Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 9, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at May 27, 1987, 2:16 PM CDT for Dane County, Green County, Rock County, Wisconsin. It was in force for 59 min. 2 reports 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
- May 27, 1987, 2:16 PM CDT (19:16 UTC)
- Expired
- May 27, 1987, 3:15 PM CDT
- In force
- 59 min
- Issued by
- NWS Green Bay, WI
- Area
- Whole counties
Counties Dane County, WI, Green County, WI, Rock 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 |
|---|---|---|---|
| May 27, 2:40 PM CDT | Thunderstorm Wind 0 | Green, WI | |
| May 27, 3:01 PM CDT | Thunderstorm Wind 59 | 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, 7.3 hours before the alert went out and 212 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
- 94 J/kg
- Mixed-layer CIN
- -163 J/kg
- Mixed-layer LCL
- 1262 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 123 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 271916 SVRMSN WIC021-025-045-047-077-105-272015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MADISON WI 216 PM CDT WED MAY 27 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 315 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTH CENTRAL WISCONSIN...COLUMBIA...DANE...GREEN...GREEN-LAKE... MARQUETTE AND ROCK AT 213 PM CDT RADAR INDICATED A LINE OF THUNDERSTORMS FROM WISCONSIN DELLS TO 5 MILES WEST OF MARTINTOWN OR 50 MILES SOUTHWEST OF MADISON. MOVEMENT WAS EAST AT 20 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. PRZEKURAT
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 1:02 PM CDT | Severe Thunderstorm Warning | GRB | Iowa | 58 min |
| May 27, 2:01 PM CDT | Severe Thunderstorm Warning | GRB | Sauk | 44 min |
| May 27, 2:16 PM CDT | Severe Thunderstorm Warning | GRB | Columbia, Green Lake, Marquette | 59 min |
| May 27, 3:23 PM CDT | Severe Thunderstorm Warning | GRB | Columbia, Dane, Green, Rock | 52 min |
| May 27, 3:23 PM CDT | Severe Thunderstorm Warning | GRB | Green Lake | 52 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.