Strong winds have forced the M48 Severn Bridge crossing to close.
The bridge is closed eastbound between junction 2 (Newhouse) and junction 1 (Aust).
There are also restrictions on the westbound carriageway which is closed to high-sided vehicles (height limit of 6ft 9 inches), caravans, motorcyclists and other vulnerable road users.
Storm Callum has caused winds of up to 76mph.
Western Power Distribution said more than 950 homes had been left without electricity in south-west England.
A number of wind and rain warnings have been issued by the Met Office.
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