Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 96, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 27, 1987, 3:23 AM CDT for Pierce 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, 1987, 3:23 AM CDT (08:23 UTC)
- Expired
- Jul 27, 1987, 3:50 AM CDT
- In force
- 27 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Pierce 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, 3:30 AM CDT | Thunderstorm Wind 61 | Pierce, 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, 8.4 hours before the alert went out and 94 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
- 1249 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 978 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSP 270828 COR SVRMSP WIC093-270850- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 323 AM CDT MON JUL 27 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 350 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF WEST CENTRAL WISCONSIN... WESTERN PIERCE AT 315 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM IN WESTERN PIERCE COUNTY ABOUT 25 MILES EAST OF DOWNTOWN ST PAUL MINNESOTA. SOME CITIES IN THE PATH OF THIS STORM ARE ELLSWORTH..BAY CITY. AND DIAMOND BLUFF. THE THUNDERSTORM WAS MOVING SOUTH..SOUTHEAST AT 25 TO 30 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. 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
Special weather statement, Jul 27, 2:10 AM CDT, 1 hour 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 205 AM CDT MON JUL 27 1987 ....STRONG THUNDERSTORMS DEVELOPING OVER EAST CENTRAL MIINESOTA AND WEST CENTRAL WISCONSIN.... AT 200 AM CDT...RADAR SHOWED A BAND OF STRONG THUNDERSTORMS FROM STILLWATER IN EAST CENTRAL MINNESOTA SOUTHEAST ACROSS ST CROIX...DUNN... EAU CLAIRE AND JACKSON COUNTIES OF WISCONSIN. THE STRONGEST STORMS WERE LOCTATED ALONG THE ST CROIX RIVER EAST OF STILLWATER AND OVER DUNN COUNTY SOUTHWEST OF WHEELER. THESE STORMS COULD PRODUCE BRIEF PERIODS OF HEAVY RAIN AND SOME SMALL HAIL AS THEY MOVE SOUTHEAST AT 35 MILES AN HOUR. OTHER SHOWERS AND THUNDERSTORMS MAY DEVELOP TO THE WEST OF THISW AREA AND COULD AFFECT PARTS OF THE NORTHERN TWIN CITIES METRPOLITAN AREA. STANDFIELD
Special weather statement, Jul 27, 2:54 AM CDT, 29 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 250 AM CDT MON JUL 27 1987 AT 231 AM CDT...STRONG THUNDERSTORMS WITH VERY HEAVY RAINS CONTINUED OVER EXTREME EAST CENTRAL MINNESOTA INTO WEST CENTRAL AND SOUTHWEST WISCONSIN FROM STILLWATER MINNESOTA TO NORTHWEST OF MADISON WISCONSIN. THE STRONGEST STORMS WERE LOCATED OVER AND ALONG THE ST CROIX RIVER NEAR STILLWATER AND OVER BALDWIN IN ST CROIX COUNTY...NORTHEAST OF ALMA IN BUFFALO COUNTY AND NORTHEAST OF LA CROSSE IN WEST CENTRAL WISCONSIN. PERIODS OF VERY HEAVY RAIN..STRONG GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING CAN BE EXPECTED WITH THE STORMS AS THEY MOVE SOUTHEAST AT 30 MILES ANx HOUR. NO SEVERE WEATHER HAS BEEN REPORTED WITH THE STORMS BUT PERSONS IN EAST CENTRAL MINNESOTA AND WESTERN WISCONSIN SHOULD BE PREPARED TO MOVE TO A PLACE OF SAFTETY OF THREATENING WEATHER DEVELOPS. STANDFIELD
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 2:36 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin | 39 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 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.