Military Airport
RestrictedThis is a military aerodrome. Civil aircraft access may be restricted or require prior authorization. Consult the applicable AIP for current access procedures.
Current Weather
Raw METAR
Clouds - Visual Profile
Weather Briefing
VFRAlpnach Air Base is currently reporting visual flight rules (VFR) conditions with overcast skies at 6,600 feet.
Wind Analysis
Winds are calm, presenting no crosswind concerns for any runway.
Visibility & Ceiling
The ceiling is 6600 feet AGL (overcast), well above standard VFR minimums.
Temperature & Moisture
Temperature is 6°C (43°F) with a dewpoint of 4°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.
Forecast Outlook
The TAF forecast covers the next 30 hours. The forecast shows a transition between VFR and IFR conditions. Pilots should monitor the forecast closely and have an alternate airport plan. Expected weather includes: Showers Rain, Thunderstorm Rain. There is a 40% probability of MVFR conditions with Showers Rain between 17:00Z and 20:00Z. There is a 40% probability of MVFR conditions with Showers Rain between 08:00Z and 18:00Z. There is a 30% probability of IFR conditions with Thunderstorm Rain between 13:00Z and 16:00Z.
Pilot Recommendations
Conditions are favorable for visual flight. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.
This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.
Forecast (TAF)
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Airport Runway Layout
Runway Information
| Runway | Length | Width | Surface | Heading | Wind Component |
|---|---|---|---|---|---|
| 01/19 | 6,135 ft | 131 ft | ASP | 11° | No wind data |
Weather Statistics - LSMA
10,775 observations | Sep 2025 - May 2026Flight Rules Distribution
Alpnach Air Base typically experiences VFR conditions 77.1% of the time, though instrument-rated pilots will find IFR weather present approximately 8.7% of observations. Prevailing winds are from the S averaging 5.1 knots. Calm conditions occur 19.9% of the time. Temperature extremes range from -13°C to 27°C, reflecting significant seasonal variation. Fog is a notable factor, occurring in approximately 20.8% of observations, with visibility below 3 SM in 0% of reports. The best months for VFR flying are May, April, March.
Wind Analysis
Temperature Range
Visibility
Best Months for VFR
Runway Wind Analysis
Statistics computed from 10,775 METAR observations (Sep 2025 - May 2026). Data sourced from official aviation weather services. Updated daily.
Alpnach Air Base - Airport Information
Airport Details
Location
Runway Information
Flight Planning Tools
Nearby Airports
About Alpnach Air Base
Alpnach Air Base is a military facility. Civilian access may be restricted or require Prior Permission (PPR). Pilots should consult the CH AIP for current access procedures and restrictions.
Overview
Alpnach Air Base (LSMA) is a medium-sized airport located in central Switzerland at an elevation of 1,460 feet MSL. Situated near the coordinates 46.943901, 8.284170, the airport serves an important regional role with its single runway 01/19, which spans 6,135 feet and is constructed of asphalt.
Flying Conditions
Weather conditions at Alpnach demonstrate significant variability, with Visual Flight Rules (VFR) prevailing 69.7% of the time. The airport experiences moderate temperature ranges from -13°C to 27°C, with an average temperature of 5.6°C. Notably, fog occurs in 29.6% of observations, and September through November offer the most consistently favorable VFR conditions.
Notable Features
The airport's wind patterns are characterized by a southerly prevailing wind at 180 degrees, with an average speed of 4.6 knots and maximum gusts up to 23 knots. Calm wind conditions are present 22.7% of the time, which provides relatively stable approach conditions for pilots navigating the region's terrain.
Approach Considerations
Runway 01/19 demonstrates highly favorable wind alignment, with 100% wind compatibility and an average crosswind of just 2.2 knots. Visibility averages 10 statute miles, with extremely rare instances of visibility below 3 miles, suggesting generally clear approach conditions for most operations.
Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.
Learn More
Recommended guides based on current conditions at LSMA
Official Data Sources
Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.