Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 46, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 11, 1987, 4:47 PM CDT for Faribault County, Freeborn County, Minnesota. It was in force for 53 min. 4 reports 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 11, 1987, 4:47 PM CDT (21:47 UTC)
- Expired
- Jul 11, 1987, 5:40 PM CDT
- In force
- 53 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Faribault County, MN, Freeborn 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 11, 4:50 PM CDT | Hail 1.75 | Faribault, MN | |
| Jul 11, 5:20 PM CDT | Thunderstorm Wind 0 | Faribault, MN | |
| Jul 11, 5:40 PM CDT | Thunderstorm Wind 0 | Faribault, MN | |
| Jul 11, 5:47 PM CDT | Thunderstorm Wind 0 | Freeborn, 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 12:00Z, 9.8 hours before the alert went out and 131 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
- 2637 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 638 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KRST 112147 SVRRST MNC091-043-047-112240- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ROCHESTER MN 447 PM CDT SAT JUL 11 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 540 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTH CENTRAL MINNESOTA...EASTERN MARTIN...FARIBAULT AND WESTERN FREEBORN AT 427 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM IN THE VICINIT Y OF FAIRMONT MN MOVING EASTNORTHEAST AT 35 MPH. INCLUDED IN THE WARNING ARE THE CITIES OF FAIRMONT...BLUE EARTH... AND ALBERT LEA. 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. BUSS
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 11, 11:04 AM CDT, 5 hours 43 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1100 AM CDT SAT JUL 11 1987 AT 1045 AM CDT...POWERFUL THUNDERSTORMS WERE MOVING ACROSS SOUTHEAST MINNESTOA AND WEST CENTRAL WISCONSIN.. FROM EAU CLAIRE SOUTHWEST THRU PEPIN ACROSS THE MISSISSIPPI RIVER THRU LAKE CITY AND CONTINUING SOUTHWEST TO JUST WEST OF ROCHESTER. THERE HAS NOT BEEN ANY SEVERE WEATHER REPORTED FROM THIS LINE OF STORMS AS OF 1045 THIS MORNING.. MOSTLY BREIF BUT STRONG GUSTY WIND.. TORRENTIAL RAINFALL AND SMALL HAIL. SOME OF THE CITIES AND TOWNS IN THE PATH OF THIS LINE OF THUNDERSTORMS ARE.. ROCHESTER AND WABASHA.. MINNESOTA.. ALMA.. EAU CLAIRE.. AND CHIPPEWA FALLS W#ISCONSIN. DONT BE FOOLED BY WHAT HAS NOT HAPPENED YET.. IF THREATENING WEATHER IS SPOTTED TAKE IMMEDIATED ACTION TO PROTECT YOUR LIFE.. YOUR PROPERTY CAN BE REPLACED. MOVEMENT WAS EAST AT 45 MILES AN HOUR. CARLYON
Special weather statement, Jul 11, 11:59 AM CDT, 4 hours 48 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1150 AM CDT SAT JUL 11 1987 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR A SMALL PART OF SOUTHEAST MINNESOTA AND MUCH OF WISCONSIN...UNTIL 7 PM CDT THIS EVENING... AT 1145 AM CDT...POWERFUL THUNDERSTORMS WERE MOVING ACROSS THE SOUTHEAST CORNER OF MINNESTOA AND PARTS OF WEST AND WEST CENTRAL WISCONSIN.. FROM 10 MILES SOUTH OF LADYSMITH WISCONSIN SOUTHWEST THRU THE CHIPPEWA FALLS AND THE EAU CLAIRE AREA CONITINUING SOUTHEAST THRU DURAND AND ALMA THEN CROSSING THE MISSISSIPPI RIVER JUST SOUTH OF WABASHA THRU THE EXTREME SOUTHEAST CORNER OF MINNESOTA..JUST EAST OF ROCHESTER DOWN TO THE IOWA BORDER 15 MILES EAST OF I-35W. THERE HAS NOT BEEN ANY SEVERE WEATHER REPORTED FROM THIS LINE OF STORMS AS OF 1145 THIS MORNING.. MOSTLY BREIF BUT STRONG GUSTY WIND..TORRENTIAL RAINFALL AND SMALL HAIL. SOME OF THE CITIES AND TOWNS IN THE PATH OF THIS LINE OF THUNDERSTORMS ARE LADYSMITH.. STANLEY.. OSSEO.. WHITEHALL AND DODGE WISCONSIN.. WINONA ST. CHARLES.. PRESTON. JUST BECAUSE THERE HAS NOT BEEN ANY SEVERE WEATHER IS NO REASON TO BE LAX ABOUT THESE POTENTIALLY DANGEROUS STORMS. IF THREATENINkG WEATHER APPROACHES YOU BE PREPARED THE SEEK IMMEADIATE SAFETY FOR YOURSELF AND FAMILY.. PROPERTY CAN BE REPLACED. MOVEMENT WAS EAST AT 55 MILES AN HOUR. CARLYON
Special weather statement, Jul 11, 1:02 PM CDT, 3 hours 45 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 100 PM CDT SAT JUL 11 1987 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR A SMALL PART OF SOUTHEAST MINNESOTA AND MUCH OF WISCONSIN...UNTIL 7 PM CDT THIS EVENING... AT 1245 PM CDT...VERY STRONG THUNDERSTORMS CONTINUED PUSHING THROUGH PARTS OF WEST AND WEST CENTRAL WISCONSIN..FROM 10 MILES SOUTH OF PHILIPS SOUTH THRU MEDFORD.. NEILSVILLE.. AND BLACK RIVER FALLS TO JUST NORTH OF LA CROSSE. HALF INCH HAIL WAS REPORTED IN THE BLACKRIVER FALLS AREA ALONG WITH WIND GUSTS OF 40 TO 50 MPH. THAT HAS BEEN THE HISTORY OF THESE STORMS AS THE CROSSED SOUTHERN MINNESOTA AND WESTERN WISCONSIN LATE THIS MORNING AND EARLY THIS AFTERNOON. THERE HAS NOT BEEN ANY SEVERE WEATHER REPORTED FROM THIS LINE OF STORMS AS OF 1245 PM THIS AFTERNOON BUT.. MOSTLY BREIF BUT STRONG GUSTY WIND.. TORRENTIAL RAINFALL.. SMALL HAIL.. AND LAST BUT NOT LEAST DANGEROUS LIGHTNING. ANOTHER SMALL AREA OF STRONG THUNDERSTORMS POPPED UP ALONG THE MINNESOTA IOWA BORDER JUST SOUTH OF I-90 AT AUSTIN.. THESE STORMS WERE MOVING TO THE EAST AT 45 MPH. OTHERWISE SCATTERED RAINSHOWERS WERE DETECTED ACROSS MUCH OF SOUTHEAST MINNESOTA.. AND THE WESTERN HALF OF WISCONSIN IN THE WAKE OF THE OF THE STRONG THUNDERSTORMS THAT PASSED THROUGH EARLIER TODAY. MOVEMENT OF THE THUNDERSTORMS AND RAINSHOWERS WAS TO THE EAST AT 45 MPH. CARLYON
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, 3:20 AM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle, Yellow Medicine | 60 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 | 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.