Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 15, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Jul 27, 1986, 8:55 PM CDT for Crawford County, Wisconsin. It was in force for 50 min.
The area
The counties it named.
The facts
- Issued
- Jul 27, 1986, 8:55 PM CDT (01:55 UTC)
- Expired
- Jul 27, 1986, 9:45 PM CDT
- In force
- 50 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties
County Crawford 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
Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.9 hours before the alert went out and 266 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
- 1274 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 1172 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLSE 280155 SVRLSE WIC023-280245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 855 PM CDT SUN JUL 27 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF WEST WISCONSIN...CRAWFORD AT 950 PM CDT WEATHER RADAR SHOWED A DANGEROUS THUNDERSTORM LOCATED IN EXTREME NORTHEAST IOWA AND MOVING SOUTHEAST AT 15 MPH. THIS STORM SHOULD HIT THE WESTERN EDGE OF CRAWFORD COUNTY BY 905 PM CDT. TREES WERE BLOWN DOWN EARLIER IN SOUTHWEST VERNON COUNTY WHICH IS LOCATED SOUTH OF LA CROSSE. THIS PARTICULAR STORM IS ALSO ENTERING THE NORTH CENTRAL PART OF CRAWFORD COUNTY. PEOPLE THROUGHOUT ALL OF CRAWFORD COUNTY 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. SEEK SHELTER IF THESE STORMS THREATEN YOUR AREA. REMEMBER..SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITHOUT WARNING. 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, 4:40 PM CDT, 4 hours 15 minutes 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, 3 hours 30 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, 2 hours 45 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, 2 hours 27 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, 2 hours 25 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
Special weather statement, Jul 27, 7:56 PM CDT, 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER MN 745 PM CDT SUN JUL 27 1986 ...HEAVY RAIN FELL ON SOUTHEAST MINNESOTA TODAY... AT 730 PM CDT...VERY STRONG THUNDERTORMS CONTINUE TO MOVE SLOWLY SOUTHEAST THROUGH EXTREME SOUTHEAST MINNESOTA. THE MAIN CONCENTRATION OF THUNDERSTORMS WITH HEAVY RAINS WAS IN FILLMORE COUNTY AND EASTERN MOWER COUNTY. THIS AREA IS DRIFTING SOUTHWARD INTO NORTHERN IOWA. THE DOWNPOURS OF RAIN ON THE MINNESOTA SIDE OF THE BORDER WAS SOUTH OF A LINE FROM ADAMS AND OSTRANDER. MOVEMENT WAS TO THE SOUTH AT 10 TO 15 MPH. PERSONS LIVING OR DRIVING THROUGH THESE TWO COUNTIES OF MOWER AND FILLMORE THIS EVENING SHOULD BE ALERT FOR LOW LAND FLOODING AND HIGH RISING SMALL STREAMS. RAINFALL REPORTS TODAY...GRANDMEADOW OVER 2 INCHES. WYCOFF 2.5 INCHES. SPRING VALLEY 3.75. ANDERSON
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 8:15 PM CDT | Severe Thunderstorm Warning | ARX | Vernon | 45 min |
| Jul 27, 9:40 PM CDT | Severe Thunderstorm Warning | ARX | Crawford | 35 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.