Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 12, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Jul 27, 1986, 6:40 PM CDT for La Crosse County, Trempealeau County, Wisconsin. It was in force for 35 min.
The area
The counties it named.
The facts
- Issued
- Jul 27, 1986, 6:40 PM CDT (23:40 UTC)
- Expired
- Jul 27, 1986, 7:15 PM CDT
- In force
- 35 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties
Counties La Crosse 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 12:00Z, 11.7 hours before the alert went out and 205 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1192 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 230 m²/s²
- 0-3 km storm-relative helicity
- 249 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 KLSE 272340 RRA SVRLSE WIC121-063-280015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 640 PM CDT SUN JUL 27 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF WEST WISCONSIN...TREMPEALEAU AND LA CROSSE AT 630 PM CDT WEATHER RADAR INDICATED DANGEROUS THUNDERSTORMS EXTENDING FROM NORTH OF EAU CLAIRE WISCONSIN TO JUST WEST OF LA CROSSE. THE STORMS WERE MOVING TO THE EAST AT 20 MILES PER HOUR. THESE STORMS ARE CURRENTLY AFFECTING TREMPEALEAU COUNTIES AND REPORTES OF TREES BLOWN DOWN HAVE BEEN REPORTED AT BOTH GALESVILLE AND WHITEHALL. THE STORMS WILL BE AFFECTING LA CROSSE COUNTY BY 645 PM CDT PEOPLE IN THE WARNED AREA SHOULD BE ALERT FOR DAMAGING WINDS IN EXCESS OF 60 MILES PER HOUR..HAIL 3/4 INCH OR MORE IN DIAMETER.. DEADLY LIGHTNING..AND HEAVY RAIN THAT CAN QUICKLY FLOOD LOW LYING AREAS. TAKE SHELTER IMMEDIATELY IN A REINFORCED BUILDING PREFERABLY ON THE LOWEST FLOOR OR IN THE BASEMENT. REMEMBER..SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITHOUT WARNING. STAY TUNED TO RADIO..TELEVISION..OR WEATHER RADIO FOR THE LATEST INFORMATION. MILES
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, 4:32 PM CDT, 2 hours 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER MN 425 PM CDT SUN JUL 27 1986 ...VERY STRONG THUNDERSTORMS IN SOUTHEAST MINNESOTA..NEARING ROCHESTER... AT 420 PM CDT A VERY STRONG LINE OF THUNDERSTORMS WAS DEVELOPING IN SOUTHEAST MINNESOTA FROM SOUTHERN GOODHUE..SOUTHWARD INTO EASTERN DODGE AND MOWER COUNTIES. TJIS STRONG LINE OF THUNDERSTORMS IS MOVING EAST AT ABOUT 15 MPH AND WILL BE MOVING TO A LINE FROM ZUMBRO FALLS SOUTH TO ROCHESTER VICINITY AND THEN TO SPRING VALLEY BY 5 PM CDT THIS LATE AFTERNOON. ALL PERSONS IN THE AREA OF THESE STORMS SHOULD BE PREPARED FOR HEAVY DOWN POURS..HIGH WINDS AND POSSIBLE HAIL. ANDERSON
Special weather statement, Jul 27, 4:40 PM CDT, 2 hours before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 440 PM CDT SUN JUL 27 1986 ...ISOLATED STRONG THUNDERSTORMS NORTHEAST OF LA CROSSE... AT 440 PM CDT..ISOLATED STRONG THUNDERSTORMS WERE LOCATED BETWEEN LA CROSSE AND FORT MC COY WISCONSIN..WHICH IS 30 MILES NORTHEAST OF LA CROSSE. THE STORMS WERE MOVING EAST AT 30 MILES PER HOUR AND WERE PROBABLY PRODUCING DANGEROUS LIGHTNING AND HEAVY RAINFALL. WIND GUSTS UP TO 50 MILES PER HOUR ALONG WITH MARBLE SIZE HAIL IS ALSO A POSSIBILITY. PEOPLE IN THE LA CROSSE TRI STATE AREA..ESPECIALLY BOATERS AND CAMPERS..SHOULD BE ALERT FOR STRONG THUNDERSTORMS THIS AFTERNOON AND EVENING. BE SAFE AND PROTECT YOURSELF OR YOUR FAMILY. GbO INDOORS IF A STORM AFFECTS YOUR AREA. STAY TUNED TO RADIO..TELEVISION..OR WEATHER RADIO FOR THE LATEST INFORMATION. THOMPSON
