Cathlamet Bay - Svensen Slough Entrance UV IndexUnited StatesORClatsop CountyCathlamet Bay - Svensen Slough Entrance1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAACathlamet Bay - Svensen Slough Entrance UV forecast issued yesterday at 11:17 am. Next forecast at approx. 11:17 am.Get WillyWeather+ to remove ads