{"icao":"KRDR","name":"Grand Forks Air Force Base","lat":47.9611,"lon":-97.4012,"country":"US","tz":"America/Chicago","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":49,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","February"],"monthlyHours":[4,5,5,5,2,1,1,5,2,4,3,11],"medianEventHours":1,"season":{"summary":"Fog season is January, February, March, April, August, October, November, December, peaking in December; fog is mostly a 4 AM\u201311 AM phenomenon; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","April","August","October","November","December"],"timeOfDay":"4 AM\u201311 AM","typicallyClearsBy":null}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":30,"peakAtLocal":"2026-09-04T09:00:00-05:00","wording":"Some chance of fog: the calibrated forecast peaks at 30% (visibility under 1 mile) around 9 am Friday."},"links":{"page":"https://fogatlas.org/fog/krdr/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KRDR","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KRDR.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}