Brown Cabin Seaplane Base (6MT4) Area Aviation Weather & Runway Winds
As of 11:15 AM MDT, Oct 28, based on the nearest station (KS34), 6MT4 is currently VFR with winds from 150° at 8 knots, visibility 10+ statute miles, and a 5,000 ft ceiling.
Aviation weather near Brown Cabin Seaplane Base in Libby, MT, decoded from the nearest reporting station (KS34): conditions and runway crosswinds.
Brown Cabin Seaplane Base (6MT4) is a seaplane base in Libby, MT. 6MT4 has no weather station of its own. Conditions here are decoded from KS34, about 35 nm away, the nearest reporting station, and local conditions can differ. It has 2 physical runways (11W, 29W), the longest 12,000 ft. The nearest TAF is issued for KGPI.
No weather station at this airport: showing the nearest station KS34, 34.7 nm away.
Wind from the south-southeast (150°) at 8 kt, visibility 10+ statute miles, broken clouds at 5,000 ft, temperature 8°C (46°F), altimeter 29.98 inHg. Conditions are Visual Flight Rules (VFR), ceiling 5,000 ft.
METAR KS34 281715Z AUTO 15008KT 10SM BKN050 08/07 A2998 RMK AO2
What changed at KS34 (nearest station)?
Since the 1655Z (10:55 AM MDT) report, compared automatically against the latest METAR.
No significant changes since the 1655Z (10:55 AM MDT) report, conditions are holding steady.
Current pilot readout for 6MT4
Based on the nearest station (KS34), 6MT4 is currently VFR with winds from 150° at 8 knots, visibility 10+ statute miles, and a 5,000 ft ceiling. Density altitude is approximately 3,250 ft (field elevation 3,340 ft). 6MT4 does not publish a TAF. The nearest TAF station is KGPI, about 37 nm away.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
Runway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| 11WFAV | 12,000 ft | Water | 7 kt head | 4 kt right |
| 29W | 12,000 ft | Water | 7 kt tail | 4 kt left |
Open the crosswind calculator to try your own wind and runway numbers →
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 24 h: wind 4→8 kt, ceiling 4,200 ft → 5,000 ft.
6MT4 weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap
NOAA NEXRAD composite and lightning, updated about every five minutes; amber frames are HRRR model guidance, not observed radar. Not for navigation.
Pilot reports (PIREPs) within 100 NM of 6MT4
Reported by pilots in flight over the past 6 hours, via aviationweather.gov.
Show raw report
SFF UA /OV ILS RWY 22R/TM 1642/FL049/TP PC12/SK OVC049-TOP180-220/TA M03 049-080/IC LGT CLR 049-080/LGT RIME 080-190
SFF UAHeader: reporting station and UA: a routine pilot report.OV ILS RWY 22RLocation: fix or navaid, optionally with a radial and distance in NM.TM 1642Reported at 16:42 UTC.FL049Altitude: 4,900 ft MSL.TP PC12Aircraft type reporting.SK OVC049-TOP180-220Sky condition: cloud bases and tops in hundreds of feet MSL.TA M03 049-080Outside air temperature, °C.IC LGT CLR 049-080/LGT RIME …Icing: light clear 4,900–8,000 ft/lgt rime 8,000–19,000 ft.Show raw report
SFF UA /OV ILS RWY 22R/TM 1628/FL049/TP SR22/SK OVC049-TOPUNKN/TA M03/IC LGT CLR
SFF UAHeader: reporting station and UA: a routine pilot report.OV ILS RWY 22RLocation: fix or navaid, optionally with a radial and distance in NM.TM 1628Reported at 16:28 UTC.FL049Altitude: 4,900 ft MSL.TP SR22Aircraft type reporting.SK OVC049-TOPUNKNSky condition: cloud bases and tops in hundreds of feet MSL.TA M03Outside air temperature, °C.IC LGT CLRIcing: light clear.Show raw report
GEG UA /OV GEG110015/TM 1600/FL120/TP PC12/SK 054OVC TOPS 120
GEG UAHeader: reporting station and UA: a routine pilot report.OV GEG110015Location: fix or navaid, optionally with a radial and distance in NM.TM 1600Reported at 16:00 UTC.FL120Altitude: 12,000 ft MSL.TP PC12Aircraft type reporting.SK 054OVC TOPS 120Sky condition: cloud bases and tops in hundreds of feet MSL.Show raw report
MSO UA /OV MSO/TM 1538/FL100/TP BE9L/SK OVC100/TB NEG/RM DURD RNAV RY 30
