W55/LKE Weather Kenmore Air Harbor Seaplane Base

Seattle, WashingtonElevation 14 ftSeaplane base

OFF-FIELD REFERENCE

Nearest report: KBFI · 6 NM S · 36 min old

Ceiling 7,000 ft, visibility 10 SM.

No on-field report, so no field flight category. Conditions at the field may differ.

OFF-FIELD REFERENCE · KBFI

WIND

100@3

steady

VISIBILITY

10 SM

16.1 km

CEILING

7,000 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 88° at 4 kt, temperature 8.33C. This observation is older than usual, so treat it with extra caution. Treat this as supplemental, not an aviation observation. Forecast suggests tonight chance light rain, low near 46F, 48% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES

Thunderstorms in the forecastWeather.gov

Wednesday: Showers And Thunderstorms. Watch for developing convection and plan alternates.

Day	Conditions	Temp F	Wind	Gusts	Precip	Pilot note
Tonight	Chance Light Rain	46	NNE 2 kt	–	48%
Monday	Chance Light Rain	55/47	NNE 2 kt	–	44%
Tuesday	Light Rain Likely	56/45	SSW 8 kt	–	87%
Wednesday	Showers And Thunderstorms	53/42	SSW 9 kt	–	89%	Thunderstorms in the forecast
Thursday	Light Rain Likely	51/40	S 5 kt	–	68%
Friday	Slight Chance Light Rain	51/38	NNE 4 kt	–	19%
Saturday	Mostly Sunny	52/39	NNE 3 kt	–	5%
Sunday	Partly Sunny	53	ENE 3 kt	–	14%

Source: National Weather Service (office SEW). Forecast issued 0129Z.

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 W55. Enter a runway number or heading to estimate wind components.

RUNWAYS

Runway detail & declared distances

1 runway · longest 5,000 ft

16W/34W

Dimensions

5,000 x 500 ft

Surface

Water

RWY 16W

Traffic patternLeft

RWY 34W

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

14 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset

0103Z 6:03 PM

Sunrise

1444Z 7:44 AM

Loggable night

0135Z (6:35 PM local) → 1412Z (7:12 AM local)

end of evening to start of morning civil twilight

Position lights required

0103Z (6:03 PM local) → 1444Z (7:44 AM local)

sunset to sunrise (91.209)

Night passenger currency

0203Z (7:03 PM local) → 1344Z (6:44 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

Kenmore Air Harbor Seaplane Base is in Seattle, Washington. Field elevation 14 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT

OwnershipPrivately owned

UseOpen to the public

TypeSeaplane base

Airline serviceYes

ManagerSARAH FELLER

Manager phone425-486-1257

AttendedDaily, DAWN–DUSK

CHARTS & AIRSPACE

ICAO / IATALKE

SectionalSEATTLE

Center (ARTCC)SEATTLE

Flight service (AFSS)SEATTLE

RegionWashington

CountryUnited States

Coordinates47.6290, -122.3390

Distance from city1 NM N

SERVICES & LIGHTING

Control towerNon-towered

CTAF122.900

FREQUENCIES

Communications

122.900

CTAF

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

W55 traffic patterns

2026-06-12 to 2026-10-23, 70 days observed · data 2026-10-23

High confidence

TRAFFIC VOLUME (30-DAY)

AVG LANDINGS/DAY

12.6

AVG OPS/DAY

17.4

Operations trend (18 days)

Busiest day: Sun · Busiest month: Jun

FLEET MIX

Unknown 84%Piston single 9%Turboprop 7%

Fleet composition unclear from available data.

TOP AIRCRAFT TYPES

›DH3T (Unknown) · ~208 landings/mo

›DH2T (Unknown) · ~73 landings/mo

›T206 (Unknown) · ~38 landings/mo

›C172 (Piston single) · ~33 landings/mo

›DHC2 (Unknown) · ~21 landings/mo

LIKELY BASED AIRCRAFT

Low-confidence estimate

Aircraft likely based near this airport (estimate), mostly aircraft of unknown type.

