Inshore Waters

Valid

From: Mon 20th Sep at 12:00 UTC

To: Tue 21st Sep at 12:00 UTC

Summary

A ridge of high pressure will build across central and southern parts of the British Isles. However deep areas of low pressure moving past Iceland will bring unsettled conditions and strong winds at times to the far north, with a risk of gales on Tuesday.

Issued at: 12:00 UTC on 20th Sep

Regions

From Cape Wrath to Rattray Head including Orkney

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Strong winds warning issued

24 hour forecast:

Wind

West or southwest 4 to 6, occasionally 3 at first near Aberdeenshire, increasing 7 at times near Cape Wrath.

Sea State

Smooth or slight in Moray Firth, otherwise slight or moderate, but becoming rough or very rough to the west and north of Orkney.

Weather

Fair, then rain or showers.

Visibility

Moderate or good, occasionally poor.

Outlook for the following 24 hours:

Wind

West or southwest 4 to 6, increasing 7 or gale 8 for a time, and occasionally severe gale 9 for a time near Cape Wrath.

Sea State

Rough or very rough to the west and north of Orkney, elsewhere mainly slight or moderate, but becoming smooth or slight later in Moray Firth.

Weather

Showers, occasional drizzle later.

Visibility

Moderate or good.

Rattray Head to Berwick on Tweed

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24 hour forecast:

Wind

West or southwest 3 to 5.

Sea State

Slight or moderate, becoming slight.

Weather

Mainly fair.

Visibility

Good.

Outlook for the following 24 hours:

Wind

Southwest 4 to 6, occasionally 7 later.

Sea State

Slight, becoming moderate except in far south.

Weather

Fair.

Visibility

Good.

Berwick on Tweed to Whitby

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24 hour forecast:

Wind

Variable 2 to 4, becoming west 3 to 5 for a time.

Sea State

Slight, occasionally smooth later.

Weather

Mainly fair.

Visibility

Good.

Outlook for the following 24 hours:

Wind

Variable 2 to 4 becoming southwest 3 to 5, occasionally 6 later.

Sea State

Slight, occasionally smooth.

Weather

Fair.

Visibility

Good.

Whitby to Gibraltar Point

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24 hour forecast:

Wind

North or northwest 3 to 5 becoming variable 3 or less, then occasionally 4 again later.

Sea State

Slight, occasionally smooth in south.

Weather

Showers then fair.

Visibility

Good, occasionally moderate.

Outlook for the following 24 hours:

Wind

Variable 3 or less becoming west or southwest 3 to 5.

Sea State

Smooth or slight.

Weather

Fair.

Visibility

Good.

Gibraltar Point to North Foreland

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24 hour forecast:

Wind

Variable 3 or less, increasing 4 at times.

Sea State

Slight, becoming smooth or slight.

Weather

Showers then fair.

Visibility

Good, occasionally moderate.

Outlook for the following 24 hours:

Wind

Variable 3 or less becoming southwesterly 3 or 4.

Sea State

Smooth or slight.

Weather

Fair.

Visibility

Good.

North Foreland to Selsey Bill

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24 hour forecast:

Wind

Northerly or northeasterly 3 or 4, occasionally 5 at first in east, becoming variable 3 or less later.

Sea State

Slight, becoming smooth or slight later.

Weather

Showers then fair.

Visibility

Good, occasionally moderate at first.

Outlook for the following 24 hours:

Wind

Variable 3 or less, occasionally 4 later in east.

Sea State

Smooth or slight.

Weather

Fair.

Visibility

Good.

Selsey Bill to Lyme Regis

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24 hour forecast:

Wind

North or northeast 3 or 4, becoming variable 3 or less later.

Sea State

Slight, becoming smooth or slight.

Weather

Fair.

Visibility

Good.

Outlook for the following 24 hours:

Wind

Variable 3 or less.

Sea State

Smooth or slight.

Weather

Fair.

Visibility

Good.

