Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 7, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Aug 26, 1990, 6:21 AM CDT for Jackson County, Trempealeau County, Wisconsin. It was in force for 69 min. 4 reports 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
- Aug 26, 1990, 6:21 AM CDT (11:21 UTC)
- Expired
- Aug 26, 1990, 7:30 AM CDT
- In force
- 69 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties
Counties Jackson 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 26, 6:25 AM CDT | Thunderstorm Wind 0 | Trempealeau, WI | |
| Aug 26, 6:25 AM CDT | Thunderstorm Wind 0 | Trempealeau, WI | |
| Aug 26, 6:25 AM CDT | Thunderstorm Wind 0 | Trempealeau, WI | |
| Aug 26, 7:00 AM CDT | Thunderstorm Wind 0 | Jackson, 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, 11.4 hours before the alert went out and 208 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
- 3299 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 1021 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 200 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 26, 4:38 AM CDT, 1 hour 43 minutes before
MNZ0018-019-261030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER MN 430 AM CDT SUN AUG 26 1990 ...STRONG THUNDERSTORM MOVING THROUGH SOUTH CENTRAL MINNESOTA... AT 435 AM CDT AN AREA OF STRONG THUNDERSTORMS WITH HEAVY RAIN AND WIND GUSTS OF 40 TO 50 MPH WERE MOVING THROUGH SOUTH CENTRAL MINNESOTA AND WERE LOCATED FROM THE TWIN CITIES TO NORTHFIELD... FARIBAULT...WASECA...WELLS...AND BLUE EARTH. THE STRONGEST THUNDERSTORMS WERE BETWEEN WATERVILLE AND WASECA AND NEAR WELLS. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 35 MPH WHILE THE WHOLE AREA OF SHOWERS AND THUNDERSTORMS WAS DRIFTING EAST AT 15 MPH. THE LEADING EDGE OF THE SHOWERS AND THUNDERSTORMS WILL BE NEAR RED WINtG...ZUMBROTA..AND AUSTIN BY 530 AM CDT. SHOWERS AND THUNDERSTORMS SHOULD REACH ROCHESTER BY ARUOUND 600 AM CDT. SS
Special weather statement, Aug 26, 5:11 AM CDT, 1 hour 10 minutes before
MNZ0018-019-261030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER MN 500 AM CDT SUN AUG 26 1990 ...STRONG THUNDERSTORM MOVING THROUGH SOUTHEAST MINNESOTA... AT 500 AM CDT AN AREA OF STRONG THUNDERSTORMS WITH HEAVY RAIN AND WIND GUSTS OF 40 TO 50 MPH WERE MOVING THROUGH SOUTHEAST MINNESOTA. THIS AREA WAS LOCATED FROM WEST OF ROCHESTER NEAR CLARKS GROVE AND BLOOMING PRAIRIE THEN EXTENDED THROUGH OWATONNA...WEST CONCORD... FARIBAULT...ZUMBROTA...ZUMBRO FALLS...LAKE CITY...AND RED WING. THE STRONGEST THUNDERSTORMS WERE NEAR ZUMBRO FALLS...ZUMBROTA... AND WEST CONCORD. THE THUNDERSTORMS WERE MOVING EAST AT 35 MPH. THUNDERSTORMS WILL REACH WABASHA...ROCHESTER AND AUSTIN BY 530 AM CDT...AND REACH MINNESOTA CITY...ST. CHARLES...AND SPRING VALLEY BY 600 AM CDT. SCS
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 6:38 AM CDT | Severe Thunderstorm Warning | ARX | La Crosse | 67 min |
| Aug 26, 7:04 AM CDT | Severe Thunderstorm Warning | ARX | Monroe, Vernon | 56 min |
| Aug 26, 7:33 AM CDT | Severe Thunderstorm Warning | ARX | Crawford | 57 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 1990Every severe thunderstorm warning in 1990
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.