A severe flood Warning will remain in force for two hours following the time of high tide at Preston Beach in Weymouth.
Flooding may already be affecting properties, low lying areas and roads.
There may be significant spray and shingle overtopping affecting the coast road which will be very dangerous to life, property and traffic.
More top news
James Wright has the latest weather forecast for the west of the ITV Meridian region
James Wright has the latest weather forecast for the east of the ITV Meridian region
Ukip leader fails to see the humour in a phone app created by teenagers which pokes fun at him and his party's views on immigrants.