A Flood Alert was issued for Tidal areas of Shoreham Harbour in Brighton and Hove, West Sussex on 27th September 2026. Affected watercourses included the English Channel.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Arun at Littlehampton rose 4.58m, peaking at 3.01m, while the River Adur at Beeding Bridge climbed 1.78m.
Environment Agency advice issued
High tides on Monday may lead to flooding. Flooding is possible for 1 hour either side of Monday afternoon's tide at 13:00 on 28/09/2026.. The weather increases tide table values by 0.5 m. Total forecast tide is 6.90 metres Chart Datum (3.63 mAOD) at Shoreham. Light North Easterly Force 3 wind. The tide will come close to the top of walls and slipways in Shoreham Town. Minor impact flooding will affect Sussex Yacht Club. Riverbank houseboats will be raised higher than normal, making access to them temporarily more difficult. Tuesday's tide at 01:15 29/09/2026 is forecast to be 16 cm lower (3
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Littlehampton | River Arun | +4.58m | 3.01m |
| Beeding Bridge | River Adur | +1.78m | 2.54m |
| Barcombe | River Ouse | +0.51m | 3.03m |
| Ferring Outfall | River Arun | +0.08m | -3.37m |