Medium Regional Airport • La Grande-4, QC, Canada
Elevation: 1,005 ft (306 m) • 53.7547, -73.6753
La Grande-4 Airport (CYAH / YAH) is a medium regional airport serving La Grande-4, QC, Canada, situated at an elevation of 1,005 ft (306 m) above sea level. Local magnetic variation is 16.3° West. The airport has 2 runways, with the longest measuring 5,000 feet.
| Designator | Length | Width | Surface | Heading |
|---|---|---|---|---|
| 09 | 5,000 ft | 150 ft | GRAVEL | — |
| 27 | 5,000 ft | 150 ft | GRAVEL | — |
METAR (Meteorological Aerodrome Report) is the standard format for reporting current weather conditions at airports worldwide. Issued every 30–60 minutes, it includes wind direction and speed, visibility, sky condition and cloud heights, temperature, dewpoint, and altimeter setting. Special METARs (SPECI) are issued when conditions change significantly.
TAF (Terminal Aerodrome Forecast) provides a weather forecast for the area within 5 nautical miles of an airport, valid for 24–30 hours. Issued every 6 hours by national weather services, TAFs use FM (from), TEMPO (temporary), BECMG (becoming), and PROB (probability) groups to describe changing conditions.
Flight Categories: VFR ceiling >3,000 ft & vis >5 SM MVFR 1,000–3,000 ft or 3–5 SM IFR 500–1,000 ft or 1–3 SM LIFR <500 ft or <1 SM
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