WxDecoder

WN43 Weather Lower Granite Dam Heliport

Colfax, WashingtonElevation 652 ftHeliport
OFF-FIELD REFERENCE
Nearest report: KPUW · 14 NM E · More than 1 hour old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KPUW
WIND
110@9
steady
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 252.6° at 2 kt, gusting 3 kt, temperature 5.59C. This observation is older than usual, so treat it with extra caution. Treat this as supplemental, not an aviation observation. Forecast suggests this afternoon partly sunny, high near 63F, low near 41F, 39% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
This Afternoon Partly Sunny 63/41 SE 5 kt – 39%
Monday Light Rain Likely 53/41 W 4 kt – 75%
Tuesday Chance Light Rain 54/40 SW 10 kt 17 kt 69%
Wednesday Light Rain Likely 52/37 S 7 kt – 69%
Thursday Chance Light Rain 52/35 E 4 kt – 27%
Friday Slight Chance Light Rain 49/32 SW 3 kt – 18%
Saturday Partly Sunny then Slight Chance Light Rain 50/32 S 2 kt – 17%

Source: National Weather Service (office OTX). Forecast issued 2256Z.

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 WN43. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 28 ft

H1
Dimensions
28 x 28 ft
Surface
Asphalt (good)
RWY H1

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
652 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0045Z 5:45 PM
Sunrise
1422Z 7:22 AM
Loggable night
0116Z (6:16 PM local) → 1351Z (6:51 AM local)
end of evening to start of morning civil twilight
Position lights required
0045Z (5:45 PM local) → 1422Z (7:22 AM local)
sunset to sunrise (91.209)
Night passenger currency
0145Z (6:45 PM local) → 1322Z (6:22 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

Lower Granite Dam Heliport is in Colfax, Washington. Field elevation 652 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPublicly owned
UsePrivate use
TypeHeliport
ManagerMARTIN T. MENDIOLA
Manager phone509-843-2251
AttendedALL MON-FRI, 0730–1600
CHARTS & AIRSPACE
ICAO / IATAWN43
SectionalSEATTLE
Center (ARTCC)SEATTLE
Flight service (AFSS)SEATTLE
RegionWashington
CountryUnited States
Coordinates46.6613, -117.4380
Distance from city14 NM S
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

WN43 has no on-field report. Nearest reporting station: KPUW (14 NM E, VFR).

KPUW Pullman-Moscow Regional Airport
14 NM E
VFR
KLWS Lewiston Nez Perce County Airport
25 NM SE
VFR
KALW Walla Walla Regional Airport
49 NM SW
VFR
KGEG Spokane International Airport
58 NM N
VFR
KSKA Fairchild Air Force Base
58 NM N
VFR
KSFF Felts Field
62 NM N
VFR
AIRPORT REMARKS

Operational remarks

›800' TERRAIN 1300' SOUTH, 500' PLINE 2600' SE.
›FOR CD CTC SEATTLE ARTCC AT 253-351-3694.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗WN43 on OurAirports
FREQUENTLY ASKED
Does WN43 have a METAR?
No on-field METAR is issued for WN43. This page uses the nearest reporting station as a reference.
Does WN43 have a TAF?
No TAF is issued directly for WN43. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at WN43?
WN43 sits at 652 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for WN43?
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.