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Langstone to Emsworth Harbour

Coastal area from Langstone to Emsworth Harbour

Flood alert area Langstone Harbour, Emsworth Harbour Hampshire, West Sussex Solent and South Downs

Flood Alert Active Warning

Raised: 25 Oct 2026 at 5:43pm • Updated: 25 Oct 2026 at 5:43pm
High tides on Monday may lead to flooding.
Flooding is possible for 1 hour either side of Monday morning's tide at 11:00 on 26/10/2026.
The weather increases tide table values by 0.44 m. Total forecast tide is 5.37 metres Chart Datum (2.64 mAOD) at Portsmouth. Strong Southerly Force 5 wind. Levels will be high at South Street and Queen Street Emsworth. The Ship Inn car park, Langstone will flood. Water will flow across the A259 junction with Lumley Road, flooding driveways. Water will flow into the road at Langstone High Street. Flood depths in the road will be up to 0.1m deep, and should only cause impacts nearest to the harbour front. Monday's tide at 23:18 26/10/2026 is forecast to be 29 cm lower (2.35 mAOD).
We are closely monitoring the situation .
Consider activating any flood protection products you may have.
This message will be updated by 6:00PM on Monday 26 October or as the situation changes.

Map

Nearby Monitoring Stations

Emsworth in this area
West Brook • Emsworth • 1.4 km
Rising · normal — Up 0.24 m since 09:15, still rising (0.21 m/h)
2.12 m
33min ago
West Street
River Lavant • Havant • 2.3 km
Steady · normal
7.07 m
33min ago
Crosslands Drive
River Lavant • Havant • 2.5 km
Rising · normal
0.17 m
33min ago
WESTBOURNE GS
• 2.9 km
Steady
0.02 m
48min ago
Westbourne
River Ems • Westbourne • 2.9 km
Steady · normal
0.07 m
48min ago
Havant
Hermitage Stream • Havant • 3.0 km
Rising · normal
5.11 m
33min ago
Bosham Moreton Road
Bosham Stream • Bosham • 7.0 km
Steady · normal
0.23 m
48min ago
Denmead
River Wallington • Denmead • 9.1 km
Rising · normal
33.36 m
33min ago
Portsmouth
Tide • Gosport • 12.0 km
tidal gauge
2.45 m
33min ago
Chichester Tozer Way
River Lavant • Chichester • 13.2 km
Easing · normal — Easing — down from 12.67 at 07:00, now 12.64
12.64 m
48min ago

Flood Event History (50)

25 Oct 2026 at 5:43pm Flood Alert
High tides on Monday may lead to flooding. Flooding is possible for 1 hour either side of Monday morning's tide at 11:00 on 26/10/2026. The weather increases tide table values by 0.44 m. Total forecast tide is 5.37 metres Chart Datum (2.64 mAOD) at Portsmouth. Strong Southerly Force 5 wind. Levels w...
25 Oct 2026 at 2:58pm Flood Alert
High tides on Sunday may lead to flooding.  Flooding is possible for 1 hour either side of Sunday evening's tide at 22:39 on 25/10/2026.  The weather increases tide table values by 0.47 m. Total forecast tide is 5.24 metres Chart Datum (2.51 mAOD) at Portsmouth. Light Westerly Force 4 wind. Levels w...
5 Feb 2026 at 4:59pm Flood Alert
3 Feb 2026 at 7:03am Flood Alert
8 Jan 2026 at 3:09pm Flood Alert
5 Dec 2025 at 2:55pm Flood Alert
6 Nov 2025 at 3:12pm Flood Alert
5 Nov 2025 at 6:08pm Flood Alert
5 Nov 2025 at 1:37pm Flood Alert
4 Nov 2025 at 12:13pm Flood Alert
9 Sep 2025 at 9:59pm Flood Alert
30 Mar 2025 at 3:03pm Flood Alert
5 Jan 2025 at 4:17pm Flood Alert
31 Dec 2024 at 6:02pm Flood Alert
18 Dec 2024 at 3:53pm Flood Alert
18 Nov 2024 at 4:02pm Flood Alert
17 Nov 2024 at 3:59pm Flood Alert
20 Oct 2024 at 9:07am Flood Alert
17 Oct 2024 at 9:38am Flood Alert
9 Apr 2024 at 3:48pm Flood Alert
9 Apr 2024 at 8:43am Flood Alert
8 Apr 2024 at 8:26am Flood Alert
7 Apr 2024 at 1:00pm Flood Alert
27 Mar 2024 at 8:47pm Flood Alert
11 Feb 2024 at 6:38pm Flood Alert
11 Feb 2024 at 3:33pm Flood Alert
10 Feb 2024 at 7:37pm Flood Alert
10 Feb 2024 at 2:10pm Flood Alert
9 Feb 2024 at 5:32pm Flood Alert
9 Feb 2024 at 1:42pm Flood Alert
8 Feb 2024 at 4:25pm Flood Alert
14 Jan 2024 at 4:30pm Flood Alert
13 Nov 2023 at 5:20pm Flood Alert
26 Oct 2023 at 10:27pm Flood Alert
1 Aug 2023 at 4:01pm Flood Alert
23 Mar 2023 at 5:14pm Flood Alert
22 Mar 2023 at 12:08pm Flood Alert
9 Mar 2023 at 2:37pm Flood Alert
8 Mar 2023 at 2:16pm Flood Alert
24 Nov 2022 at 1:52pm Flood Alert
23 Nov 2022 at 6:06pm Flood Alert
22 Nov 2022 at 4:34pm Flood Alert
7 Nov 2022 at 2:29pm Flood Alert
6 Nov 2022 at 6:38pm Flood Alert
25 Oct 2022 at 7:23pm Flood Alert
18 Feb 2022 at 2:58pm Flood Alert
3 Jan 2022 at 5:00pm Flood Alert
7 Dec 2021 at 4:07pm Flood Alert
6 Dec 2021 at 2:02pm Flood Alert
3 Dec 2021 at 3:23pm Flood Alert

Related Flood Areas

Durford Mill to Midhurst, including Iping on the Western River Rother
West Sussex River Rother • Hampshire, West Sussex
Groundwater flooding in Finchdean, Dean Lane End and Rowlands Castle
Groundwater • Hampshire, West Sussex
Langstone and Emsworth
Langstone Harbour, Emsworth Harbour • Hampshire, West Sussex
Lower River Ems
River Ems • Hampshire, West Sussex
Stanbridge Stream at South Petersfield
Stanbridge Stream • Hampshire, West Sussex
Stanbridge Stream Petersfield
Stanbridge Stream • Hampshire, West Sussex
Westbourne, Lumley and Emsworth on the River Ems
River Ems • Hampshire, West Sussex
Western Rother
Western Rother • Hampshire, West Sussex

Official sources for this area

This area on the Environment Agency’s flood service →
Floodline quick dial: 216026 — call 0345 988 1188 and give that code for a recorded update on this area.
Area code: 065WAC162

Live warnings and area boundaries are the Environment Agency’s and the EA is the authority on them. Contains public sector information licensed under the Open Government Licence v3.0. This area in the EA’s own data.