Three lanes are closed on the M5 southbound between Junction 20 B3133 (Clevedon) and Junction 21 A370 / B3440 (Weston-Super-Mare) due to an overturned vehicle.
At least four fire engines and the police helicopter are attending.
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A mix of some showery outbreaks of rain and brighter spells in the west feeling cooler than Wednesday.
Showery outbreaks of rain will become more widespread through today, with heavy and locally thundery downpours possible.
It will be a bright and warm evening but clouds will arrive as midnight approaches.