Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 153, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 7, 1986, 1:29 PM CDT for Pierce County, Saint Croix County, Wisconsin. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Aug 7, 1986, 1:29 PM CDT (18:29 UTC)
- Expired
- Aug 7, 1986, 2:30 PM CDT
- In force
- 61 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Pierce County, WI, Saint Croix County, WI
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 12:00Z, 6.5 hours before the alert went out and 92 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
- 154 J/kg
- Mixed-layer CIN
- -163 J/kg
- Mixed-layer LCL
- 620 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -78 m²/s²
- 0-3 km storm-relative helicity
- -35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSP 071829 SVRMSP WIC109-093-071930- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 129 PM CDT THU AUG 7 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 230 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF WEST CENTRAL WISCONSIN...SOUTHERN ST CROIX AND NORTHERN PIERCE AT 130 PM RADAR INDICATED A SEVERE THUNDERSTORM DEVELOPING ON THE ST CROIX RIVER WEST OF RIVER FALLS. HAIL WAS INDICATED ON WEATHER RADAR. ALSO FREQUENT LIGHTNING STRIKES AND TORRENTIAL RAINS CAN BE EXPECTED WITH THIS THUNDERSTORM AS IT MOVES EAST AT 15 TO 20 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. BRANCH
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, Aug 7, 11:54 AM CDT, 1 hour 35 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1150 AM CDT THU AUG 7 1986
..STRONG THUNDERSTORMS DEVELOPE OVER EASTERN MINNESOTA AND WESTERN
WISCONSIN..
STRONG THUNDERSTORMS HAVE BEEN BUILDING SINCE 1030 AM OVER EAST CENTRAL
MINNESOTA AND WEST CENTRAL WISCONSIN. THE THUNDERSTORMS WERE OCCURRING
OVER NORTH AND NORTHEAST SUBURBS OF THE TWIN CITIES METROPOLITAN AREA
THROUGH SOUTHEAST ANOKA..NORTHERN RAMSEY AND NORTHERN WASHINGTON
COUNTIES EXTENDING ACROSS THE ST CROIX RIVER INTO SOUTHERN POLK AND
NORTHERN ST CROIX COUNTIES OF WEST CENTRAL WISCONSIN.
ANOTHER STRONG THUNDERSTORM WAS LOCATED ABOUT 20 MILES NORTHWEST OF
EAU CLAIRE NEAR WHEELER IN NORTHERN DUNN COUNTY.
THESE THUNDERSTORMS MAY PRODUCE PEA TO MARBLE SIZE HAIL ALONG WITH
GUSTY WINDS AND FREQUENT LIGHTNING STRIKES.
MOVEMENT WAS TO THE EAST AT 20 TO 25 MILES AN HOUR.
AT 1135 AM CDT..OTHER SHOWERS AND ISOLATED THUNDERSTORMS WERE
OCCURRING ACROSS MUCH OF NORTHWEST AND WEST CENTRAL WISCONSIN
INTO WIDELY SCATTERED SECTIONS OF CENTRAL AND SOUTHEAST MINNESOTA.
MOST OF THE PRECIPITATION WAS LOCATED IN AN AREA BOUNDED BY EAU CLAIRE
..DULUTH AND THE TWIN CITIES METROPOLITAN AREA.
MOVEMENT WAS EAST AT 20 TO 25 MILES AN HOUR.
SWANBERGSpecial weather statement, Aug 7, 12:59 PM CDT, 30 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1245 PM CDT THU AUG 7 1986 ..STRONG THUNDERSTORMS OVER EASTERN MINNESOTA AND WESTERN WISCONSIN.. AT 1235 PM CDT..SCATTERED STRONG THUNDERSTORMS CONTINUED TO MOVE ACROSS PARTS OF EASTERN MINNESOTA AND WEST CENTRAL WISCONSIN. THESE STORMS WERE LOCATED ALONG A NARROW WEST TO EAST LINE THAT EXTENDED FROM THE NORTHEAST SUBURBS OF THE TWIN CITIES METROPOLITAN AREA..ACROSS THE ST CROIX RIVER INTO WISCONSIN TO NEAR CLEAR LAKE OVER NORTHERN ST CROIX COUNTY. OTHER STRONG THUNDERSTORMS WERE OCCURRING OVER WEST CENTRAL WISCONSIN JUST WEST OF ELLSWORTH IN PIERCE COUNTY AND BETWEEN HOLCOMBE AND CORNELL IN NORTHERN CHIPPEWA COUNTY. SOME OF THESE STORMS MAY PRODUCE SOME PEA TO MARBLE SIZE HAIL ALONG WITH GUSTY WINDS AND FREQUENT LIGHTNING STRIKES AS THEY MOVE EAST AT 20 TO 25 MILES AN HOUR. THESE THUNDERSTORMS WERE PART OF AN AREA OF SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS CONTINUING OVER PARTS OF CENTRAL AND SOUTHEAST MINNESOTA INTO NORTHWEST AND WEST CENTRAL WISCONSIN. THE MOST CONCENTRATED AREA OF PRECIPITATION WAS BETWEEN EAU CLAIRE AND THE TWIN CITIES. MOVEMENT WAS EAST AT 20 TO 25 MILES AN HOUR. SWANBERG
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; the sounding from the Mesonet's radiosonde archive.