Special weather statement, Jul 27, 5:25 PM CDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 525 PM CDT SUN JUL 27 1986 ...SEVERE THUNDERSTORM WATCH FOR LA CROSSE AND ADJACENT AREAS OF WEST WISCONSIN..SOUTHEAST MINNESOTA..AND NORTHEAST IOWA UNTIL 1100 PM CDT... AT 525 PM CDT..STRONG THUNDERSTORMS WERE LOCATED IN A LINE FROM 60 MILES NORTHWEST OF LA CROSSE TO ROCHESTER MINNESOTA. THE STRONGEST STORMS WERE NEAR ROCHESTER MINNESOTA. THE STORMS WERE MOVING EAST AT 20 MILES PER HOUR AND WILL AFFECT THE CITY OF LA CROSSE AND IMMEDIATE VICINITY BETWEEN 630 AND 730 PM CDT. PEOPLE IN THE LA CROSSE TRI STATE AREA..ESPECIALLY BOATERS AND CAMPERS..SHOULD BE ALERT FOR THESE THUNDERSTORMS. BE SAFE AND PROTECT YOURSELF OR YOUR FAMILY. GO INDOORS IF THESE STORMS AFFECT YOUR AREA. REMEMBER..A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE FORMATION OF SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND BE PREPARED TO SEEK SHELTER IF THREATENING WEATHER IS SIGHTED. STAY TUNED TO RADIO..TELEVISION..OR WEATHER RADIO FOR THE LATEST INFORMATION. THOMPSON
Special weather statement, Jul 27, 6:10 PM CDT, 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 610 PM CDT SUN JUL 27 1986 ...SEVERE THUNDERSTORM WATCH FOR LA CROSSE AND ADJACENT AREAS OF WEST WISCONSIN..SOUTHEAST MINNESOTA..AND NORTHEAST IOWA UNTIL 1100 PM CDT... AT 600 PM CDT WEATHER RADAR SHOWED AN AREA OF STRONG THUNDERSTORMS LOCATED FROM 40 MILES NORTHEAST OF EAU CLAIRE WISCONSIN TO 10 MILES WEST OF LA CROSSE TO 30 MILES WEST OF ROCHESTER THEN TO 20 MILES NORTHEAST OF MINNEAPOLIS. THE STORMS WERE MOVING TO THE EAST AT 20 MILES PER HOUR. HEAVY RAIN HAS BEEN OCCURRING WITH THESE STORMS IN BUFFALO AND TREMPEALEAU COUNTIES OF WEST CENTRAL WISCONSIN..NORTH OF LA CROSSE. AT THE CURRENT TIME IT APPEARS THAT HEAVY RAIN..DANGEROUS LIGHTNING..STRONG GUSTY WIND AND POSSIBLY SOME SMALL HAIL CAN BE EXPECTED IN THE VICINITY OF LA CROSSE BY 620 PM CDT. PEOPLE IN THE LA CROSSE TRI STATE AREA..ESPECIALLY BOATERS AND CAMPERS..SHOULD BE ALERT FOR THESE THUNDERSTORMS. BE SAFE AND PROTECT YOURSELF OR YOUR FAMILY. GO INDOORS IF THESE STORMS AFFECT YOUR AREA. STAY TUNED TO RADIO..TELEVISION..OR WEATHER RADIO FOR THE LATEST INFORMATION. MILES
Special weather statement, Jul 27, 6:28 PM CDT, 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER MN 620 PM CDT SUN JUL 27 1986 ...STRONG THUNDERSTORMS OVER SOUTHEAST MINNESOTA... AT 510 PM CDT A STRONG LINE OF THUNDERSTORMS WERE STRECHING OVER SOUTHEAST MINNESOTA FROM THE MISSISSIPPI RIVER..NEAR WINONA THEN WEST TO A FEW MILES NORTH OF PRESTON..THEN TO AUSTIN. THIS LINE OF STORMS IS MOVING TO THE EAST AT 15 TO 20 MPH..BUT AT THE SAME TIME IS ALSO DEVELOPING WESTWARD INTO MOWER COUNTY. THIS LINE COULD PRODUCE HEAVY DOWNPOURS OF RAIN..GUSTY WINDS TO 50 MPH AND HAIL TO MARBLE SIZE. THE STRONGEST CONCENTRATION OF THUNDERSTORMS HAS BEEN IN NORTHEAST MOWER COUNTY AND THE NORTHWEST CORNER OF FILLMORE COUNTY FROM DEXTER TO WYK3OFF. WHERE HEAVY RAINS SINCE 5 PM CDT COULD HAVE CAUSED SOME FLOODING OF LOWLANDS. ALL PERSONS AND MOTORIST SHOULD BE ON THE ALERT FOR HIGH WATER CONDITIONS IN LOCAL AREAS. ANDERSON
Special weather statement, Jul 27, 6:30 PM CDT, 10 minutes before
SPECIAL WEATHER STATEMENT..CORRECTION IN TIME.. NATIONAL WEATHER SERVICE ROCHESTER MN 620 PM CDT SUN JUL 27 1986 ...STRONG THUNDERSTORMS OVER SOUTHEAST MINNESOTA... AT 610 PM CDT A STRONG LINE OF THUNDERSTORMS WERE STRECHING OVER SOUTHEAST MINNESOTA FROM THE MISSISSIPPI RIVER..NEAR WINONA THEN WEST TO A FEW MILES NORTH OF PRESTON..THEN TO AUSTIN. THIS LINE OF STORMS IS MOVING TO THE EAST AT 15 TO 20 MPH..BUT AT THE SAME TIME IS ALSO DEVELOPING WESTWARD INTO MOWER COUNTY. THIS LINE COULD PRODUCE HEAVY DOWNPOURS OF RAIN..GUSTY WINDS TO 50 MPH AND HAIL TO MARBLE SIZE. THE STRONGEST CONCENTRATION OF THUNDERSTORMS HAS BEEN IN NORTHEAST MOWER COUNTY AND THE NORTHWEST CORNER OF FILLMORE 6COUNTY FROM DEXTER TO WYKOFF. WHERE HEAVY RAINS SINCE 5 PM CDT COULD HAVE CAUSED SOME FLOODING OF LOWLANDS. ALL PERSONS AND MOTORIST SHOULD BE ON THE ALERT FOR HIGH WATER CONDITIONS IN LOCAL AREAS. ANDERSON
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 5:57 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 63 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.