Alert archive / Wisconsin / Tornado Warnings in 1991

Tornado Warning 1, NWS Green Bay, WI

March 27, 1991Dane County, Rock County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Mar 27, 1991, 2:04 PM CST for Dane County, Rock County, Wisconsin. It was in force for 41 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
Mar 27, 1991, 2:04 PM CST (20:04 UTC)
Expired
Mar 27, 1991, 2:45 PM CST
In force
41 min
Issued by
NWS Green Bay, WI
Area
Whole counties

Counties Dane County, WI, Rock County, WI

What was reported inside it

TimeReportWhereRemark
Mar 27, 2:05 PM CSTTornado F2Dane, 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 201 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, Green Bay/Straub, WI at 12:00Z on 1991-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Green Bay/Straub, WI at 12:00Z on 1991-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1516 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
-11 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 272006
TORMSN
WIC025-105-272045-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MADISON WI
204 PM CST WED MAR 27 1991
 
THE NATIONAL WEATHER SERVICE IN MADISON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  245 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL WISCONSIN
 
   ...EASTERN DANE COUNTY...ROCK COUNTY
 
BETWEEN 150 PM AND 200 PM CST TWO CONFIRMED TORNADOES HAVE BEEN
REPORTED IN PARTS OF SOUTH-CENTRAL WISONSIN. THE FIRST WAS LOCATED
JUST SOUTH OF STOUGHTON IN DANE COUNTY AND THE SECOND WAS LOCATED
BETWEEN FOOTVILLE AND COOKSVILLE IN ROCK COUNTY. OTHER POSSIBLE
TORNADOES HAVE BEEN REPORTED IN NORTHWEST ROCK COUNTY BY THE
SHERIFF'S DEPARTMENT.
 
MOVEMENT OF THE TORNADOES WAS NORTHEASTWARD AT 45 MPH.
 
IF YOU LIVE IN COTTAGE GROVE...CAMBRIDGE OR EDGERTON YOU ARE IN THE
PATH OF THESE TORNADOES.
 
 
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.
 
DO NOT USE YOUR CAR TO TRY TO OUTRUmN A TORNADO.  CARS ARE EASILY
TOSSED AROUND BY TORNADO WINDS.  IF YOU ARE CAUGHT IN THE PATH OF
A TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING.  IF NO
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.
 
NOAH

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, Mar 27, 1:31 PM CST, 33 minutes before
WIZ-005-008-009-012-013-272000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
125 PM CST WED MAR 27 1991

...STRONG THUNDERSTORMS OVER EAST-CENTRAL AND NORTHEAST WISCONSIN...
...A TORNADO WATCH REMAINS IN EFFECT FOR A LARGE PART OF NORTHEAST
   AND EAST-CENTRAL WISCONSIN UNTIL 8 PM...
AT 115 PM...NATIONAL WEATHER SERVICE RADAR INDICATED A CLUSTER OF
STRONG THUNDERSTORMS OVER EAST CENTRAL EXTENDING INTO NORTHEASTERN
WISCONSIN. THE STRONGEST THUNDERSTORMS WERE LOCATED OVER SOUTHEAST
WAUSHARA...NORTHERN MARQUETTE AND INTO NORTHERN GREEN LAKE COUNTY.
ANOTHER AREA WAS LOCATED OVER WESTERN PORTAGE AND EASTERN WAUPACA
COUNTIES. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 40 TO 50 MPH
AND WILL BE MOVING THROUGH WINNEBAGO...OUTAGAMIE AND CALUMET
COUNTIES BETWEEN 130 AND 2 PM. THE OTHER AREA WILL MOVE THROUGH
WAUPACA COUNTY BY 2 PM. HAIL...HEAVY RAINS AND STRONG GUSTY WINDS
WILL ACCOMPANY SOME OF THESE STORMS. REMEMBER...THE EN.TIRE AREA
REMAINS UNDER A TORNADO WATCH UNTIL 8PM.     MECIKALSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 26, 11:05 PM CSTSevere Thunderstorm WarningGRBDane40 min
Mar 27, 1:07 PM CSTSevere Thunderstorm WarningGRBDane, Green, Iowa38 min
Mar 27, 1:25 PM CSTSevere Thunderstorm WarningGRBWaushara35 min
Mar 27, 1:41 PM CSTSevere Thunderstorm WarningGRBDane49 min
Mar 27, 1:47 PM CSTSevere Thunderstorm WarningGRBRock43 min
Mar 27, 2:16 PM CSTSevere Thunderstorm WarningGRBBrown, Outagamie44 min
Mar 27, 2:30 PM CSTTornado WarningGRBBrown, Outagamie30 min
Mar 27, 2:58 PM CSTSevere Thunderstorm WarningGRBManitowoc47 min
Mar 27, 2:58 PM CSTSevere Thunderstorm WarningGRBCalumet22 min
Mar 27, 3:08 PM CSTSevere Thunderstorm WarningGRBGreen Lake, Marquette, Waushara37 min

Nearby

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