A Flood Alert was issued for The Essex coast from Clacton to and including, St Peters Flat and the Colne and Blackwater estuaries in Essex on 9th October 2026. Affected watercourses included the North Sea.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Blackwater at Stisted rose 0.14m, peaking at 0.43m, while the River Brain at Guithavon Valley climbed 0.06m.
Environment Agency advice issued
High tides overnight may lead to flooding. Flooding is possible on consecutive tides from 11pm on Friday 9th October through to 1am on Saturday 10th October. Clacton Promenade, Lee-over-Sands and Brightlingsea sea front may see some wave overtopping and spray. The Strood at Mersea Island, Coast Road and car parks on the front at West Mersea, and the Hythe and Promenade at Maldon may be flooded. The detailed forecast is for a peak level at Clacton of 2.90 mAODN at 12am, on Saturday 10th October, which is 0.48m above tide tables, Wind Force 6, Westerly. Tides will remain high over the next cou
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Stisted | River Blackwater | +0.14m | 0.43m |
| Guithavon Valley | River Brain | +0.06m | 0.21m |