Gwyn Jones, from North Wales Fire and Rescue Service, says that civil engineers inspecting the dam believe that a severe breach is "not imminent." However, evacuation is being undertaken to ensure public safety.
More top news
From the HTV Cymru archives here's the 1969 hit by legendary singing duo Toni ac Aloma singing about a village cafe on Anglesey.
The whale was rescued last week and helped back into the sea. Environmentalists "sad" to find it had subsequently died.
Another largely cloudy and murky day with a chance of a few brighter spells in the west.