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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Wednesday evening's Pollen Forecast
Wednesday evening's weather for the west of the region
Wednesday evening's weather for the east of the region