{"icao":"EFSA","name":"Savonlinna Airport","lat":61.9431,"lon":28.9451,"country":"FI","tz":"Europe/Helsinki","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":137,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["September","December"],"monthlyHours":[13,8,9,6,3,4,6,10,24,16,19,21],"medianEventHours":1,"season":{"summary":"Fog season runs July through April, peaking in September; fog is mostly a midnight\u20138 AM phenomenon; typically thinning out by noon; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","April","July","August","September","October","November","December"],"timeOfDay":"midnight\u20138 AM","typicallyClearsBy":"noon"}},"forecast":{"covered":false,"public":false,"wording":"No fog forecast feed exists for this station. September typically brings about 24 hours of dense fog here (10-year average)."},"links":{"page":"https://fogatlas.org/fog/efsa/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=EFSA","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/EFSA.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}