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.
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Thursday afternoon's weather for the west of the region
Thursday afternoon's weather for the east of the region
Hundreds of university lecturers are striking in a row about their pensions. Demonstrations are taking place at campuses across the region.