›DH3T (Unknown)

›C172 (Piston single)

›DH2T (Unknown)

›DHC2 (Unknown)

›T206 (Unknown)

This is an estimate based on repeated flight patterns, not registration data. Do not rely on it to identify specific aircraft or owners.

Data limitations (4)

›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.

›Some aircraft do not transmit usable ADS-B and are not counted.

›Aircraft types and based estimates are inferred and may be wrong.

›This is not official ATC, FAA, or airport data.

NEARBY AIRPORTS

Weather reference stations

W55 has no on-field report. Nearest reporting station: KBFI (6 NM S, VFR).

KBFI King County International Airport - Boeing Field

6 NM S

VFR

KRNT Renton Municipal Airport

10 NM SE

VFR

KSEA Seattle–Tacoma International Airport

11 NM S

VFR

KPAE Seattle Paine Field International Airport

17 NM N

VFR

KPWT Bremerton National Airport

19 NM SW

VFR

KTIW Tacoma Narrows Airport

24 NM SW

VFR

AIRPORT REMARKS

Operational remarks

›AIRPORT HAS SCHEDULED AIRLINE SERVICE

›WHEN CONSISTENT WITH SAFETY, AVOID 'ON THE STEP' OPERATIONS SOUTH AND WEST OF RED BUOY.

›ALL TAKEOFFS & LANDINGS IN CENTER OF LAKE.

›DO NOT TAXI CLOSER THAN 200 FT FM SHORELINE EXCP IN CLOSE PROXIMITY TO KENMORE AIR HARBOR.

›ESTABD PRIOR 15 MAY 1959.

›CALL 425-486-1257 X2010 FOR APVL AT LEAST 3 HRS PRIOR TO ARR. DOCKING FEE.

›NIGHT LANDINGS NOT RECOMMENDED DUE TO UNLIGHTED SMALL WATERCRAFT.

›KITE FLYING IN PUBLIC PARK AT N END OF ARPT AND UAVS OPERATING AT THE N AND S ENDS.

›SPECIAL NOISE ABATEMENT RULES IN EFFECT CONTACT OPERATOR FOR PATTERN INFORMATION.

›APCH SURFACE DATA NOT CHECKED.

›OWNERS: GREEN HORNET ENTERPRISES LLC AND MUNRO BANKS HOLDCO INC.

›INCRD BOATING OPNS ON LAKE MAY 15 THRU SEP 15.

›FIVE TEMPO BUOYS HAVE BEEN PLACED ALONG THE NORTH-SOUTH CNTRLN OF LAKE UNION, EACH SEPARATED BY APPROXIMATELY 750FT, AND MARK THE APRX LOCATION OF THE PREFERRED SEAPLANE OPR AREA. THE BUOYS HAVE A YELLOW FLASHING LIGHT THAT CAN BE ACTVT BY FIVE CLICKS ON 122.9, TO ALERT BOATERS OF AN IMPENDING SEAPLANE TKOF OR LANDING. RUN TIME ON THE LIGHTS IS 60 SECONDS. THE BUOY/LIGHT SYSTEM IS ADVISORY ONLY, AND BOATERS ARE NOT REQUIRED TO CLEAR THE AREA. THE BUOYS WILL BE REMOVED WITHIN FIVE DAYS FOLLOWING LABOR DAY, OR EARLIER.

›FOR CD CTC SEATTLE APCH AT 206-214-4722.

›KENMORE AIR LAKE UNION DOCK FREQ 130.30.

›EXTN 2240.

›FUEL AVBL EMERG ONLY.

›$150 TRANSIT DOCKING FEE.

OFFICIAL LINKS & SOURCES

↗Search NOTAMs (official FAA NOTAM Search)

↗Official airport website

↗Wikipedia

↗W55 on OurAirports

FREQUENTLY ASKED

Does W55 have a METAR?

No on-field METAR is issued for W55. This page uses the nearest reporting station as a reference.

Does W55 have a TAF?

No TAF is issued directly for W55. Use the nearest TAF-issuing field as a planning reference.

What is the field elevation at W55?

W55 sits at 14 ft MSL, which factors into the density-altitude estimate on this page.

Is this an official preflight weather briefing for W55?

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.