Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 3, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at May 11, 1987, 12:29 PM CDT for Milwaukee County, Wisconsin. It was in force for 19 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
- May 11, 1987, 12:29 PM CDT (17:29 UTC)
- Expired
- May 11, 1987, 12:48 PM CDT
- In force
- 19 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
County Milwaukee 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 11, 12:35 PM CDT | Hail 0.75 | Milwaukee, 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, 5.5 hours before the alert went out and 163 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
- 27 J/kg
- Mixed-layer CIN
- -309 J/kg
- Mixed-layer LCL
- 1171 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 259 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 KMKE 111729 SVRMKE WIC079-111815- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE MILWAUKEE WI 1229 PM CDT MON MAY 11 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 115 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTHEAST WISCONSIN...MILWAUKEE ...INCLUDING THE ADJACENT COASTAL WATERS OF ..LAKE MICHIGAN AT 1225 PM HALF INCH TO 3/4 INCH HAIL WAS REPORTED NEAR 93RD AND SILVER SPRING IN MILWAUKEE. HAIL WAS ALSO REPORTED AT TIMMERMAN FIELD. SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS..LARGE HAIL AND DANGEROUS LIGHTNING. IF THREATENING WEATHER APPROACHES TAKE SHELTER. HENTZ
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, May 11, 11:56 AM CDT, 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE WI 1155 AM CDT MON MAY 11 1987 ...THUNDERSTORM DEVELOPING WEST OF MILWAUKEE... AT 1155 AM WEATHER RADAR INDICATED A RAPIDLY DEVELOPING THUNDERSTORM 25 MILES WEST OF MILWAUKEE IN NORTHWEST WAUKESHA COUNTY JUST TO THE NORTHWEST OF THE CITY OF WAUKESHA. THE THUNDERSTORM WAS MOVING TO THE EAST AT 25 MILES AN HOUR. CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF STRONG THUNDERSTORMS THIS AFTERNOON AHEAD OF A COLD FRONT WHICH WILL MOVE THROUGH SOUTHEAST WISCONSIN BY EVENING. HENTZ
Special weather statement, May 11, 12:00 PM CDT, 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE WI 1159 AM CDT MON MAY 11 1987 ...THUNDERSTORM DEVELOPING WEST OF MILWAUKEE... AT 1157 AM THE WAUKESHA COUNTY SHERIFF REPORTED MARBLE SIZED HAIL JUST NORTH OF PEAWUAKEE NEAR HIGHWAY 16. WEATHER RADAR CONTINUED TO INDICATE A RAPIDLY DEVELOPING THUNDERSTORM 25 MILES WEST OF MILWAUKEE IN NORTHWEST WAUKESHA COUNTY JUST TO THE NORTHWEST OF THE CITY OF WAUKESHA. THE THUNDERSTORM WAS MOVING TO THE EAST AT 25 MILES AN HOUR. CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF STRONG THUNDERSTORMS THIS AFTERNOON AHEAD OF A COLD FRONT WHICH WILL MOVE THROUGH SOUTHEAST WISCONSIN BY EVENING. HENTZ
Special weather statement, May 11, 12:15 PM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE WI 1215 PM CDT MON MAY 11 1987 ...STRONG THUNDERSTORM MOVING INTO MILWAUKEE... AT 1215 PM WEATHER RADAR INDICATED A STRONG THUNDERSTORM MOVING INTO THE MILWAUKEE METROPLOITAN AREA. AT NOON PEA TO MARBLE SIZED HAIL WAS REPORTED IN PEAWAUKEE. THE STORM WAS MOVING EAST AT 25 MILES AN HOUR AND WILL REACH THE SHORE OF LAKE MICHIGAN AFTER 1230 PM. BOATERS SHOULD BE AWARE OF THIS APPROACHING STORM AND TAKE THE NECESSARY PRECAUTIONS. CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF STRONG THUNDERSTORMS THIS AFTERNOON. OTHER SCATTERED THUNDERSTORMS WERE DEVELOPING TO THE SOUTHWEST IN SOUTHWEST WAUKESHA AND WESTERN WALWORTH COUNTIES. HENTZ
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 7:12 PM CDT | Severe Thunderstorm Warning | MKX | Price | 48 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.