Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 87, NWS Green Bay, WI

September 9, 1994Dane County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Sep 9, 1994, 11:57 AM CDT for Dane County, Wisconsin. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Sep 9, 1994, 11:57 AM CDT (16:57 UTC)
Expired
Sep 9, 1994, 12:45 PM CDT
In force
48 min
Issued by
NWS Green Bay, WI
Area
Whole counties

County Dane County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 5.0 hours before the alert went out and 189 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 1994-09-09Temperature 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 1994-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1569 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
108 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 
WUUS1 KMSN 091659 RRA
SVRMSN
WIC025-091745-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MADISON WI
1157 AM CDT FRI SEP 9 1994
 
THE NATIONAL WEATHER SERVICE IN MADISON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1245 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL WISCONSIN
 
   ...DANE COUNTY
 
AT 1155 AM CDT WEATHER SERVICE RADAR DETECTED A SEVERE THUNDERSTORM EAST
OF CROSS PLAINS...OR 10 MILES WEST OF MADISON. MARBLE SIZED HAIL WAS
REPORTED WITH THIS STORM.
 
THE STORM WAS MOVING TO THE EAST AT 25 MPH.
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
MC MAHON

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 9:51 AM CDTSevere Thunderstorm WarningGRBRichland54 min
Sep 9, 10:49 AM CDTSevere Thunderstorm WarningGRBSauk56 min
Sep 9, 11:04 AM CDTSevere Thunderstorm WarningGRBJuneau56 min
Sep 9, 12:20 PM CDTTornado WarningGRBDane40 min
Sep 9, 1:12 PM CDTSevere Thunderstorm WarningGRBRock48 min
Sep 9, 6:34 PM CDTSevere Thunderstorm WarningGRBJuneau26 min
Sep 9, 6:59 PM CDTSevere Thunderstorm WarningGRBJuneau46 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1994Every severe thunderstorm warning in 1994

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.