Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 9, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Apr 5, 1997, 5:15 PM CST for Winona County, Minnesota; La Crosse County, Wisconsin. It was in force for 45 min. 3 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
- Apr 5, 1997, 5:15 PM CST (23:15 UTC)
- Expired
- Apr 5, 1997, 6:00 PM CST
- In force
- 45 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties
Counties Winona County, MN, La Crosse County, WI
The radar
The La Crosse radar (KARX), 25 km from the middle of the area, began a volume at 23:19 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 5, 5:23 PM CST | Thunderstorm Wind 55 | La Crosse, WI | |
| Apr 5, 5:30 PM CST | Thunderstorm Wind 52 | Winona, MN | |
| Apr 5, 5:40 PM CST | Thunderstorm Wind 52 | Minnesota City, MN |
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.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.3 hours before the alert went out and 198 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
- 486 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 100 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 052315 RRA
SVRLSE
MNC169-WIC063-060000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
515 PM CST SAT APR 5 1997
* SEVERE THUNDERSTORM WARNING FOR
LA CROSSE COUNTY - WEST CENTRAL WISCONSIN
WINONA COUNTY - SOUTHEASTERN MINNESOTA
* UNTIL 600 PM CST
* SOME LOCATIONS AFFECTED
WINONA
LA CROSSE
DRESBACH
* AT 514 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF SEVERE THUNDERSTORMS FROM 10 MILES SOUTHWEST OF WINONA TO 10
MILES SOUTHEAST OF LA CROSSE. THIS LINE OF STORMS WAS MOVING
NORTH AT 40 MPH.
* THESE STORMS WILL BE NEAR LEWISTON AND LA CROSSE AT 525 PM.
THE MAIN THREAT FROM THESE STORMS IS DAMAGING WINDS. DO NOT GO
OUTDOORS.
RACY/RIECKThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 4:24 PM CST | Severe Thunderstorm Warning | ARX | Fillmore | 61 min |
| Apr 5, 4:52 PM CST | Severe Thunderstorm Warning | ARX | Houston | 38 min |
| Apr 5, 5:30 PM CST | Severe Thunderstorm Warning | ARX | Wabasha | 45 min |
| Apr 5, 4:24 PM CST | Severe Thunderstorm Warning | ARX | Crawford | 61 min |
| Apr 5, 4:24 PM CST | Severe Thunderstorm Warning | ARX | Grant | 61 min |
| Apr 5, 4:52 PM CST | Severe Thunderstorm Warning | ARX | Richland, Vernon | 38 min |
| Apr 5, 5:25 PM CST | Severe Thunderstorm Warning | ARX | Monroe | 50 min |
| Apr 5, 5:30 PM CST | Severe Thunderstorm Warning | ARX | Jackson, Trempealeau | 45 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1997Severe Thunderstorm Warnings in Wisconsin, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.