Yellowstone Seaplane Base
8M3 · West Yellowstone, MT · Non-towered · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-21 · night begins 07:54 PM
| Event | Local (MDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:42 AM | 12:42Z |
| Sunrise | 07:11 AM | 13:11Z |
| Sunset | 07:25 PM | 01:25Z |
| Evening civil twilight Loggable night begins | 07:54 PM | 01:54Z |
Plan a flight from 8M3
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
Pilot reports · Loading PIREPs…
Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 13W/31W | 12,007 ft |
Prefer one flat page? Full runway details for 8M3 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 8M3 kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Prefer one flat list? All 8M3 frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- 8M3
- Coordinates
- 44.8300, -111.2875
- Elevation
- 6,534 ft MSL
- Sectional chart
- GREAT FALLS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- BOISE · 122.6 · 1-800-WX-BRIEF
- Segmented circle
- No
- Activated
- 2019/01
- Distance from city
- 13 NW
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 123.0 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Ownership & management 2 contacts
Remarks FAA · 1 notes
General
- NO DOCKING LCTN AVBL.
Nearby airports
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Also nearby: U53 Henrys Lake (12 NM) · 1MT0 Nine Quarter Circle Ranch (private) (14 NM) · MT94 Ousel Falls (private) (25 NM) · 29S Gardiner (27 NM) · MT68 Montfort Ranch (private) (28 NM)
About 8M3
Yellowstone (8M3) is a seaplane base in West Yellowstone, MT, at 6,534 ft MSL. It has 1 runway, the longest 12,007 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 8M3, refreshed from the Aviation Weather Center and FAA NASR.
Does 8M3 have a control tower?
No. Yellowstone is a non-towered (pilot-controlled) seaplane base; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 8M3?
Yellowstone has 1 runway; the longest is 12,007 ft. See the Runways section for headings, surface, and lighting.
Where is 8M3?
Yellowstone is in West Yellowstone, MT, at an elevation of 6,534 ft MSL. Coordinates: 44.8300, -111.2875.
More about 8M3
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 8M3 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
Something here wrong or out of date? Report a data problem.