The Met Office has upgraded its wind warning to amber as Storm Henk hits Wales, with power cuts and building damage possible until 20:00 GMT on Tuesday. Flood warnings have also been issued by Natural Resources Wales, with a yellow weather warning for heavy rain in place until 21:00. The named storm is the eighth of the season and is expected to affect south Wales the most, with warnings also in place for other parts of the country. The wettest areas could see up to 50mm of rain, while coastal areas could see wind speeds of up to 80 mph. Forecasters have warned of closed roads and bridges, cancelled or delayed trains and buses, and longer travel times. National Rail reported flooding affecting services between Swansea and Carmarthen, and to and from Pembroke Dock. Train services between London Paddington and south Wales were being diverted because of flooding between Swindon and Bristol Parkway. The Met Office said flooding of homes and businesses was possible, as well as power cuts and travel disruption. It urged people to check for loose items outside homes and to only travel if necessary.