Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 33, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Jul 18, 1986, 4:59 PM CDT for Brown County, Wisconsin. It was in force for 41 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
- Jul 18, 1986, 4:59 PM CDT (21:59 UTC)
- Expired
- Jul 18, 1986, 5:40 PM CDT
- In force
- 41 min
- Issued by
- NWS Green Bay, WI
- Area
- Whole counties
County Brown 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 |
|---|---|---|---|
| Jul 18, 5:45 PM CDT | Hail 1 | Brown, 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, 10.0 hours before the alert went out and 9 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
- 2603 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 894 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KGRB 182159 SVRGRB WIC009-182240- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREEN BAY WI 459 PM CDT FRI JUL 18 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 540 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTHEAST WISCONSIN...BROWN A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR ALL OF BROWN COUNTY WISCONSIN UNTIL 540 PM CDT. WEATHER RADAR SHOWS A VERY INTENSE THUNDERSTORM 10 MILES SE OF PULASKI WIS MOVING SOUTHEAST AT 30 MPH. OFF DUTY WEATHER SERVICE EMPLOYEE REPORTS GOLF BALL SIZE HAIL AT KUNESH WI 10 MILES SE OF PULASKI. SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS..LARGE HAIL..AND DEADLY LIGHTNING. TORNADOES CAN ALSO DEVELOP FROM SEVERE THUNDERSTORMS. IF THREATENING WEATHER APPROACHES TAKE SHELTER IMMEDIATELY. A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WINDS...LARGE HAIL...AND DANGEROUS LIGHTNING. LOCALLY HEAVY RAINFALL FROM A SEVERE THUNDERSTORM MAY TRIGGER FLASH FLOODING IN LOW LYING OR URBAN AREAS. IF THREATENING WEATHER APPROACHES SEEK SAFE SHELTER.
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 18, 4:19 PM CDT, 40 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 415 PM CDT FRI JUL 18 1986 WEATHER RADAR CURRENTLY INDICATES A VERY STRONG THUNDERSTORM BETWEEN PULASKI AND ABRAMS WISCONSIN ON THE SHAWANO AND OCONTO COUNTY LINE MOVING EAST AT 30 MPH. THIS STORM SHOULD BE REACHING NORTHERN BROWN AND SOUTHERN OCONTO COUNTIES WITHIN THE NEXT HOUR AND COULD PRODUCE STRONG WINDS AND HEAVY RAIN AND POSSIBLE HAIL AS THEY PASS THROUGH. KETOLA
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 2:31 PM CDT | Severe Thunderstorm Warning | GRB | Door | 59 min |
| Jul 18, 3:40 PM CDT | Severe Thunderstorm Warning | GRB | Door | 65 min |
| Jul 18, 4:42 PM CDT | Severe Thunderstorm Warning | GRB | Door | 63 min |
| Jul 18, 4:42 PM CDT | Severe Thunderstorm Warning | GRB | Marinette, Oconto | 63 min |
| Jul 18, 5:43 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Oconto | 62 min |
| Jul 18, 5:43 PM CDT | Severe Thunderstorm Warning | GRB | Kewaunee, Manitowoc | 62 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 1986Every severe thunderstorm warning in 1986
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.