Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 11, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Jul 27, 1986, 5:57 AM CDT for Buffalo County, Trempealeau County, Wisconsin. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Jul 27, 1986, 5:57 AM CDT (10:57 UTC)
- Expired
- Jul 27, 1986, 7:00 AM CDT
- In force
- 63 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties
Counties Buffalo County, WI, Trempealeau 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 00:00Z, 11.0 hours before the alert went out and 171 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 KMSN 271057 SVRLSE WIC011-121-271200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LA CROSSE WI ISSUED BY MADISON WI 557 AM CDT SUN JUL 27 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF WEST CENTRAL WISCONSIN...BUFFALO AND TREMPEALEAU AT 555 AM CDT A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM NEAR EAU CLAIRE TO ALMA OR ABOUT 30 MILES SOUTHWEST OF EAU CLAIRE. THIS LINE OF THUNDERSTORMS WAS MOVING TO THE SOUTHEAST AT ABOUT 40 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND DEADLY LIGHTNING. TORNADOES CAN ALSO DEVELOP FROM SEVERE THUNDERSTORMS. IF THREATENING WEATHER APPROACHES TAKE SHELTER IMMEDIATELY. ADDISON
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, 5:29 AM CDT, 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER MN 525 AM CDT SUN JUL 27 1986 ...VERY STRONG THUNDERSTORMS MOVING ACROSS SOUTHEAST MINNESOTA... AT 520 AM CDT A LINE OF VERY STRONG THUNDERSTORMS WERE ALONG A LINE FROM LAKE CITY TO WEST CONCORD TO WASECA AND MANKATO AND MOVING EAST AT 40 MPH. BRIEF HEAVY RAIN HAIL AND GUSTY WINDS ARE LIKELY AS THIS LINE OF STORMS MOVES OVER THE REMAINDER OF SOUTHEAST MINNESOTA EARLY THIS SUNDAY MORNIN?G. MOVEMENT OF THE THUNDERSTORMS WILL BE ACROSS WABASHA OLMSTED DODGE WASECA COUNTIES BY 630 AM CDT. BUSS
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 6:40 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Trempealeau | 35 min |
| Jul 27, 6:50 PM CDT | Severe Thunderstorm Warning | ARX | Jackson | 55 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; the sounding from the Mesonet's radiosonde archive.