WxDecoder

WN77 Weather Wnp-2 Plant Support Facility Heliport

Richland, WashingtonElevation 460 ftHeliport
OFF-FIELD REFERENCE
Nearest report: KRLD · 10 NM S · 13 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 · KRLD
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 calm, visibility 10 SM, temperature 9C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy then slight chance rain showers, low near 36F, 21% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy then Slight Chance Rain Showers 36 W 6 kt – 21%
Monday Slight Chance Rain Showers then Partly Sunny 57/36 S 6 kt – 21%
Tuesday Mostly Sunny 61/36 SW 9 kt 18 kt 8%
Wednesday Partly Sunny 57/32 SW 12 kt – 15%
Thursday Slight Chance Rain Showers then Mostly Sunny 53/29 W 5 kt – 21%
Friday Slight Chance Rain Showers then Mostly Sunny 52/28 NW 6 kt – 21%
Saturday Mostly Sunny then Slight Chance Rain Showers 51/27 NW 4 kt – 18%
Sunday Mostly Sunny 51 NW 4 kt – 13%

Source: National Weather Service (office PDT). Forecast issued 0428Z.

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 WN77. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 60 ft

H1
Dimensions
60 x 60 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
460 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0053Z 5:53 PM
Sunrise
1430Z 7:30 AM
Loggable night
0124Z (6:24 PM local) → 1359Z (6:59 AM local)
end of evening to start of morning civil twilight
Position lights required
0053Z (5:53 PM local) → 1430Z (7:30 AM local)
sunset to sunrise (91.209)
Night passenger currency
0153Z (6:53 PM local) → 1330Z (6:30 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

Wnp-2 Plant Support Facility Heliport is in Richland, Washington. Field elevation 460 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPublicly owned
UsePrivate use
TypeHeliport
ManagerSE KHOUNNALA
Manager phone(509) 377-8639
AttendedALL MON-THUR, 0700–1600
CHARTS & AIRSPACE
ICAO / IATAWN77
SectionalSEATTLE
Center (ARTCC)SEATTLE
Flight service (AFSS)SEATTLE
RegionWashington
CountryUnited States
Coordinates46.4643, -119.3410
Distance from city10 NM N
SERVICES & LIGHTING
Control towerNon-towered
Field lightingSee remarks
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

WN77 has no on-field report. Nearest reporting station: KRLD (10 NM S, VFR).

KRLD Richland Airport
10 NM S
VFR
KPSC Tri Cities Airport
15 NM SE
VFR
KHRI Hermiston Municipal Airport
38 NM S
VFR
KMWH Grant County International Airport
45 NM N
VFR
KALW Walla Walla Regional Airport
49 NM SE
VFR
KYKM Yakima Air Terminal McAllister Field
50 NM W
VFR
AIRPORT REMARKS

Operational remarks

›FOR CD CTC CHINOOK APCH AT 509-542-4209, WHEN APCH CLSD CTC SEATTLE ARTCC AT 253-351-3694.
›FOR PERIMETER LIGHTS PHONE 509-946-2635.
›FILED FOR RECORD PURPOSES ONLY.
›LAND LEASED BY ENERGY NORTHWEST.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗WN77 on OurAirports
FREQUENTLY ASKED
Does WN77 have a METAR?
No on-field METAR is issued for WN77. This page uses the nearest reporting station as a reference.
Does WN77 have a TAF?
No TAF is issued directly for WN77. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at WN77?
WN77 sits at 460 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for WN77?
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.