WxDecoder

1WI5 Weather Beaver Dam Lake Seaplane Base

Randolph, WisconsinElevation 871 ftSeaplane base
OFF-FIELD REFERENCE
Nearest report: KUNU · 12 NM SE · 21 min old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KUNU
WIND
Calm
no steady wind
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
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 330° at 3 kt, visibility 10 SM, temperature 13.4C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy, low near 47F, 3% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Showers And Thunderstorms Likely. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy 47 N 4 kt – 3%
Monday Mostly Cloudy 57/43 NE 9 kt – 10%
Tuesday Partly Sunny 65/51 SE 9 kt – 10%
Wednesday Mostly Sunny 72/54 S 13 kt – 57%
Thursday Showers And Thunderstorms Likely 70/48 SW 9 kt – 57% Thunderstorms in the forecast
Friday Chance Rain Showers 69/51 SE 4 kt – 45%
Saturday Chance Rain Showers 68/51 S 9 kt – 52%
Sunday Chance Rain Showers 65 W 9 kt – 34%

Source: National Weather Service (office MKX). Forecast issued 0236Z.

Radar

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

OUR HEADSET PICK · NOT SPONSORED

DC

David Clark DC ONE-X

Not sponsored, just the headset we'd buy ourselves: the DC ONE-X, with hybrid noise canceling, Bluetooth, and 30+ hour battery. And David Clark's A+ customer service is the real reason we recommend them.

Visit David Clark
RUNWAYS & WIND
Crosswind calculator
No runway layout is available for 1WI5. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

3 runways · longest 10,000 ft

09W/27W
Dimensions
5,000 x 1,000 ft
Surface
Water
RWY 09W
Traffic patternLeft
RWY 27W
Traffic patternLeft
05W/23W
Dimensions
10,000 x 1,000 ft
Surface
Water
RWY 05W
Traffic patternLeft
RWY 23W
Traffic patternLeft
18W/36W
Dimensions
5,000 x 1,000 ft
Surface
Water
RWY 18W
Traffic patternLeft
RWY 36W
Traffic patternLeft

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
871 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2257Z 5:57 PM
Sunrise
1223Z 7:23 AM
Loggable night
2326Z (6:26 PM local) → 1153Z (6:53 AM local)
end of evening to start of morning civil twilight
Position lights required
2257Z (5:57 PM local) → 1223Z (7:23 AM local)
sunset to sunrise (91.209)
Night passenger currency
2357Z (6:57 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

Beaver Dam Lake Seaplane Base is in Randolph, Wisconsin. Field elevation 871 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSeaplane base
ManagerMICHAEL A. BURBACK
Manager phone414-326-3158
AttendedDaily, DALGT
CHARTS & AIRSPACE
ICAO / IATA1WI5
SectionalCHICAGO
Center (ARTCC)CHICAGO
Flight service (AFSS)GREEN BAY
RegionWisconsin
CountryUnited States
Coordinates43.5150, -88.9526
Distance from city3 NM SE
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

1WI5 has no on-field report. Nearest reporting station: KUNU (12 NM SE, VFR).

KUNU Dodge County Airport
12 NM SE
VFR
KFLD Fond du Lac County Airport
25 NM NE
VFR
KMSN Dane County Regional Truax Field
28 NM SW
VFR
KOSH Wittman Regional Airport
33 NM NE
VFR
KETB West Bend Municipal Airport
36 NM E
VFR
KUES Waukesha County Airport
42 NM SE
VFR
AIRPORT REMARKS

Operational remarks

›CONCRETE RAMP UP ONTO SHORE; TIE DOWNS ON SHORE.
›OWNER INDICATES PILOTS LAND AT OWN RISK OR EMERGENCY.
›FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
›IN BEAVER DAM ONE 414-326-3158.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗1WI5 on OurAirports
FREQUENTLY ASKED
Does 1WI5 have a METAR?
No on-field METAR is issued for 1WI5. This page uses the nearest reporting station as a reference.
Does 1WI5 have a TAF?
No TAF is issued directly for 1WI5. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 1WI5?
1WI5 sits at 871 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 1WI5?
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.