Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 134, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 27, 1986, 5:28 AM CDT for Dunn County, Pepin County, Wisconsin. It was in force for 27 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 27, 1986, 5:28 AM CDT (10:28 UTC)
- Expired
- Jul 27, 1986, 5:55 AM CDT
- In force
- 27 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Dunn County, WI, Pepin County, WI
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 27, 5:45 AM CDT | Thunderstorm Wind 52 | Pepin, WI |
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, 10.5 hours before the alert went out and 125 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
- 441 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 936 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 290 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 7.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSP 271028 SVRMSP WIC033-091-271055- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 528 AM CDT SUN JUL 27 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 555 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF WEST CENTRAL WISCONSIN...SOUTHERN DUNN AND EASTERN PEPIN AT 525 AM..RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS THAT EXTENDED FROM NORTH OF BALDWIN OVER CENTRAL ST CROIX COUNTY.. SOUTH THROUGH ELMWOOD AND PLUM CITY IN EASTERN PIERCE COUNTY. THIS LINE OF SEVERE THUNDERSTORMS WAS MOVING RAPIDLY EAST AT 55 MILES AN HOUR. SOME CITIES IN THE WARNING AREA ARE..DURAND AND MENOMONIE. THIS LINE OF STORMS HAS BEEN PRODUCING VERY STRONG WINDS IN EXCESS OF 60 MILES AN HOUR. 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. RICHARDSON
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 27, 1:01 AM CDT, 4 hours 27 minutes before
SEVERE STORM REPORT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1100PM CDT SAT JUL 26 1986
...ATTN SELS A MSP...
600 PM CDT...GOLF BALL HAIL IN CHIPPEWA CO. 8 MI EAST OF MONTEVIDEO.
611 PM CDT...FUNNEL CLOUD REPORTED IN CHIPPEWA CO. 2 1/2 MILES NORTHWEST
OF MAYNARD.
615 PM CDT...TORNADO ON GROUND IN CHIPPEWA CO. 6 MI EAST OF MONTEVIDEO.
658 PM CDT...GRAPEFRUIT SIZE HAIL IN CHIPPEWA CO. 13 MILES EAST NORTHEAST
OF MONTEVIDEO.
800 PM CDT...MARBLE SIZE HAIL IN RENVILLE CO. BETWEEN DANUBE AND
RENVILLE.
805 PM CDT...MARBLE SIZE HAIL IN NORTHERN RENVILLE CO.
858 PM CDT...LARGE TREE LIMBS REPORTED SEVERED AT SACRED HEART IN
WESTERN RENVILLE CO.
OSTERNDORF/L%OFGREN/MATHEWSSpecial weather statement, Jul 27, 1:56 AM CDT, 3 hours 32 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 150 AM CDT SUN JUL 27 1986 ..STRONG THUNDERSTORMS ACROSS MINNESOTA AND NORTHWEST WISCONSIN.. AT 135 AM CDT..STRONG THUNDERSTORMS WERE LOCATED ACROSS WIDELY SCATTERED PARTS OF MINNESOTA INTO NORTHWEST SECTIONS OF WISCONSIN. MOST OF THE THUNDERSTORMS WERE LOCATED IN A BROAD BAND THAT EXTENDED FROM THE SOUTH DAKOTA BORDER NEAR SIOUX FALLS..NORTHEAST THROUGH WILLMAR AND ALEXANDRIA OF CENTRAL MINNESOTA..WHERE THEY CONTINUED