Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 22, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Jul 2, 1987, 7:11 PM CDT for Columbia County, Wisconsin. It was in force for 34 min.
The area
The counties it named.
The facts
- Issued
- Jul 2, 1987, 7:11 PM CDT (00:11 UTC)
- Expired
- Jul 2, 1987, 7:45 PM CDT
- In force
- 34 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, 0.2 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.
- Mixed-layer CAPE
- 172 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1434 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSN 030011 SVRMSN WIC021-030045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MADISON WI 711 PM CDT THU JUL 2 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 745 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTH CENTRAL WISCONSIN...COLUMBIA AT 655 PM CDT COLUMBIA COUNTY SHERIFF REPORTED WINDS OF 50 TO 60 MPH ABOUT 5 MILES WEST OF POYNETTE OR ABOUT 18 MILES NORTH OF MADISON. THE ASSOCIATED STORM WAS MOVING TO THE EAST AT ABOUT 40 MPH. 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
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 2, 6:16 PM CDT, 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 615PM CDT THU JUL 2 1987 AT 615PM CDT STRONG THUNDERSTORMS HAVE ENTERED NORTHERN OCONTO COUNTY SOUTHWEST THRU MEMOMINEE COUNTY AND WEST SHAWANO COUNTY. THE STRONGEST THUNDERSTORM WAS NEAR WITTENBERG IN WEST SHAWANO COUNTY. THESE STORMS WERE MOVING TO THE SOUTHEAST AT 30 MPH AND WILL BE AFFECTING MOST OF THE ABOVE MENTION COUNTIES WITHIN THE HOUR. BRIEF HEAVY DOWNPOURS ...STRONG GUSTY TWINDS...DANGEROUS LIGHTNING AND SOME HAIL CAN BE EXPECTED WITH THE PASSAGE OF THESE STORMS. PLH
Special weather statement, Jul 2, 7:03 PM CDT, 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 7PM CDT THU JUL 2 1987 ...STRONG THUNDERSTORMS CONTINUE OVER OCONTO...SHAWANO AND WAUPACA COUNTIES... AT 7PM WEATHER SERVICE RADAR SHOWS A LINE OF THUNDERSTORMS FROM SOUTHERN MARINETTE COUNTY THRU CENTRAL OCONTO COUNTY THEN SOUTHWEST THRU CENTRAL AND EASTERN SHAWANO COUNTY AND NORTH WAUPACA COUNTY. THE STRONGEST STORMS IN THE LINE WERE IN EASTERN SHAWANO COUNTY. THESE STORMS WERE MOVING TO THE SOUTHEAST AT 30 MPH AND WILL BE AFFECTING BROWN AND OUTAGAMIE COUNTIES AND THE BAY OF GREEN BAY BY 730PM CDT. DANGEROUS LIGHTNING...HEAVY RAINS...SOME HAIL AND GUSTY WINDS CAN BE EXPECTED WITH THE PASSAGE OF THESE THUNDERSTORMS. PLH
Nearby
Severe Thunderstorm Warnings in Wisconsin, 1987Every 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; the sounding from the Mesonet's radiosonde archive.