Alert archive / Wisconsin / Tornado Warnings in 1997

Tornado Warning 8, NWS Twin Cities, MN

June 30, 1997Eau Claire County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Jun 30, 1997, 12:06 PM CDT for Eau Claire County, Wisconsin. It was in force for 19 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 30, 1997, 12:06 PM CDT (17:06 UTC)
Expired
Jun 30, 1997, 12:25 PM CDT
In force
19 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Eau Claire County, WI

The radar

The La Crosse radar (KARX), 101 km from the middle of the area, began a volume at 17:10 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 5.1 hours before the alert went out and 183 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 1997-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 597 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 1997-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.1939Sfc1 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
597 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
640 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
98 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.

773 
WFUS1 KMSP 301707 RRA
TORMSP
WIC035-301725-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1206 PM CDT MON JUN 30 1997

* TORNADO WARNING FOR
  WESTERN AND CENTRAL EAU CLAIRE COUNTY - WEST CENTRAL WISCONSIN

* UNTIL 1225 PM CDT
 
* SOME LOCATIONS AFFECTED
    FALL CREEK
    BRACKETT
    CLEGHORN
    OPEN AREAS WEST OF FALL CREEK

* AT 1205 PM CDT LAW ENFORCEMENT REPORTED A DEVELOPING TORNADO 5
  MILES WEST OF FALL CREEK...OR ABOUT 10 MILES SOUTHEAST OF  EAU
  CLAIRE.  THE STORM WAS MOVING EAST AT 10 MPH.

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

TDK
 

&

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.