# Flood alert: The Essex coast from Clacton to and including, St Peters Flat and the Colne and Blackwater estuaries

**Event type:** Flood warning  
**Status in source feed:** current  
**Area:** The Essex coast from Clacton to and including, St Peters Flat and the Colne and Blackwater estuaries  
**County:** Essex  
**River or sea:** North Sea  
**Warning raised:** 2026-11-12T15:49:33Z  
**Source update:** 2026-11-12T15:49:00Z  
**Dataset checked:** 2026-11-12T22:00:44Z  
**Official warning-area boundary:** 86.685 km²

## What this measures

The mapped outline is the Environment Agency's official flood-warning area. Its approximate area uses a spherical calculation and is not an estimate of flooded land, people affected, casualties, displacement or damage. The first release uses warning data only; it does not map observed inundation.

## Source message

> High tides this evening may lead to flooding.
> Flooding is possible from 00:45am to 2:45am on Friday 13 November.
> 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 2.71mAODN at 1:45am on Friday 13 November, which is 0.61m above tide tables, Wind Force 5, north westerly. No further high tides are expected over the coming days.
> We are closely monitoring the situation .
> Take care and avoid walking, cycling or driving through flood water.
> This message will be updated by 10:00AM on Friday 13 November or as the situation changes.

## Source and reuse

This uses Environment Agency flood and river level data from the real-time data API (Beta). Data are provided under the [Open Government Licence v3.0](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/). [Open the source record](https://environment.data.gov.uk/flood-monitoring/id/floods/051WACDV4C). Boundaries are from [the Environment Agency API](https://environment.data.gov.uk/flood-monitoring/doc/reference).

Prepared by TechnicalGIS Environmental News Desk. Dataset revision 1.