What the app shows you
Full FogCast score, fog type, chase-or-skip verdict, and 10-day outlook — all in the app.
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Know before you drive: FogCast checks the conditions that produce photogenic fog
Get more than a snapshot of current conditions. The LightCast app unlocks everything to plan ahead
Humidity alone isn't enough. Wind alone isn't enough. Cloud cover alone isn't enough. Photogenic valley fog requires several conditions to line up at once, and most weather apps don't read them together.
Set a FogCast threshold once. The app will alert you when conditions at your saved locations look promising, so you're not manually checking at 4am.
Don't waste a sunrise drive. Check FogCast before you leave.
Download on the App StoreSilver Falls State Park in the Oregon Coast Range contains ten waterfalls along the Trail of Ten Falls, the most famous of which — South Falls at 55 meters — drops behind a walkable cave that lets hikers stand behind the cascade. The park sits in a forested canyon environment where autumn and winter morning fog is common, and the combination of dense Douglas fir forest, the canyon microclimate, and multiple waterfalls gives fog photographers an almost unlimited range of compositions within a single hike.
South Falls and North Falls are the two most photogenic fog subjects — the cave-behind-the-falls viewpoints are especially atmospheric when morning mist filters the light and softens the canyon walls. The canyon trail between falls passes through old-growth forest where ground fog pools between the fern-covered slopes in a way that is unlike anywhere else in Oregon. October through January is the best fog season, when overnight temperatures cool the canyon floor after rain-saturated days and ground fog forms by dawn. The north-facing canyon walls hold fog significantly longer than the south-facing slopes.
Silver Falls fog forms by radiation cooling in the canyon bottom after clear nights. The park's elevation of about 400 meters and forested canyon walls trap cold, humid air on still nights. After 24 to 48 hours of high pressure following a wet period, the saturated soil and canopy moisture create a humid base that converts quickly to fog when temperatures drop overnight. Aim for mornings after clear nights following rain — the canyon will be fogged from the floor up to about 50 meters.