Alert archive / Wisconsin / Tornado Warnings in 1990

Tornado Warning 6, NWS Milwaukee, WI

September 6, 1990Fond du Lac County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Sep 6, 1990, 5:12 PM CDT for Fond du Lac County, Wisconsin. It was in force for 33 min.

The area

The counties it named.

The facts

Issued
Sep 6, 1990, 5:12 PM CDT (22:12 UTC)
Expired
Sep 6, 1990, 5:45 PM CDT
In force
33 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

County Fond du Lac County, WI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 10.2 hours before the alert went out and 425 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 1990-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1194 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 1990-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
1194 J/kg
Mixed-layer CIN
-209 J/kg
Mixed-layer LCL
1010 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMKE 062215
TORMKE
WIC039-062245-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
512 PM CDT THU SEP 6 1990
 
THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN EAST CENTRAL WISCONSIN
          ...FOND DU LAC
 
AT 510 PM WEATHER RADAR INDICATED A POSSIBLE TORNADO NEAR
FOND DU LAC NEAR THE SOUTHERN PART OF LAKE WINNEBAGO.
 
BOTH NEENAH RADAR AND MADISON RADAR HAVE INDICATION A TORNADO
MAY BE DEVELOPING FROM THIS STORM.
 
THIS IS A DANGEROUS SITUATION.  TAKE SHELTER IMMEDIATELY.
THE EASTERN HALF OF FON DU LAC CFOUNTY IS UNDER THE IMMEADIATE
THREAT.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
HENTZ

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 4:57 PM CDTSevere Thunderstorm WarningMKXFond du Lac, Sheboygan63 min
Sep 6, 5:56 PM CDTSevere Thunderstorm WarningMKXSheboygan34 min
Sep 6, 6:58 PM CDTSevere Thunderstorm WarningMKXWood38 min

Nearby

Tornado Warnings in Wisconsin, 1990Every tornado warning in 1990Tornadoes in 1990

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.