Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 39, NWS Green Bay, WI

July 7, 1991Adams County, Juneau County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 7, 1991, 2:12 PM CDT for Adams County, Juneau County, Wisconsin. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Jul 7, 1991, 2:12 PM CDT (19:12 UTC)
Expired
Jul 7, 1991, 3:00 PM CDT
In force
48 min
Issued by
NWS Green Bay, WI
Area
Whole counties

Counties Adams County, WI, Juneau County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.2 hours before the alert went out and 158 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 1991-07-07Temperature 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 1991-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -67 square meters per square second.19395878Sfc1 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
1805 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-67 m²/s²
0-3 km storm-relative helicity
75 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 071930 COR
SVRMSN
WIC001-057-072000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MADISON WI
212 PM CDT SUN JUL 7 1991

THE NATIONAL WEATHER SERVICE IN MADISON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  305 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTH CENTRAL WISCONSIN

   ...ADAMS COUNTY...JUNEAU COUNTY

RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS WITH DAMAGING WINDS
MOVING TOWARDS THE EAST AT 55 TO 60 MPH.


SOME CITIES INCLUDED ARE MAUSTON...ADAMS...AND NEW LISBON.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCkESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
STIMACH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 1:45 PM CDTSevere Thunderstorm WarningGRBIowa, Richland60 min
Jul 7, 1:56 PM CDTSevere Thunderstorm WarningGRBColumbia, Dane, Sauk64 min
Jul 7, 2:26 PM CDTTornado WarningGRBIowa, Sauk34 min
Jul 7, 2:41 PM CDTTornado WarningGRBColumbia, Dane34 min
Jul 7, 2:59 PM CDTTornado WarningGRBDane31 min
Jul 7, 3:07 PM CDTTornado WarningGRBDane33 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1991Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive.