{"icao":"KNRB","name":"Naval Station Mayport / Admiral David L McDonald Field","lat":30.3911,"lon":-81.4247,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":34,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","February"],"monthlyHours":[6,6,5,1,0,1,1,0,0,1,3,11],"medianEventHours":1,"season":{"summary":"Fog season runs November through March, peaking in December; fog is mostly a 5 AM\u20138 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","November","December"],"timeOfDay":"5 AM\u20138 AM","typicallyClearsBy":"10 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":1,"peakAtLocal":"2026-09-04T16:00:00-04:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 1%. dense fog (visibility under a mile) is rare here in September."},"links":{"page":"https://fogatlas.org/fog/knrb/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KNRB","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KNRB.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}