Inshore Waters

Valid

From: Sat 15th May at 00:00 UTC

To: Sun 16th May at 00:00 UTC

Summary

An Atlantic low arrives into the Southwest Approaches on Saturday and loses its identity over southern England on Sunday, maintaining unsettled conditions through the weekend, especially in the south.

Issued at: 00:01 UTC on 15th May

Regions

From Cape Wrath to Rattray Head including Orkney

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24 hour forecast:

Wind

Northeast 3 or 4, backing northwest, occasionally variable for a time, 2 to 4.

Sea State

Slight or moderate.

Weather

Showers, rain later.

Visibility

Good, occasionally moderate later.

Outlook for the following 24 hours:

Wind

Variable 2 to 4.

Sea State

Slight or moderate.

Weather

Rain or drizzle, fog patches near Orkney.

Visibility

Moderate or good, occasionally very poor.

Rattray Head to Berwick on Tweed

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24 hour forecast:

Wind

Variable, becoming south or southeast, 2 to 4.

Sea State

Slight or moderate, but smooth or slight in Firth of Forth.

Weather

Rain later in north.

Visibility

Good, occasionally moderate later.

Outlook for the following 24 hours:

Wind

South or southeast, 2 to 4.

Sea State

Slight or moderate, but smooth or slight in Firth of Forth.

Weather

Rain or drizzle at first.

Visibility

Good, occasionally poor at first.

Berwick on Tweed to Whitby

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24 hour forecast:

Wind

Variable 3 or less, becoming southeast, 3 or 4.

Sea State

Slight or moderate.

Weather

Fair.

Visibility

Good.

Outlook for the following 24 hours:

Wind

East or southeast, 2 to 4.

Sea State

Slight or moderate.

Weather

Showers at first.

Visibility

Good.

Whitby to Gibraltar Point

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24 hour forecast:

Wind

South or southeast, 2 to 4.

Sea State

Moderate in north, slight in south.

Weather

Showers.

Visibility

Good.

Outlook for the following 24 hours:

Wind

South, veering southwest, then becoming variable, 2 to 4.

Sea State

Moderate in north, slight in south.

Weather

Thundery showers, fair later.

Visibility

Good, occasionally poor until later.

Gibraltar Point to North Foreland

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24 hour forecast:

Wind

Variable, mainly southerly, 3 or 4, decreasing 2 at times.

Sea State

Smooth or slight.

Weather

Occasional rain or showers.

Visibility

Moderate or good, occasionally poor.

Outlook for the following 24 hours:

Wind

Variable 2 to 4, becoming southwesterly 3 to 5.

Sea State

Smooth or slight, occasionally moderate later in south.

Weather

Thundery showers.

Visibility

Good, occasionally poor.

North Foreland to Selsey Bill

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Strong winds warning issued

24 hour forecast:

Wind

Variable 2 to 4, becoming southwesterly 4 to 6 later.

Sea State

Smooth or slight, becoming slight or moderate.

Weather

Rain or showers.

Visibility

Moderate or good, occasionally poor.

Outlook for the following 24 hours:

Wind

Westerly or southwesterly 4 to 6.

Sea State

Slight or moderate, occasionally rough later in south.

Weather

Thundery showers.

Visibility

Good, occasionally poor.

Selsey Bill to Lyme Regis

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Strong winds warning issued

24 hour forecast:

Wind

South 2 to 4, veering southwest 4 or 5, occasionally 6 later.

Sea State

Smooth or slight, becoming slight or moderate.

Weather

Rain then showers.

Visibility

Moderate or good, occasionally poor at first.

Outlook for the following 24 hours:

Wind

West or southwest 4 to 6.

Sea State

Slight or moderate, becoming moderate or rough later.

Weather

Thundery showers.

Visibility

Good, occasionally poor.

Lyme Regis to Lands End including the Isles of Scilly

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Strong winds warning issued

24 hour forecast:

Wind

South veering west or southwest, 4 to 6.

Sea State

Slight or moderate, occasionally rough later in west.

Weather

Rain then showers, perhaps thundery.

Visibility

Good, occasionally poor.

Outlook for the following 24 hours:

Wind

Southwest veering west, 4 to 6, occasionally 7 later.

Sea State

Moderate or rough, occasionally very rough in west.

Weather

Thundery showers.

Visibility

Good, occasionally poor.

Lands End to St Davids Head including the Bristol Channel

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Strong winds warning issued

24 hour forecast:

Wind

South or southeast, veering west or southwest, 4 to 6.

Sea State

Slight or moderate, occasionally rough later in west.

Weather

Rain then showers, perhaps thundery.

Visibility

Moderate or good, occasionally poor.

Outlook for the following 24 hours:

Wind

West or southwest 4 to 6, becoming variable 2 or 3 for a time in Bristol Channel.

Sea State

Moderate or rough, occasionally very rough near Lands End.

Weather

Thundery showers.

Visibility

Good, occasionally poor.

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

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Strong winds warning issued

24 hour forecast:

Wind

Southeast 4 to 6, veering southwest, 3 to 5.

Sea State

Smooth or slight, becoming slight or moderate.

Weather

Rain then showers.

Visibility

Good, occasionally moderate.

Outlook for the following 24 hours:

Wind

Southwest, 3 to 5, becoming variable, 2 to 4.

