Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 13, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at May 27, 1987, 9:19 PM CDT for Dane County, Iowa County, Wisconsin. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- May 27, 1987, 9:19 PM CDT (02:19 UTC)
- Expired
- May 27, 1987, 10:00 PM CDT
- In force
- 41 min
- Issued by
- NWS Green Bay, WI
- Area
- Whole counties
Counties Dane County, WI, Iowa 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, 2.3 hours before the alert went out and 210 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
- 397 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 730 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSN 280219 SVRMSN WIC025-049-280300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MADISON WI 919 PM CDT WED MAY 27 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTH CENTRAL WISCONSIN...DANE AND EASTERN IOWA AT 908 PM CDT A LINE OF SEVERE THUNDERSTORMS WAS LOCATED FROM DARLINGTON TO 10 MILES NORTHEAST OF MONROE OR ABOUT 60 MILES SOUTHWEST TO 40 MILES SOUTH-SOUTHWEST OF MADISON. THIS LINE OF THUNDERSTORMS WAS MOVING TO THE NORTHEAST AT ABOUT 45 MPH. AT 855 PM CDT WIND DAMAGE WAS REPORTED AT MONROE AND TO THE SOUTH OF MONROE INTO NORTHERN ILLINOIS. 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, May 27, 5:24 PM CDT, 3 hours 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 525 PM CDT WED MAY 27 1987 ...TORNAD WATCH IN EFFECT UNTIL 8 PM CDT.... ...LINE OF INTENSE THUNDERSTORMS MOVING ACROSS NORTHEAST WISCONSIN.. AT 520 PM CDT RADAR SHOWED A LINE OF INTENSE THUNDERSTORMS EXTENDING FROM THE WISCONSIN...MICHIGAN BORDER IN WESTERN MARINETTE COUNTY THROUGH OCONTO...BROWN...CALUMET AND ENTERNING MANITOWOC COUNTY. THIS LINE OF STORMS IS MOVING EAST NORTHEAST AT AROUND 35 MILES AN HOUR. VERY HEAVY RAINS..FREQUENT INTENSE LIGHTNING AND WINDS IN THE 40 TO 50 MPH RANGE HAVE BEEN REPORTED WITH THESE STORMS...ALSO SOME SMALL HAIL. THIS LINE OF INTENSE THUNDERSTORMS WILL MOVE ACROSS NORTHEAST WISCONSIN TAND OVER THE BAY OF GREEN BAY AND DOOR COUNTY BY 6:30 PM CDT. BOATERS ON THE BAY OF GREEN BAY SHOULD SEEK SAFE HARBOR NOW. OTHERS IN THE PATH OF THESE STORMS SHOULD BE PREPARED TO SEEK SAFE SHELTER.
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 8:43 PM CDT | Severe Thunderstorm Warning | GRB | Green | 47 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; the sounding from the Mesonet's radiosonde archive.