Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 11, NWS Twin Cities, MN

June 15, 1997Dunn County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 15, 1997, 3:24 PM CDT for Dunn County, Wisconsin. It was in force for 36 min. 2 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
Jun 15, 1997, 3:24 PM CDT (20:24 UTC)
Expired
Jun 15, 1997, 4:00 PM CDT
In force
36 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Dunn County, WI

What was reported inside it

TimeReportWhereRemark
Jun 15, 3:30 PM CDTTornado F2Downsville, WIThree silos, machine shed, barn and several trees damaged or destroyed. Pieces of shed found 1 mile away. Numerous trees and power lines down.
Jun 15, 3:35 PM CDTThunderstorm Wind 50Downsville, WIShed destroyed. Trees and power lines down. Estimated windspeed.

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, 8.4 hours before the alert went out and 135 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 1997-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 202 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 1997-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 330 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
202 J/kg
Mixed-layer CIN
-176 J/kg
Mixed-layer LCL
1188 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
330 m²/s²
0-3 km storm-relative helicity
314 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

748 
WUUS1 KMSP 152026 RRA
SVRMSP
WIC033-152100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
324 PM CDT SUN JUN 15 1997

* SEVERE THUNDERSTORM WARNING FOR
  DUNN COUNTY - WEST CENTRAL WISCONSIN

* UNTIL 400 PM CDT
 
* SOME LOCATIONS AFFECTED
    MENOMONIE
    WESTON
    DOWNSVILLE
    EAU GALLE

* AT 320 PM CDT DOPPLER RADAR INDICATED A SEVERE STORM NEAR
  WOODVILLE OR 20 MILES WEST OF MENOMONIE.  THE STORM WAS MOVING
  EAST AT 30 MPH.

THIS IS A DANGEROUS STORM...WITH LARGE HAIL.  STAY INDOORS AWAY
FROM WINDOWS.


HOWIESON

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 15, 2:45 PM CDTSevere Thunderstorm WarningMPXPierce, Saint Croix60 min
Jun 15, 3:53 PM CDTTornado WarningMPXChippewa, Dunn, Eau Claire37 min
Jun 15, 4:25 PM CDTTornado WarningMPXEau Claire35 min

Nearby

Severe 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.