Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 53, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Aug 16, 1987, 6:02 PM CDT for Dane County, Wisconsin. It was in force for 43 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
- Aug 16, 1987, 6:02 PM CDT (23:02 UTC)
- Expired
- Aug 16, 1987, 6:45 PM CDT
- In force
- 43 min
- Issued by
- NWS Green Bay, WI
- Area
- Whole counties
County Dane 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 |
|---|---|---|---|
| Aug 16, 6:20 PM CDT | Thunderstorm Wind 64 | Dane, 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, 11.0 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.
- Mixed-layer CAPE
- 1791 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 577 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSN 162302 SVRMSN WIC025-162345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MADISON WI 602 PM CDT SUN AUG 16 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 645 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTH CENTRAL WISCONSIN...EASTERN DANE AT 555 PM CDT RADAR DETECTED A SEVERE THUNDERSTORM 1 MILE EAST OF MADISON MOVING TOWARD THE EAST AT 30 MPH. THIS WARNING INCLUDES THE CITY OF MADISON. 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. PRZEKURAT
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, Aug 16, 12:21 PM CDT, 5 hours 41 minutes before
SPECIAL WEATHER AND MARINE STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 1220 PM CDT SUN AUG 16 1987 ...STRONG THUNDERSTORMS WITH HEAVY RAIN MOVING TOWARD THE WEST SHORE OF LAKE MICHIGAN... AT 1215 PM CDT RADAR SHOWS A LINE OF STRONG THUNDERSTORMS WITH HEAVY RAIN IN SOUTHERN DOOR COUNTY EXTENDING SOUTH THRU KEWAUNEE AND MANITOWOC COUNTIES. THESE STORMS ARE MOVING EAST AT 40 MPH AND WILL BE MOVING OUT OVER LAKE MICHIGAN BY 1230 PM CDT. HEAVY RAIN...GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING CAN BE EXPECTED WITH THESE STORMS. BOATERS ALONG THE WEST SHORE OF LAKE MICHIGAN...SEEK SAFE HARBOR AT ONCE. HELMAN
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 5:42 PM CDT | Severe Thunderstorm Warning | GRB | Columbia | 33 min |
| Aug 16, 6:22 PM CDT | Flash Flood Warning | GRB | Dane | 98 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.