Alert archive / Wisconsin / Tornado Warnings in 1997

Tornado Warning 19, NWS Twin Cities, MN

July 5, 1997Dunn County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Jul 5, 1997, 6:30 PM CDT for Dunn County, Wisconsin. It was in force for 30 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
Jul 5, 1997, 6:30 PM CDT (23:30 UTC)
Expired
Jul 5, 1997, 7:00 PM CDT
In force
30 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Dunn County, WI

The radar

The Minneapolis radar (KMPX), 132 km from the middle of the area, began a volume at 23:30 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

TimeReportWhereRemark
Jul 5, 6:45 PM CDTThunderstorm Wind 55Colfax, WIShingles torn off roof. Few trees down. Estimated windspeed.
Jul 5, 6:55 PM CDTThunderstorm Wind 60Elk Mound, WILarge branches down.

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, 11.5 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 1997-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1997-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1610 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
71 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.

310 
WFUS1 KMSP 052332 RRA
TORMSP
WIC033-060000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
630 PM CDT SAT JUL 5 1997

* TORNADO WARNING FOR
  DUNN COUNTY - WEST CENTRAL WISCONSIN

* UNTIL 700 PM CDT
 
* SOME LOCATIONS AFFECTED
    WHEELER
    CEDAR FALLS
    MENOMONIE

* AT 627 PM CDT LAW ENFORCEMENT REPORTED A FUNNEL CLOUD OVER
  WHEELER...OR ABOUT 20 MILES NORTH OF MENOMONIE.  THE STORM WAS
  MOVING SOUTHEAST AT 20 MPH.

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR

MILLER
 

&

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 6:17 PM CDTSevere Thunderstorm WarningMPXPolk58 min
Jul 5, 6:47 PM CDTTornado WarningMPXChippewa, Eau Claire43 min

Nearby

Tornado Warnings in Wisconsin, 1997Every tornado warning in 1997Tornadoes 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.