Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 32, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Jul 18, 1986, 4:42 PM CDT for Marinette County, Oconto County, Wisconsin. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1986, 4:42 PM CDT (21:42 UTC)
- Expired
- Jul 18, 1986, 5:45 PM CDT
- In force
- 63 min
- Issued by
- NWS Green Bay, WI
- Area
- Whole counties
Counties Marinette County, WI, Oconto 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 12:00Z, 9.7 hours before the alert went out and 77 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 182144 SVRGRB WIC029-075-083-182245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREEN BAY WI 442 PM CDT FRI JUL 18 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHEAST WISCONSIN...DOOR...MARINETTE...NORTHEAST OCONTO AND THE BAY OF GREEN BAY RADAR INDICATES NUMEROUS SEVERE THUNDERSTORMS ALONG A LINE FROM PESHTIGO TO EAST OF STURGEON BAY. ANOTHER SEVERE STORM WAS LOCATED 20 MILES NORTHEAST OF CRIVITZ. MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR. REPORTS FROM HAM RADIO INDICATE HIGH WINDS...HEAVY RAIN...AND LIGHTNING WITH THESE STORMS. THIS STORM MAY PRODUCE DANGEROUS LIGHTNING..STRONG GUSTY WINDS.. AND ROUGH SEAS. ALL BOATERS IN THE WARNED AREA SHOULD SEEK SAFE HARBOR AT ONCE. 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. STONE
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, 23 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, 4:59 PM CDT | Severe Thunderstorm Warning | GRB | Brown | 41 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; the sounding from the Mesonet's radiosonde archive.