The Council has received a flood alert from the Environment Agency for Tuesday 27 October 2026 which reads as follows:
Flooding is possible over the high tide on Tuesday morning. High water at St Marys is at 04:52.
Westerly winds and large waves are forecast to cause flooding to low lying land and roads between approximately 04:00 and 06:00.
Locations particularly at risk include the Old Town and Porthcressa areas of St. Mary’s and St. Martin’s quay. Spray and wave overtopping of quaysides and harbours is likely in exposed coastal locations. Do not walk or drive through flood water or waves.
Coastal conditions should ease for Tuesday evening’s high tide.
Detailed tidal information; The forecast high tide level at St Marys is 3.11mAOD or 6.02mCD. This is 0.20m above tide table level due to storm surge. Force 6 westerly winds and offshore wave heights of over 5m are forecast over the high tide.
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Please take care if walking or driving near the affected areas at the times mentioned in the message above.