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAINT CLOUD MN
0617 AM CDT SUN JUL 26 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 715 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF
CENTRAL MINNESOTA...SOUTH EASTERN TODD...SOUTHWEST MORRISON...AND
CENTRAL AND EASTERN STEARNS INCLUDING THE CITIES OF GREY EAGLE...
UPSALA...HOLDINGFORD...ALBANY...AND ST CLOUD AND SUBARBS.
AT 615 AM CDT A SEVERE THUNDERSTORM WAS INDICATED BY RADAR OVER GREY
EAGLE...30 MILES NORTHWEST OF ST CLOUD MINNESOTA. THIS SEVERE THUNDER
STORM WAS MOVING SOUTHEAST 25 MPH.
REMEMBER SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60
MPH..DESTRUCTIVE HAIL..DEADLY LIGHTNING AND VERY HEAVY RAIN. 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.
RUBIN/TRIPLETTWhat 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 26, 2:10 AM CDT, 4 hours 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST. CLOUD MN 215 AM CDT SUN JUL 26 1987 ...SEVERE THUNDERSTORM WATCH FOR CENTRAL MINNESOTA UNTIL 7 AM CDT... AT 210 AM CDT RADAR INDICATED THUNDERSTORMS NORTH AND EAST OF A LINE FROM JUST SOUTH OF FARGO NORTH DAKOTA TO ALEXANDRIA TO WILLMAR AND TO THE TWIN CITIES. SOME OF THESE STORMS HAD PRODUCED HEAVY RAIN. BETWEEN 1 AND 2AM CDT SMALL HAIL AND VERY HEAVY RAIN WAS REPORTED IN MEEKER COUNTY AT EDEN VALLEY...AND HEAVY RAIN WAS REPORTED AT DASSEL...35 MILES SOUTH OF ST. CLOUD. NO SEVERE WEATHE HAD BEEN REPORTED. DE VOE
Special weather statement, Jul 26, 3:45 AM CDT, 2 hours 32 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 345 AM CDT SUN JUL 26 1987 ...SEVERE THUNDERSTORM WARNING FOR SOUTHEAST WABASHA AND WINOA COUNTY UNTIL 4 AM... ...SEVERE THUNDERSTORM WATCH FOR PORTIONS OF CENTRAL AND SOUTHERN MINNESOTA UNTIL 7 AM... ...FLASH FLOOD WATCH FOR THE TWIN CITIES METRO AREA..AND ALSO GOODHUE AND WABASHA COUNTIES UNTIL 6 AM... AT 330 AM RADAR INDICATED AN EXTENSIVE AREA OF THUNDERSTORMS FROM WEST CENTRAL MINNESOTA ABOUT 25 MILES NORTHWEST OF GLENWOOD SOUTH AND EAST THROUGH THE TWIN CITIES AND ON INTO SOUTHEAST WISCONSIN NEAR MILWAUKEE. WHILE THE MAXIMUM INTENSITY OF THE THUNDERSTORMS REMAINED UNCHANGED FROM 230 AM THE OVERALL TREND WAS A DECREASE IN INTENSITY. STRONGEST THUNDER- STORMS WERE LOCATED ALONG THE MISSISSIPPI RIVER SOUTHEAST OF THE TWIN CITIES NEAR LAKE CITY. THESE THUNDERSTORMS REMAIN CAPABLE OF PRODUCING STRONG WINDS..SMALL HAIL..AND INTENSE RAINS. FREQUENT AND DEADLY LIGHTNING WAS ALSO REPORTED WITH THESE THUNDERSTORMS. MOVEMENT WAS SOUTHEAST AT ABOUT 30 MILES AN HOUR. LRS
Special weather statement, Jul 26, 4:02 AM CDT, 2 hours 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 400 AM CDT SUN JUL 26 1987 SEVERE THUNDERSTORM WATCH NUMER 433 IS NO LONGER IN EFFECT FOR ANY PART OF MINNESOTA. THE THREAT0 OF DAMAGING THUNDERSTORMS HAS ENDING IN MINNESOTA. A FLASH FLOOD WATCH REMAINS IN EFFECT HOWEVER UNTIL 600 AM FOR THE TWIN CITIES AND ITS SUBURBS AS WELL AND GOODHUE AND WABASHA COUNTIES JUST TO THE SOUTHEAST OF MINNEAPOLIS AND ST PAUL. WJH
Special weather statement, Jul 26, 5:44 AM CDT, 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST. CLOUD MN 545 AM CDT SUN JUL 26 1987 ...THUNDERSTORMS WERE MOVING TOWARD MILLE LACS LAKE... AT 540 AM CDT THUNDERSTORMS WERE MOVING TOWARD MILLE LACS LAKE AT ABOUT 25 MPH...AND WILL BE AFFECTING THE LAKE AREA FROM ABOUT 600 AM CDT TO 730 AM CDT. NO SEVERE WEATHER HAS BEEN REPORTED AT THIS TIME OR IS INDICATED ON RADAR. HOWEVER...THESE THUNDERSTORMS MAY PRODUCE GUSTY WINDS AND FREQUENT LIGHTING STRIKES...BOATERS...FISHERPERSONS...AND OTHERS ENGAGING IN OUTDOOR ACTIVITIES IN THE AFFECTED AREA SHOULD TAKE NECESSARY PRECAUTIONS. RUBIN
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 11:13 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Meeker, Renville | 47 min |
| Jul 26, 12:17 AM CDT | Severe Thunderstorm Warning | MPX | Stearns | 58 min |
| Jul 26, 2:14 AM CDT | Severe Thunderstorm Warning | MPX | McLeod | 26 min |
| Jul 26, 2:14 AM CDT | Severe Thunderstorm Warning | MPX | Carver | 46 min |
| Jul 26, 3:09 AM CDT | Severe Thunderstorm Warning | MPX | Wabasha, Winona | 21 min |
| Jul 26, 3:31 AM CDT | Severe Thunderstorm Warning | MPX | Wabasha, Winona | 29 min |
| Jul 26, 9:24 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 36 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.