Sea State

Slight or moderate in south, smooth or slight in north, occasionally rough near St Davids Head.

Weather

Showers, perhaps thundery at times.

Visibility

Good, occasionally poor.

Great Ormes Head to the Mull of Galloway

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24 hour forecast:

Wind

East or southeast 2 to 4, occasionally 5 at first.

Sea State

Smooth or slight.

Weather

Rain or showers, perhaps thundery.

Visibility

Good, occasionally moderate or poor.

Outlook for the following 24 hours:

Wind

East or southeast, 3 to 5, becoming variable 3 or less, then northwest, 2 or 3 later.

Sea State

Smooth or slight.

Weather

Showers, perhaps thundery.

Visibility

Good, occasionally poor.

Isle of Man

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24 hour forecast:

Wind

Southeast, 3 to 5.

Sea State

Smooth or slight, occasionally moderate later.

Weather

Rain or showers, perhaps thundery.

Visibility

Good, occasionally moderate or poor.

Outlook for the following 24 hours:

Wind

Southeast, 3 or 4, becoming variable 3 or less, then northwest, 4 or 5 later.

Sea State

Smooth or slight.

Weather

Showers, perhaps thundery.

Visibility

Good, occasionally poor.

Lough Foyle to Carlingford Lough

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24 hour forecast:

Wind

East or southeast, 4 or 5, decreasing 2 or 3 later.

Sea State

Smooth or slight.

Weather

Showers, perhaps thundery.

Visibility

Good, occasionally poor.

Outlook for the following 24 hours:

Wind

Variable 2 to 4, becoming northwest, 4 or 5 later.

Sea State

Smooth or slight.

Weather

Showers, perhaps thundery.

Visibility

Good, occasionally poor.

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

Easterly or southeasterly 3 or 4, becoming variable 2 to 4 later.

Sea State

Smooth or slight.

Weather

Showers, perhaps thundery.

Visibility

Good, occasionally poor.

Outlook for the following 24 hours:

Wind

Variable 2 to 4, becoming northwesterly 4 or 5 later.

Sea State

Smooth or slight.

Weather

Showers, perhaps thundery.

Visibility

Good, occasionally poor.

Mull of Kintyre to Ardnamurchan Point

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24 hour forecast:

Wind

East or southeast, 3 to 5, becoming variable, 2 to 4 later.

Sea State

Smooth or slight, becoming slight or moderate later.

Weather

Showers.

Visibility

Good.

Outlook for the following 24 hours:

Wind

Variable, 2 to 4, becoming northwest, 3 to 5 later.

Sea State

Slight or moderate.

Weather

Showers.

Visibility

Good.

The Minch

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24 hour forecast:

Wind

East or northeast, 3 to 5.

Sea State

Smooth or slight, occasionally moderate in north.

Weather

Showers.

Visibility

Good.

Outlook for the following 24 hours:

Wind

North or northeast 3 to 5, becoming variable 2 to 4 later.

Sea State

Smooth or slight, occasionally moderate in north.

Weather

Showers.

Visibility

Good.

Ardnamurchan Point to Cape Wrath including the Outer Hebrides

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24 hour forecast:

Wind

East or northeast, 3 to 5.

Sea State

Slight or moderate.

Weather

Showers.

Visibility

Good.

Outlook for the following 24 hours:

Wind

North or northeast 3 to 5, becoming variable 2 to 4 later.

Sea State

Slight or moderate, occasionally rough in west.

Weather

Showers.

Visibility

Good.

Shetland Isles

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24 hour forecast:

Wind

North 4 or 5, becoming cyclonic 3 or less.

Sea State

Moderate or rough, occasionally slight in shelter.

Weather

Showers, fog patches.

Visibility

Moderate or good, occasionally very poor.

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

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Valid Saturday 15 May 2021 at 0000 UTC until Saturday 15 May 2021 at 1200 UTC

General situation:

A shallow low will move west across Shetland waters on Saturday.

Forecast:

Wind

North 4 or 5 becoming cyclonic 3 or less

Sea State

Moderate or rough, but slight just to southwest of shetland.

Weather

Showers, fog patches.

Visibility

Moderate or good, occasionally very poor.

Outlook for 12 Hours from 1200 UTC on Saturday 15 May until 0000 UTC on Sunday 16 May:

Wind

Cyclonic 3 or less

Sea State

Moderate, but rough in far northwest, and smooth or slight in sheltered coastal waters.

Weather

Showers, fog patches.

Visibility

Moderate or good, occasionally very poor.

The Channel Islands

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Strong winds warning issued

24 hour forecast:

Wind

South to southeast 4 to 5, perhaps locally 6, veering to southwest to west around dawn, occasionally 6 until noon.

Sea State

Slight with a low swell, increasing moderate to rather rough by noon.

Weather

Rain, locally heavy, clearing eastward by dawn, then scattered showers, locally heavy, becoming less frequent from noon.

Visibility

Moderate to good, locally poor, becoming good, locally moderate.

Outlook for the following 24 hours:

Wind

Southwest 4 to 6, locally 7 by noon, veering west by dusk.

Sea State

Slight to moderate with a low to moderate swell in the southeast to rather rough to rough in the northwest, increasing rather rough to very rough during the afternoon.

Weather

Scattered showers, locally heavy, becoming more frequent from late morning.

Visibility

Good, locally moderate.

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

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