Portsmouth Flood alert 3:10pm, Thursday 6th November 2025

Flooding possible. Be prepared.

Flood alert

High tides on Friday may lead to flooding.
Flooding is possible for 1 hour either side of Friday afternoon's tide at 12:00 on 07/11/2025.
The weather increases tide table values by 0.22 m. Total forecast tide is 5.33 metres Chart Datum (2.60 mAOD) at Portsmouth. Light Southerly Force 4 wind. In Old Portsmouth, the tide may just exceed the top of the main slipway which will cause minor road flooding in East Street and to the boat yards at The Camber. To protect property in Old Portsmouth, tidal defence gates will be closed. Saturday's tide at 00:15 on 08/11/2025 is forecast to be 19 cm lower (2.41 mAOD).
We are liaising with emergency services and local authorities .
Don't put yourself or others at risk .
This message will be updated by 3:00PM on 07 November 2025 or as the situation changes.

Information supplied by the Environment Agency

This information last updated 3:10pm, Thursday 6th November 2025.

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Flood Warning Area Details

Coastal area around Portsmouth

Region: Solent and South Downs

Country: England

Counties covered: Portsmouth

Watercourses covered: The Solent, Portsmouth Harbour, Langstone Harbour

Area covered by this alert location

The area bounded in blue on the map shows the area covered by flood alerts and warnings for Portsmouth.

Note: the area shown on the map is the area covered by flood alerts and warnings. It is not a live map of current flooding. The area covered broadly equates to the area where the risk of flooding in any year is greater than 1% (the "hundred year" flood risk).