Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 38, NWS Green Bay, WI

July 27, 1986Dane County, Iowa County, Sauk County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 27, 1986, 10:09 PM CDT for Dane County, Iowa County, Sauk County, Wisconsin. It was in force for 21 min.

The area

The counties it named.

The facts

Issued
Jul 27, 1986, 10:09 PM CDT (03:09 UTC)
Expired
Jul 27, 1986, 10:30 PM CDT
In force
21 min
Issued by
NWS Green Bay, WI
Area
Whole counties

Counties Dane County, WI, Iowa County, WI, Sauk 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, 3.2 hours before the alert went out and 202 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 1986-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1274 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 1986-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 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
1274 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
1172 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm 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, Jul 27, 5:39 PM CDT, 4 hours 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
530 PM CDT SUN JUL 27 1986

..STRONG THUNDERSTORMS MOVING THROUGH NORTHERN MARINETTE COUNTY...

AT 530 PM CDT A VERY STRONG THUNDERSTORM WAS LOCATED IN NORTHERN
MARINETTE COUNTY 30 MILES NORTHWEST OF THE CITY OF MARINETTE AND
ANOTHER VERY STRONG THUNDERSTORM WAS LOCATED IN EASTERN FOREST
COUNTY JUST BEGINNING TO MOVE INTO NORTHERN MARINETTE COUNTY.

THE STORMS ARE MOVING EAST AT 25 MPH AND WILL BE MOVING THROUGH
THE NORTHERN HALF OF MARINETTE COUNTY BETWEEN 530 PM AND 630 PM CDT.
THE STORMS WILL PASS TO THE NORTH OF THE CITY OF MARINETTE. STRONG
GUSTY WINDS..DANGEROUS LIGHTNING..HEAVY RAINS.. AND HAIL CAN BE
EXPECTED AS THESE STORMS PASS OVERHEAD.
BB
Special weather statement, Jul 27, 9:49 PM CDT, 20 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 9:14 PM CDTSevere Thunderstorm WarningGRBColumbia46 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.