Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 41, NWS Green Bay, WI

July 29, 1987Green Lake County, Marquette County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 29, 1987, 1:25 PM CDT for Green Lake County, Marquette County, Wisconsin. It was in force for 50 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: Jul 29, 1987, 1:25 PM CDT (18:25 UTC)
Expired: Jul 29, 1987, 2:15 PM CDT
In force: 50 min
Issued by: NWS Green Bay, WI
Area: Whole counties

Counties Green Lake County, WI, Marquette County, WI

The radar

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

What was reported inside it

Time	Report	Where	Remark
Jul 29, 1:45 PM CDT	Thunderstorm Wind 0	Green Lake, 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, 6.4 hours before the alert went out and 116 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 633 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 789 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSN 291825 RRA
SVRMSN
WIC047-077-137-291915-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MADISON WI
125 PM CDT WED JUL 29 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 215 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTH CENTRAL WISCONSIN...GREEN-LAKE...MARQUETTE AND WAUSHARA

AT 120 PM CDT A SEVERE THUNDERSTORM WAS LOCATED ABOUT 10 MILES WEST
OF WESTFIELD WISCONSIN MOVING TO THE SOUTHEAST AT ABOUT 30 MPH.
THIS STORM SHOULD AFFECT WAUTOMA, MONTELLO, GREEN LAKE AND THE
BERLIN AREAS AS IT MOVE TO THE SOUTHEAST.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS..LARGE HAIL AND DANGEROUS
LIGHTNING. IF THREATENING WEATHER APPROACHES TAKE SHELTER.

REMEMBER..SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
A TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT.

ADDISON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 1:25 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	27 min
Jul 29, 6:17 PM CDT	Severe Thunderstorm Warning	GRB	Sauk	43 min
Jul 29, 6:37 PM CDT	Severe Thunderstorm Warning	GRB	Columbia, Dane	53 min
Jul 29, 6:54 PM CDT	Severe Thunderstorm Warning	GRB	Rock	51 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1987 Every severe thunderstorm warning in 1987

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.