EAST INTO NORTHWEST WISCONSIN TO BETWEEN EAU CLAIRE AND SUPERIOR. STRONGEST THUNDERSTORMS IN THIS BAND WERE LOCATED OVER EXTREME WESTERN MINNESOTA NEAR CANBY..OVER NORTHERN KANDIYOHI COUNTY NORTH OF WILLMAR.. BETWEEN ST CLOUD AND LAKE MILLE LACS AND FINALLY FROM NEAR GRANTSBURG TO DANBURY OF NORTHWEST WISCONSIN. ANOTHER AREA OF STRONG THUNDERSTORMS PERSISTED OVER EASTERN RENVILLE COUNTY OF SOUTH CENTRAL MINNESOTA. NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE THUNDERSTORMS BUT FREQUENT LIGHTNING STRIKES..GUSTY WINDS..SMALL HAIL AND BRIEF HEAVY RAINS CAN BE EXPECTED WITH THESE STORMS AS THEY MOVE EAST AT 30 TO 35 MILES AN HOUR. ..A SEVERE THUNDERSATORM WATCH IS IN EFFECT FOR PARTS OF SOUTHERN AND CENTRAL MINNESOTA UNTIL 600 AM.. SWANBERG
Special weather statement, Jul 27, 3:27 AM CDT, 2 hours 1 minute before
KMSP 270827 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 320 AM CDT SUN JUL 27 1986 ..STRONG THUNDERSTORMS MOVING ACROSS CENTRAL MINNESOTA.. A NARROW BAND OF STRONG THUNDERSTORMS WAS INDICATED BY WEATHER RADAR WEST OF THE TWIN CITIES ACROSS PARTS OF MCLEOD..WRIGHT..MEEKER AND RENVILLE COUNTIES WITH THE LEADING EDGE LOCATED FROM LESTER PRAIRIE TO HOWARD LAKE..EXTENDING WEST TOWARD HUTCHINSON AND LITCHFIELD. THIS AREA OF STRONG THUNDERSTORMS WAS MOVING EAST AT 30 TO 35 MILES AN HOUR AND WILL BE EFFECTING CARVER..WRIGHT AND WESTERN HENNEPIN COUNTIES OF THE TWIN CITIES METROPOLITAN AREA UNTIL AT LEAST 400 AM. STRONG WINDS OF 45 TO 55 MILES AN HOUR..FREQUENT LIGHTNING STRIKES ..SMALL HAIL AND VERY HEAVY RAINS WILL BE LIKELY AS THESE STORMS MOVE THROUGH THE AREA. SWANBERG COUNTY OF SOUTH CENTRAL MINNESOTA. NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE THUNDERSTORMS BUT FREQUENT LIGHTNING STRIKES..GUSTY WINDS..qSMALL HAIL AND BRIEF HEAVY RAINS CAN BE EXPECTED WITH THESE STORMS AS THEY MOVE EAST AT 30 TO 35 MILES AN HOUR. ..A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF SOUTHERN AND CENTRAL MINNESOTA UNTIL 600 AM.. SWANBERG
Special weather statement, Jul 27, 3:29 AM CDT, 1 hour 59 minutes before
KMSP 270829 COR KMSP 270827 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN ..CORRECTION.. 320 AM CDT SUN JUL 27 1986 ..STRONG THUNDERSTORMS MOVING ACROSS CENTRAL MINNESOTA.. A NARROW BAND OF STRONG THUNDERSTORMS WAS INDICATED BY WEATHER RADAR WEST OF THE TWIN CITIES ACROSS PARTS OF MCLEOD..WRIGHT..MEEKER AND RENVILLE COUNTIES WITH THE LEADING EDGE LOCATED FROM LESTER PRAIRIE TO HOWARD LAKE..EXTENDING WEST TOWARD HUTCHINSON AND LITCHFIELD. THIS AREA OF STRONG THUNDERSTORMS WAS MOVING EAST AT 30 TO 35 MILES AN HOUR AND WILL BE EFFECTING CARVER..WRIGHT AND WESTERN HENNEPIN COUNTIES OF THE TWIN CITIES METROPOLITAN AREA UNTIL AT LEAST 400 AM. STRONG WINDS OF 45 TO 55s MILES AN HOUR..FREQUENT LIGHTNING STRIKES ..SMALL HAIL AND VERY HEAVY RAINS WILL BE LIKELY AS THESE STORMS MOVE THROUGH THE AREA. SWANBERG
Special weather statement, Jul 27, 4:21 AM CDT, 1 hour 7 minutes before
