Small General Aviation Airport • Semnan, 20, IR
Elevation: 3,665 ft (1117 m) • 35.5911, 53.4951
Semnan Municipal Airport (OIIS / SNX) is a small general aviation airport serving Semnan, 20, IR, situated at an elevation of 3,665 ft (1117 m) above sea level. Local magnetic variation is 4.8° East.
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