Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 41, NWS Green Bay, WI

September 26, 1986Columbia County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Sep 26, 1986, 6:35 AM CDT for Columbia County, Wisconsin. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Sep 26, 1986, 6:35 AM CDT (11:35 UTC)
Expired
Sep 26, 1986, 7:00 AM CDT
In force
25 min
Issued by
NWS Green Bay, WI
Area
Whole counties

County Columbia County, WI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 11.6 hours before the alert went out and 150 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 00:00Z on 1986-09-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1638 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 1986-09-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 168 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
1638 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
911 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
168 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
1.6
Supercell composite
9.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSN 261136 COR
SVRMSN
WIC021-261300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MADISON WI
635 AM CDT FRI SEP 26 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 700 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY OF

SOUTH CENTRAL WISCONSIN...COLUMBIA

AT 610 AM CDT
RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF COLUMBUS AND
ANOTHER 8 MILES SOUTH OF PORTAGE MOVING TO TH!E NORTHEAT AT
25 MILES AN HOUR

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND
DEADLY LIGHTNING. TORNADOES CAN ALSO DEVELOP FROM SEVERE
THUNDERSTORMS. IF THREATENING WEATHER APPROACHES TAKE SHELTER
IMMEDIATELY.

SWENSON

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 26, 7:11 AM CDTSevere Thunderstorm WarningGRBGreen Lake, Marquette34 min
Sep 26, 7:46 AM CDTSevere Thunderstorm WarningGRBWaushara14 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1986Every severe thunderstorm warning in 1986

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.