The A350 is closed in both directions due to a serious accident between the A303 and the B3089.
Congestion is back to the B3095.
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The evening will stay cloudy with drizzle and fog in hilly areas.
There will be early evening sunshine with a few patches of rain later on.
The Avon fire service has moved its headquarters from Bristol to share Avon and Somerset Police's Portishead base.