PORTLAND can expect more wild weather overnight with 11-metre high waves predicted.
The State Emergency Service set up an incident control centre at 4pm and volunteers door-knocked about 140 houses warning of the forecasted weather which is to arrive about 10pm.
SES controller John Davis said if waves reached 11 metres at sea, they would hit the city's rock wall at five to six metres high, inundating Dutton Way and Fergusons Road.
"While the wind is heading in a north-west direction we should be alright," Mr Davis said.
He said the SES was called to seven incidents in Portland with strong winds brining trees down at two houses.
Bureau of Meteorology senior forecaster Richard Carlyon said winds had reached 100km/h this afternoon in Portland.
He said 18mm of rain had fallen by 4pm today and 10mm to 20mm was expected tomorrow.
"It just keeps showering, it's not particularly heavy," he said.
Fallen trees caused havoc throughout the south-west with a car crashing into a tree on the Timboon-Colac Road at Scotts Creek.
Trees were also reported down at Timboon, Glenfyne, Port Fairy and Hexham.
Six roads in Portland remain closed including Bridgewater Road, Malings Road, Kerrs Road, McIntyre Road, Nagorckas Road and Thorns Road after flooding last week.
Fish Hole Road in Gorae West, Boiler Swamp Road at Druborg and Moreys Road in Naringal East are also closed.
Sergeant Sean Elliott, from Portland police, said the worst affected was Bridgewater Road with three metres of the road destroyed.
East-bound traffic is being diverted via Bridgewater Lakes Road, and west-bound traffic via Oakleys Road. He said the road would be closed for somet ime and McIntyre Road and Kerrs Road had also suffered significant damage