Portsmouth

Message issued at 4:34pm, Sunday 5th January 2025

This is an archived message. The status has changed more recently.

Flooding possible. Be prepared.

Flood alert

Monday's early morning tide at 03:30 on 06/01/2025 is higher than normal due to unsettled weather with strong Southerly Force 7 winds and large waves. The weather increases tide table values by 0.68 m. The total forecast tide is 5.25 metres Chart Datum (2.52 mAOD) at Portsmouth. For 1 hour either side of high water, in Old Portsmouth, the tide may just exceed the top of the main slipway which will cause minor road flooding in East Street. It could also cause minor disruption to the boat yards at The Camber. Spray overtopping of defence walls at Southsea promenade, and Eastern road is also expected. To protect property in Old Portsmouth, tidal defence gates will be closed. Monday afternoon's tide at 15:45 06/01/2025 is forecast to be 62 cm lower (1.9 mAOD). No further flood impacts are expected. We are liaising with the local authority over flood defence gate closures. Avoid walking along the exposed sea front, especially Southsea, at high tide. Spray and large waves can carry and throw shingle and debris. We will remove this message by 12:00 on 06/01/2025.

Information supplied by the Environment Agency

This information last updated 4:34pm, Sunday 5th January 2025.

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Most recent flood warnings and alerts for Portsmouth

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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).