Alert archive / Wisconsin / Tornado Warnings in 1991

Tornado Warning 7, NWS Green Bay, WI

May 28, 1991Kewaunee County, Wisconsin

NWS Green Bay, WI issued this tornado warning at May 28, 1991, 3:04 PM CDT for Kewaunee County, Wisconsin. It was in force for 56 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: May 28, 1991, 3:04 PM CDT (20:04 UTC)
Expired: May 28, 1991, 4:00 PM CDT
In force: 56 min
Issued by: NWS Green Bay, WI
Area: Whole counties

County Kewaunee County, WI

What was reported inside it

Time	Report	Where	Remark
May 28, 3:50 PM CDT	Hail 1.75	Kewaunee, 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, 8.1 hours before the alert went out and 46 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: 1199 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 972 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KGRB 282004
TORGRB
WIC009-029-061-282100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO AND SPECIAL MARINE WARNING 
NATIONAL WEATHER SERVICE GREEN BAY WI
304 PM CDT TUE MAY 28 1991

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO AND SPECIAL 
MARINE WARNING EFFECTIVE UNTIL 400 PM CDT FOR PEOPLE IN THE 
FOLLOWING COUNTIES

   IN THE NORTHEAST PART OF WISCONSIN
      NORTHERN BROWN...DOOR...NORTHERN KEWAUNEE...THE BAY OF 
      GREEN BAY

...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE
COUNTIES JUST MENTIONED

A REPORT WAS RECEIVED OF A CONFIRMED TORNADO NORTH OF STURGEON BAY.
RADAR INDICATES  A LINE OF STRONG THUNDERSTORMS FROM NORTHERN DOOR
COUNTY SOUTH INTO NORTHERN BROWN COUNTY. THE LINE WAS MOVING EAST
AT 40 TO 50 MPH AND WAS PRODUCING 1 INCH HAIL AND WIND GUSTS TO
60 MPH. THIS IS A DANGEROUS STORMS.

IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...TAKE SHELTER IN A CULVERT...DITCH...
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

MECIKALSKI

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, May 28, 12:23 PM CDT, 2 hours 41 minutes before

WIZ005-008-009-012-013-281800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1215 PM CDT TUE MAY 28 1991

...SEVERE THUNDERSTORM WATCH UNTIL 5 PM CDT...

A LINE OF STRONG THUNDERSTORMS OVER THE CENTRAL PORTIONS OF THE STATE
WERE MOVING RAPIDLY TO THE EAST AT 50 TO 55 MPH. NORTHEAST AND EAST-
CENTRAL WISCONSIN WILL BE EXPERIENCING THESE THUNDERSTORMS EARLY THIS
AFTERNOON.

HEAVY DOWNPOURS...GUSTY WINDS...HAIL...AND DEADLY LIGHTNING CAN BE
EXPECTED WITH THESE STORMS. STAY AWAY FROM WINDOWS. BOATERS ON AREA
LAKES...THE BAY OF GREEN BAY AND ADJACENT WATERS OF LAKE MICHIGAN SHOULD
SEEK SAFE HARBOR.
PLH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 8:11 PM CDT	Severe Thunderstorm Warning	GRB	Florence, Forest	64 min
May 27, 10:21 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	39 min
May 28, 1:07 PM CDT	Severe Thunderstorm Warning	GRB	Shawano, Waupaca	68 min
May 28, 1:07 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Menominee, Oconto	68 min
May 28, 2:06 PM CDT	Severe Thunderstorm Warning	GRB	Waupaca	14 min
May 28, 2:06 PM CDT	Severe Thunderstorm Warning	GRB	Menominee	14 min
May 28, 2:06 PM CDT	Severe Thunderstorm Warning	GRB	Marinette, Oconto	54 min
May 28, 2:06 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Outagamie, Shawano	54 min
May 28, 3:04 PM CDT	Tornado Warning	GRB	Brown	31 min
May 28, 3:04 PM CDT	Tornado Warning	GRB	Door	31 min
May 28, 3:37 PM CDT	Tornado Warning	GRB	Kewaunee	38 min

Nearby

Tornado Warnings in Wisconsin, 1991 Every tornado warning in 1991 Tornadoes in 1991

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.