Heavy rainfall has been lashing much of the Westcountry with flooding forcing the closure of many roads and rising water pouring into properties.
Fears of a major flooding incident have been growing after reports of floods became so widespread across Cornwall that the local authority opened its dedicated control centre to respond to the calls.
A Cornwall Council spokesman said: "The council has opened Silver Control to co-ordinate the multi-agency response to flooding."
Rising water has started to flood many properties with homes and businesses in Newlyn among worst-hit places battling to keep the floods at bay.
The council spokesman said there were reports of flooding across the west of the county, including around Penzance and Mevagissey in Mid Cornwall – a community still recovering from the impact of last year's torrential downpours.
The council said there has been reports of flooding on the A30 at Scorrier, Chiverton and the Avers roundabout; on the road between St Ives and Trink Hill, at Tregony and the Britannia Inn at Par, Gweek to Constantine, deep ponding on the road between St Day and Lanner, and the road between Camborne and Praze, among other areas.
The rainfall began to get heavier as the night drew on, with more reports of flooding coming later in the evening.
Police have been warning motorists in some of the worst-hit areas against driving as officers deal with a surge in call-outs.
Sgt Dave Opara, based in Plymouth, said: "I would advise motorists not to make journeys that aren't absolutely necessary. There has been a considerable amount of rainfall across the force area. There will be more to come throughout the night, so the situation is not going to get much better too soon."
He said the force had received "a significant increase" in weather-related calls last night, prompting fears of further floods overnight.
Charlie Powell, a spokesman for the Exeter-based Met Office, had earlier warned of a "seriously large amount of rain" in parts. Persistent rain is also expected throughout the day on Friday in Devon and Cornwall.