Lyme Regis to Lands End including the Isles of Scilly

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24 hour forecast:

Wind

North 3 or 4, occasionally variable 2 at first, then becoming variable mainly northeast 3 or less later.

Sea State

Smooth or slight in east, slight or moderate in west.

Weather

Showers in far west.

Visibility

Good.

Outlook for the following 24 hours:

Wind

Variable 3 or less.

Sea State

Smooth or slight in east, slight or moderate in west.

Weather

Fair.

Visibility

Good.

Lands End to St Davids Head including the Bristol Channel

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24 hour forecast:

Wind

North or northwest 3 to 5 becoming variable 3 or less.

Sea State

Slight or moderate, becoming smooth or slight later in east.

Weather

Showers in far west.

Visibility

Good.

Outlook for the following 24 hours:

Wind

Variable 3 or less, becoming west or southwest 2 to 4 later.

Sea State

Slight or moderate near Cornwall, but elsewhere smooth or slight.

Weather

Fair.

Visibility

Good.

St Davids Head to Great Ormes Head, including St Georges Channel

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24 hour forecast:

Wind

Variable, but mainly northwest at first and southwest later, 3 or less, increasing 4 at times.

Sea State

Slight or moderate at first in south, otherwise smooth or slight.

Weather

Showers for a time.

Visibility

Good.

Outlook for the following 24 hours:

Wind

Westerly 2 or 3 at first in south, otherwise southwesterly 3 or 4, occasionally 5 later in north.

Sea State

Smooth or slight, becoming slight or moderate later.

Weather

Fair.

Visibility

Good.

Great Ormes Head to the Mull of Galloway

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24 hour forecast:

Wind

Variable becoming west or northwest, then backing west or southwest later, 2 to 4.

Sea State

Smooth, occasionally slight.

Weather

Showers for a time.

Visibility

Good.

Outlook for the following 24 hours:

Wind

Westerly or southwesterly 3 to 5, occasionally 2 at first in Liverpool Bay, increasing 6 at times later in north.

Sea State

Smooth or slight, becoming slight or moderate except in Liverpool Bay.

Weather

Fair.

Visibility

Good.

Isle of Man

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24 hour forecast:

Wind

West or southwest, veering northwest for a time, 2 to 4.

Sea State

Smooth or slight.

Weather

Fair.

Visibility

Good.

Outlook for the following 24 hours:

Wind

Southwest 4 or 5, occasionally 3 at first, increasing 6 at times later.

Sea State

Smooth or slight becoming slight or moderate.

Weather

Fair.

Visibility

Good.

Lough Foyle to Carlingford Lough

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24 hour forecast:

Wind

West or southwest 3 or 4, occasionally 2 at first, increasing 5 at times later.

Sea State

In far north, slight or moderate becoming moderate or rough, but elsewhere smooth or slight.

Weather

Showers then fair.

Visibility

Good, occasionally moderate.

Outlook for the following 24 hours:

Wind

Southwest 3 to 5, occasionally 6 later.

Sea State

Moderate or rough in far north, but elsewhere smooth or slight becoming slight or moderate.

Weather

Occasional drizzle for a time.

Visibility

Good, occasionally moderate.

The Mull of Galloway to Mull of Kintyre including the Firth of Clyde and the North Channel

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24 hour forecast:

Wind

Westerly or southwesterly 2 to 4, occasionally 5 at first.

Sea State

Smooth or slight, occasionally moderate near the Mull of Kintyre.

Weather

Showers then fair.

Visibility

Good, occasionally moderate.

Outlook for the following 24 hours:

Wind

Southerly or southwesterly 4 or 5, occasionally 3 at first, increasing 6 at times later.

Sea State

Moderate or rough near the Mull of Kintyre, but elsewhere smooth or slight becoming slight or moderate.

Weather

Occasional drizzle for a time.

Visibility

Good, occasionally moderate.

Mull of Kintyre to Ardnamurchan Point

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Strong winds warning issued

24 hour forecast:

Wind

Southwesterly 3 to 5, veering westerly 2 to 4 for a time, then occasionally 6 later in far north.

