River Derwent - Alum Cliffs UV IndexAustraliaTASHobartRiver Derwent - Alum Cliffs1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAARiver Derwent - Alum Cliffs UV forecast issued yesterday at 11:07 pm. Next forecast at approx. 11:07 pm.Get WillyWeather+ to remove ads