WxDecoder

US-3746 Weather Grant Village Helipad

Mammoth, WyomingElevation 7,848 ftHeliport
OFF-FIELD REFERENCE
Nearest report: KWYS · 30 NM NW · 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 · KWYS
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, temperature -2.2C. This observation is older than usual, so treat it with extra caution. Treat this as supplemental, not an aviation observation. Forecast suggests monday patchy fog then partly sunny, high near 47F, low near 17F, 98% chance of precipitation. Key risks: strong winds in the forecast.

PILOT WEATHER NOTES
Strong winds in the forecastWeather.gov
Tuesday: winds up to 33 kt. Re-check crosswind components closer to departure.
DayConditionsTemp FWindGustsPrecipPilot note
Monday Patchy Fog then Partly Sunny 47/17 SSW 10 kt – 98%
Tuesday Snow Showers Likely 34/15 SW 15 kt 33 kt 71% Strong winds in the forecast
Wednesday Slight Chance Snow Showers then Mostly Sunny 38/16 SW 8 kt 22 kt 17%
Thursday Mostly Sunny then Slight Chance Snow Showers 44/19 SSW 7 kt – 41%
Friday Snow Showers Likely 43/19 S 4 kt – 70%
Saturday Chance Snow Showers 44/18 WNW 3 kt – 47%
Sunday Chance Snow Showers 45 W 3 kt – 52%

Source: National Weather Service (office RIW). Forecast issued 0608Z.

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 US-3746. Enter a runway number or heading to estimate wind components.
FIELD CONDITIONS

Field elevation

Field elevation
7,848 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0021Z 6:21 PM
Sunrise
1351Z 7:51 AM
Loggable night
0051Z (6:51 PM local) → 1321Z (7:21 AM local)
end of evening to start of morning civil twilight
Position lights required
0021Z (6:21 PM local) → 1351Z (7:51 AM local)
sunset to sunrise (91.209)
Night passenger currency
0121Z (7:21 PM local) → 1251Z (6:51 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

Grant Village Helipad is in Mammoth, Wyoming. Field elevation 7,848 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeHeliport
CHARTS & AIRSPACE
ICAO / IATAUS-3746
RegionWyoming
CountryUnited States
Coordinates44.3847, -110.5506
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

US-3746 has no on-field report. Nearest reporting station: KWYS (30 NM NW, VFR).

KWYS Yellowstone Airport
30 NM NW
VFR
KJAC Jackson Hole Airport
47 NM S
VFR
KRXE Rexburg Madison County Airport
63 NM SW
VFR
KCOD Yellowstone Regional Airport
66 NM E
VFR
KLVM Mission Field
79 NM N
VFR
KPOY Powell Municipal Airport
80 NM E
VFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗US-3746 on OurAirports
FREQUENTLY ASKED
Does US-3746 have a METAR?
No on-field METAR is issued for US-3746. This page uses the nearest reporting station as a reference.
Does US-3746 have a TAF?
No TAF is issued directly for US-3746. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at US-3746?
US-3746 sits at 7,848 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for US-3746?
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.