Alert archive / Wisconsin / Tornado Warnings in 1990

Tornado Warning 2, NWS Green Bay, WI

August 18, 1990Green Lake County, Marquette County, Waushara County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Aug 18, 1990, 6:23 PM CDT for Green Lake County, Marquette County, Waushara County, Wisconsin. It was in force for 67 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 18, 1990, 6:23 PM CDT (23:23 UTC)
Expired: Aug 18, 1990, 7:30 PM CDT
In force: 67 min
Issued by: NWS Green Bay, WI
Area: Whole counties

Counties Green Lake County, WI, Marquette County, WI, Waushara 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 18, 6:31 PM CDT	Thunderstorm Wind 0	Waushara, 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 12:00Z, 11.4 hours before the alert went out and 110 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: 19 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 877 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 12 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.

000 
TTAA00 KMSN 182324
TORMSN
WIC137-047-077-190030-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MADISON WI
623 PM CDT SAT AUG 18 1990
 
THE NATIONAL WEATHER SERVICE IN MADISON WIHAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  730 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN CENTRAL WISCONSIN
          ...WAUSHARA
IN SOUTH CENTRAL WISCONSIN
          ...NORTHERN GREEN LAKE...MARQUETTE
 
AT 615PM CDT A TORNADO WAS REPORTED IN THE ADAMS-FRIENDSHIP AREA AND A
FUNNEL CLOUD REPORTED NEAR NEW LISBON BOTH WERE MOVING TOWARDS THE
EAST..SOUTHEAST AT 30 MPH. IF THESE STORMS APPROACH YOU...SEEK SHELTER
IMMEDIATELY.
 
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.
 
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 INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
 
STIMACH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 9:10 PM CDT	Severe Thunderstorm Warning	GRB	Iowa, Richland, Sauk	65 min
Aug 17, 11:15 PM CDT	Flash Flood Warning	GRB	Iowa	3 hr
Aug 17, 11:58 PM CDT	Flash Flood Warning	GRB	Iowa	6 hr
Aug 18, 5:57 PM CDT	Tornado Warning	GRB	Adams, Juneau	63 min

Nearby

Tornado Warnings in Wisconsin, 1990 Every tornado warning in 1990 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.