MSO UAHeader: reporting station and UA: a routine pilot report.OV MSOLocation: fix or navaid, optionally with a radial and distance in NM.TM 1538Reported at 15:38 UTC.FL100Altitude: 10,000 ft MSL.TP BE9LAircraft type reporting.SK OVC100Sky condition: cloud bases and tops in hundreds of feet MSL.TB NEGTurbulence: none reported.RM DURD RNAV RY 30Remarks.Show raw report
SFF UA /OV 10 SE SFF/TM 1513/FL080/TP PC12/TA M06/TB LGT 180-080/IC LGT CLR 180-080
SFF UAHeader: reporting station and UA: a routine pilot report.OV 10 SE SFFLocation: fix or navaid, optionally with a radial and distance in NM.TM 1513Reported at 15:13 UTC.FL080Altitude: 8,000 ft MSL.TP PC12Aircraft type reporting.TA M06Outside air temperature, °C.TB LGT 180-080Turbulence: light 18,000–8,000 ft.IC LGT CLR 180-080Icing: light clear 18,000–8,000 ft.Show raw report
SFF UA /OV ILS RWY 22R/TM 1434/FL045/TP PC12/SK BKN045-TOP060/TA 00/IC TRACE RIME
SFF UAHeader: reporting station and UA: a routine pilot report.OV ILS RWY 22RLocation: fix or navaid, optionally with a radial and distance in NM.TM 1434Reported at 14:34 UTC.FL045Altitude: 4,500 ft MSL.TP PC12Aircraft type reporting.SK BKN045-TOP060Sky condition: cloud bases and tops in hundreds of feet MSL.TA 00Outside air temperature, °C.IC TRACE RIMEIcing: trace rime.Show raw report
MSO UA /OV MS0/TM 1432/FL065/TP AT43/SK OVC065-TOP105/IC TRACE RIME/RM DURD ILS RY 12
MSO UAHeader: reporting station and UA: a routine pilot report.OV MS0Location: fix or navaid, optionally with a radial and distance in NM.TM 1432Reported at 14:32 UTC.FL065Altitude: 6,500 ft MSL.TP AT43Aircraft type reporting.SK OVC065-TOP105Sky condition: cloud bases and tops in hundreds of feet MSL.IC TRACE RIMEIcing: trace rime.RM DURD ILS RY 12Remarks.Show raw report
MSO UA /OV MSO300022/TM 1348/FL090/TP B190/TA M08/IC MOD RIME
MSO UAHeader: reporting station and UA: a routine pilot report.OV MSO300022Location: fix or navaid, optionally with a radial and distance in NM.TM 1348Reported at 13:48 UTC.FL090Altitude: 9,000 ft MSL.TP B190Aircraft type reporting.TA M08Outside air temperature, °C.IC MOD RIMEIcing: moderate rime.⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.
Recent aviation weather trends at 6MT4
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station KS34 reported mostly VFR across 72 observations, with 8 flight-category changes. The strongest gust reached 17 kt, the lowest ceiling was 2,900 ft. Wind most often came from the SW.
Most recent change: MVFR → VFR
Most recent change: MVFR → VFR
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- 11W
- 58%
- 29W
- 42%
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Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit
Airport info
From the FAA airport record (cycle 2026-10-01) and OurAirports.
Services
- Control tower
- None
Airport
- Type
- Seaplane base
- FAA LID
- 6MT4
- City
- Libby
- State
- Montana
- Country
- United States
- Elevation
- 3,340 ft
- Coordinates
- 48.0381, -115.0913
- Runways
- 2 physical runways · 2 runway ends
- Longest runway
- 12,000 ft
- Weather reporting
- Nearest station KS34
- TAF
- Nearest KGPI
- Time zone
- America/Denver
- Sunset in
- 7h 6m
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Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
4 airports25–50 NM
8 airports+2 more within 50 NM
50–100 NM
8 airports+2 more within 100 NM
RC flying fields nearby
AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.
- Kootenai RC Flyers - Champion Haul Rd , Libby, MT · 28 mi
Pilot PIREPs for Brown Cabin Seaplane Base (6MT4)
Community-submittedCommunity-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.
Read recent community-submitted pilot notes for Brown Cabin Seaplane Base, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.
⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.
No Pilot PIREPs have been submitted for 6MT4 yet. Recently flew here? Help the next pilot by leaving a quick airport note.
Pilot PIREPs are community pilot notes for situational awareness only, not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
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