Alert archive / Wisconsin / Tornado Warnings in 1989

Tornado Warning 21, NWS Green Bay, WI

August 4, 1989Dane County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Aug 4, 1989, 10:05 PM CDT for Dane County, Wisconsin. It was in force for 25 min. 1 report 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 4, 1989, 10:05 PM CDT (03:05 UTC)
Expired: Aug 4, 1989, 10:30 PM CDT
In force: 25 min
Issued by: NWS Green Bay, WI
Area: Whole counties

County Dane 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 4, 10:10 PM CDT	Thunderstorm Wind 0	Dane, 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.1 hours before the alert went out and 189 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3204 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1215 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSN 050306
TORMSN
WIC025-050330-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MADISON WI
1005 PM CDT FRI AUG 4 1989
 
THE NATIONAL WEATHER SERVICE IN MADISON WIHAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1030 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH CENTRAL WISCONSIN
          ...DANE
 
AT 10 PM CDT NATIONAL WEATHER SERVICE RADAR INDICATED A POSSIBLE
TORNADO 15 MILES WEST OF MADISON MOVING EAST-SOUTHEAST AT 35 MPH.
NUMEROUS FUNNEL CLOUDS HAVE BEEN REPORTED ALOFT THIS EVENING.
 
 
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL I
NTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
 
MEM

The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 4, 8:33 PM CDT	Severe Thunderstorm Warning	GRB	Juneau, Sauk	42 min
Aug 4, 8:44 PM CDT	Severe Thunderstorm Warning	GRB	Iowa, Richland	46 min
Aug 4, 10:56 PM CDT	Severe Thunderstorm Warning	GRB	Green, Rock	64 min
Aug 5, 1:05 AM CDT	Severe Thunderstorm Warning	GRB	Green	55 min
Aug 5, 1:33 PM CDT	Severe Thunderstorm Warning	GRB	Dane, Rock	42 min

Nearby

Tornado Warnings in Wisconsin, 1989 Every tornado warning in 1989 Tornadoes in 1989

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.