WxDecoder

US-0819 Weather High Alpine Heliport

Big Sky, MontanaElevation 7,580 ftHeliport
OFF-FIELD REFERENCE
Nearest report: KWYS · 34 NM S · 19 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
ACTIVE NWS ALERTS

Active weather alerts

Dense Fog AdvisoryModerate · Expected · Likely
25 1905Z to 26 1800Z
Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft; Gallatin and Madison County Mountains and Centennial Mountains
* WHAT...Variable visibility down to a quarter mile or less in dense fog. * WHERE...Canyon Ferry Area, Elkhorn and Boulder Mountains, Beaverhead and Western Madison below 6000ft, Gallatin Valley, Gallatin and Madison County Mountains and Centennial Mountains, Madison River Valley, Missouri Headwaters, and Northwest Beaverhead County. * WHEN...Until noon MDT Monday. * IMPACTS...Low visibility co…
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

Alerts from the National Weather Service. For situational awareness only; always confirm against an official briefing.

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 4.44C. This observation is older than usual, so treat it with extra caution. Treat this as supplemental, not an aviation observation. Forecast suggests tonight partly cloudy then patchy fog, low near 25F, 0% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Tonight Partly Cloudy then Patchy Fog 25 ESE 3 kt – 0%
Monday Areas Of Fog then Partly Sunny 50/27 ESE 6 kt 18 kt 96%
Tuesday Light Snow Likely 38/21 SW 9 kt 24 kt 60%
Wednesday Mostly Sunny 41/23 SSW 7 kt 21 kt 4%
Thursday Mostly Sunny 45/26 S 7 kt 22 kt 27%
Friday Chance Light Snow 45/25 S 4 kt – 49%
Saturday Chance Light Snow 45/25 S 3 kt – 34%
Sunday Chance Light Snow 47 SSE 3 kt – 46%

Source: National Weather Service (office TFX). Forecast issued 0354Z.

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-0819. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway

H1
Dimensions
40 x 40 ft
Surface
Concrete (fair)
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
7,580 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0023Z 6:23 PM
Sunrise
1355Z 7:55 AM
Loggable night
0054Z (6:54 PM local) → 1325Z (7:25 AM local)
end of evening to start of morning civil twilight
Position lights required
0023Z (6:23 PM local) → 1355Z (7:55 AM local)
sunset to sunrise (91.209)
Night passenger currency
0123Z (7:23 PM local) → 1255Z (6:55 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

High Alpine Heliport is in Big Sky, Montana. Field elevation 7,580 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeHeliport
ManagerRICHARD BARNHART
Manager phone215-749-0044
CHARTS & AIRSPACE
ICAO / IATAUS-0819
SectionalGREAT FALLS
Center (ARTCC)SALT LAKE CITY
Flight service (AFSS)GREAT FALLS
RegionMontana
CountryUnited States
Coordinates45.2289, -111.3757
Distance from city3 NM SW
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-0819 has no on-field report. Nearest reporting station: KWYS (34 NM S, VFR).

KWYS Yellowstone Airport
34 NM S
VFR
KBZN Bozeman Yellowstone International Airport
34 NM N
LIFR
KLVM Mission Field
48 NM NE
VFR
KDLN Dillon Airport
50 NM W
IFR
KBTM Bert Mooney Airport
64 NM NW
VFR
KRXE Rexburg Madison County Airport
86 NM S
VFR
AIRPORT REMARKS

Operational remarks

›SEE AIRSPACE CASE NO. 2017-ANM-1751-NRA
›FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗US-0819 on OurAirports
FREQUENTLY ASKED
Does US-0819 have a METAR?
No on-field METAR is issued for US-0819. This page uses the nearest reporting station as a reference.
Does US-0819 have a TAF?
No TAF is issued directly for US-0819. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at US-0819?
US-0819 sits at 7,580 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for US-0819?
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.