KMSP 270829 COR KMSP 270827 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 415 AM CDT SUN JUL 27 1986 ..STRONG THUNDERSTORMS MOVING TOWARD THE TWIN CITIES METROPOLITAN AREA.. A LINE OF STRONG THUNDERSTORMS CONTINUED TO MOVE TOWARDS THE TWIN CITIES METROPOLITAN AREA. AT 410 AM THE LINE WAS LOCATED FROM WESTERN PARTS OF LAKE MINNETONKA..SOUTH THROUGH EASTERN CARVER COUNTY AND DOWN ALONG THE MINNESOTA RIVER TO BELLE PLAINE AND LE SUEUR. AT 350 AM..50 MILE AN HOUR WINDS WERE REPORTED IN THE WACONIA AREA OF CARVER COUNTY WITH OTHER REPORTS INDICATING WINDS IN THE 35 TO 50 MILE AN HOUR RANGE ACROSS PARTS OF SIBLEY AND CARVER COUNTIES. BESIDES THE WIND..THIS LINE OF THUNDERSTORMS HAS BEEN PRODUCING FREQUENT LIGHTNING STRIKES AND VERY HEAVY RAINS ALONG WITH SOME SMALL HAIL. PRESENT MOVEMENT OF THE THUNDERSTORMS WAS EAST AT 35 MILES AN HOUR AND THEY WILL BE EFFECTING NORTHERN LE SUEUR..SCOTT..DAKOTA..AND SOUTHERN HENNEPIN COUNTIES THROUGH 515 AM. OTHER THUNDERSTORMS HAVE ALSO DEVELOPED OVER THE MINNEAPOLIS/ST PAUL DOWNTOWN AREAS DURING THE PAST HOUR AND THESE STORMS WILL PROBABLY BEGIN TO MERGE WITH THE LINE APPROACHING FROM THE WEST. AT THIS TIME NO SEVERE WEATHER HAS BEEN REPORTED BUT WINDS MAY GUST IN THE 45 TO 55 MILE AN HOUR RANGE AS THESE STORMS MOVE THROUGH THE GREATER TWIN CITIES METROPOLITAN AREA DURING THE EARLY MORNING HOURS. SOME LOW LAND AND STREET FLOODING WILL BE POSSIBLE WITH THESE STORMS SO EARLY MORNING MOTORISTS SHOULD SLOW DOWN AND EXERCISE CAUTION. SWANBERG
Special weather statement, Jul 27, 5:07 AM CDT, 21 minutes before
KMSP 270829 COR
KMSP 270827
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
505 AM CDT SUN JUL 27 1986
..STRONG THUNDERSTORMS MOVING INTO WESTERN WISCONSIN...
A LINE OF STRONG THUNDERSTORMS WAS MOVING OUT OF THE EASTERN PARTS OF
THE TWIN CITIES METROPOLITAN AREA AND BEGINNING TO CROSS THE ST CROIX
AND MISSISSIPPI RIVERS INTO EXTREME WESTERN WISCONSIN.
AT 505 AM..THE LINE OF THUNDERSTORMS WAS LOCATED FROM NEAR STILLWATER
TO HUDSON ALONG THE ST CROIX RIVER..SOUTH TO RIVER FALLS WISCONSIN AND
CONTINUED TO AROUND RED WING MINNESOTA.
THIS LINE OF THUNDERSTORMS HAS BEEN PRODUCING VERY STRONG WINDS IN THE
45 TO 55 MILE AN HOUR RANGE AS IT MOVED THROUGH THE TWIN CITIES METRO
AREA.
PERSONS IN WESTERN WISCONSIN INCLUDING PEPIN..PIERCE..ST CROIX AND
DUNN SHOULD BE PREPARED FOR THE STRONG WINDS AS THIS LINE OF STORMS
MOVES THROUGH THE AREA.
KEEP ABREAST OF THE WEATHER AND LISTEN FOR LATER STATEMEN%TS AND POSSIBLE
WARNINGS AS THE LINE OF STORMS MOVES EAST AT 45 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 27, 5:14 AM CDT | Severe Thunderstorm Warning | MPX | Pierce, Saint Croix | 21 min |
| Jul 27, 5:14 AM CDT | Severe Thunderstorm Warning | MPX | Pepin | 21 min |
| Jul 27, 3:47 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 53 min |
| Jul 27, 4:58 PM CDT | Severe Thunderstorm Warning | MPX | Pepin | 47 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 1986Every severe thunderstorm warning in 1986
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.