Sea State

Slight or moderate, becoming moderate or rough except in shelter.

Weather

Drizzle at times then showers.

Visibility

Good, occasionally moderate at first.

Outlook for the following 24 hours:

Wind

Southerly or southwesterly 4 to 6, increasing 7 or gale 8 for a time in north.

Sea State

Slight at first in shelter, otherwise moderate or rough, becoming rough or very rough later.

Weather

Occasional drizzle.

Visibility

Good, occasionally poor.

The Minch

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Strong winds warning issued

24 hour forecast:

Wind

Southwesterly, veering westerly for a time, 4 to 6, occasionally 7 later in north.

Sea State

Slight or moderate, occasionally smooth until later just north of Skye, then becoming rough later in far north.

Weather

Drizzle at times, then showers.

Visibility

Good, occasionally moderate.

Outlook for the following 24 hours:

Wind

Southwesterly 6 to gale 8, occasionally 5 at first in south, then increasing severe gale 9 at times in north, veering westerly 3 to 5 later.

Sea State

Moderate or rough in north, west and south, but slight or moderate in east and just north of Skye.

Weather

Occasional drizzle.

Visibility

Good, occasionally poor.

Ardnamurchan Point to Cape Wrath including the Outer Hebrides

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Strong winds warning issued

24 hour forecast:

Wind

Southwesterly, veering westerly for a time, 4 to 6, occasionally 7 at first near Cape Wrath, and then later elsewhere in north.

Sea State

Moderate or rough becoming rough or very rough.

Weather

Drizzle at times, then showers.

Visibility

Good, occasionally moderate.

Outlook for the following 24 hours:

Wind

Southwesterly 6 to gale 8, occasionally severe gale 9 in north, veering westerly 4 to 6 later.

Sea State

Rough or very rough.

Weather

Occasional drizzle.

Visibility

Good, occasionally poor.

Shetland Isles

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Strong winds warning issued

24 hour forecast:

Wind

Southerly veering westerly or southwesterly, 5 or 6, occasionally 7 until later in north, decreasing 4 at times later in south.

Sea State

Moderate or rough, becoming rough or very rough later in north, west and south, but becoming slight or moderate in east.

Weather

Rain then showers, becoming mainly fair later.

Visibility

Good, occasionally moderate.

For Coastal areas up to 60 nautical miles from Lerwick, Shetland

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Strong winds warning issued

Valid Monday 20 Sep 2021 at 1200 UTC until Tuesday 21 Sep 2021 at 0000 UTC

General situation:

Deep area of low pressure will move northeastwards across Iceland during Monday. Associated trough will cross Shetland Waters with a ridge building behind on Tuesday.

Forecast:

Wind

Southerly or southwesterly 5 or 6, occasionally 7 in the north.

Sea State

Moderate or rough, becoming very rough later in the west.

Weather

Rain then showers.

Visibility

Good, occasionally moderate.

Outlook for 12 Hours from 0000 UTC on Tuesday 21 Sep until 1200 UTC on Tuesday 21 Sep:

Wind

Westerly or southwesterly 5 or 6, occasionally 7 at first in the north.

Sea State

Rough or very rough, occasionally moderate in the east at first.

Weather

Mainly fair.

Visibility

Mainly good.

The Channel Islands

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24 hour forecast:

Wind

North or northwest 3 or 4, locally 5 until dusk, veering north or northeast 2 to 4 overnight, then becoming locally east or variable after dawn.

Sea State

Slight, occasionally smooth after dawn, with a low swell.

Weather

Fair.

Visibility

Good.

Outlook for the following 24 hours:

Wind

Northeast 2 to 4, becoming locally variable 2 or 3, mainly after dusk.

Sea State

Smooth locally slight, with a low swell.

Weather

Fair.

Visibility

Good.

Inshore Waters information supplied by the Met Office on behalf of the Maritime and Coastguard Agency (MCA).

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