WxDecoder

WS82 Weather Johnson Island Seaplane Base

Mountain, WisconsinElevation 870 ftSeaplane base
OFF-FIELD REFERENCE
Nearest report: KCLI · 33 NM S · 16 min old
Ceiling 2,800 ft, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KCLI
WIND
360@5
steady
VISIBILITY
10 SM
16.1 km
CEILING
2,800 ft
lowest BKN/OVC
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 20° at 4 kt, visibility 10 SM, temperature 10.1C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight chance rain showers, low near 41F, 45% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Chance Showers And Thunderstorms. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Chance Rain Showers 41 N 2 kt – 45%
Monday Mostly Cloudy 52/35 NE 4 kt – 23%
Tuesday Slight Chance Rain Showers then Partly Sunny 57/44 E 7 kt 16 kt 23%
Wednesday Partly Sunny 69/50 SSW 7 kt – 52%
Thursday Chance Showers And Thunderstorms 68/39 W 4 kt – 52% Thunderstorms in the forecast
Friday Chance Rain Showers 63/44 ESE 3 kt – 49%
Saturday Chance Rain Showers 63/45 SE 4 kt – 50%
Sunday Chance Rain Showers 62 WSW 5 kt – 35%

Source: National Weather Service (office GRB). Forecast issued 0231Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
Crosswind calculator
No runway layout is available for WS82. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

2 runways · longest 4,200 ft

09W/27W
Dimensions
3,600 x 400 ft
Surface
Water
RWY 09W
RWY 27W
16W/34W
Dimensions
4,200 x 400 ft
Surface
Water
RWY 16W
RWY 34W

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Field elevation

Field elevation
870 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2252Z 5:52 PM
Sunrise
1223Z 7:23 AM
Loggable night
2322Z (6:22 PM local) → 1153Z (6:53 AM local)
end of evening to start of morning civil twilight
Position lights required
2252Z (5:52 PM local) → 1223Z (7:23 AM local)
sunset to sunrise (91.209)
Night passenger currency
2352Z (6:52 PM local) → 1123Z (6:23 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Johnson Island Seaplane Base is in Mountain, Wisconsin. Field elevation 870 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSeaplane base
ManagerALVIN D. JOHNSON
Manager phone815-728-9007
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATAWS82
SectionalGREEN BAY
Center (ARTCC)MINNEAPOLIS
Flight service (AFSS)GREEN BAY
RegionWisconsin
CountryUnited States
Coordinates45.1267, -88.4433
Distance from city5 NM SW
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

WS82 has no on-field report. Nearest reporting station: KCLI (33 NM S, MVFR).

KCLI Clintonville Municipal Airport
33 NM S
MVFR
KMNM Menominee–Marinette Twin County Airport
34 NM E
VFR
KGRB Austin Straubel International Airport
41 NM S
VFR
KIMT Ford Airport
44 NM N
VFR
KSUE Door County Cherryland Airport
47 NM E
VFR
KAUW Wausau Downtown Airport
52 NM W
VFR
AIRPORT REMARKS

Operational remarks

›PRVDD CLEAR 20:1 APPROACHES, AND YOU REFERENCE (FAR) 91.115, RIGHT OF WAY RULES; WATER OPERATIONS.
›FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.
›JOHNSON ISLAND HAS DOCKING DURING SUMMER MONTHS FOR VISITORS.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗WS82 on OurAirports
FREQUENTLY ASKED
Does WS82 have a METAR?
No on-field METAR is issued for WS82. This page uses the nearest reporting station as a reference.
Does WS82 have a TAF?
No TAF is issued directly for WS82. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at WS82?
WS82 sits at 870 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for WS82?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.