A27 in both directions closed due to flooding between A259 Bognor Road (Bognor Bridge Roundabout, Chichester) and Meadow Way (Tangmere Roundabout).
Highways report the road is unlikely to be open before 1pm.
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Wednesday's weather for the east of the region
Wednesday's weather for the west of the region
Dorset's Weymouth Beach has been named the UK's best by travellers, with Fistral Bay, Cornwall, coming in second place.