Met Office

Inshore waters forecast

Issued by the Met Office at 0001 UTC on Monday 20 August 2018

Inshore Waters Forecast to 12 miles offshore
for the period 0000 UTC Monday 20 August to 0000 UTC Tuesday 21 August 2018

General situation

A slack pressure pattern will prevail across the British Isles during the next 24 hours. As a consequence the wind speed during Monday will be mainly only light to moderate in strength.

Cape Wrath to Rattray Head including Orkney

24 hour forecast: Variable 3 or less, increasing 4 at times. Slight or moderate to the west and north of Orkney, but smooth or slight elsewhere. Showers, mainly in north. Good.

Outlook for the following 24 hours: Variable 3 or less becoming south or southeast 3 or 4, then increasing 5 or 6 later. Smooth or slight until later in south, otherwise slight or moderate. Rain later. Good, becoming moderate later in northwest.


Rattray Head to Berwick upon Tweed

24 hour forecast: Variable 3 or less, occasionally 4 later. Smooth or slight. Showers then fair. Moderate or good.

Outlook for the following 24 hours: Variable 3 or less becoming south or southeast 4 or 5, occasionally 6 later. Smooth or slight becoming slight or moderate. Mainly fair. Good, occasionally poor.


Berwick upon Tweed to Whitby

24 hour forecast: Variable, becoming mainly southeast later, 3 or less, occasionally 4 later. Smooth or slight. Showers then fair. Moderate or good.

Outlook for the following 24 hours: South or southeast 3 or 4, occasionally 2 at first, increasing 5 at times later. Smooth or slight, becoming slight. Showers. Good, occasionally poor.


Whitby to Gibraltar Point

24 hour forecast: Northwest 3 or 4 becoming variable 3 or less. Smooth or slight. Showers, mainly later, fog patches. Moderate or good, occasionally very poor.

Outlook for the following 24 hours: Variable 3 or less becoming southeast 3 or 4. Smooth or slight, becoming slight. Showers, fog patches. Moderate or good, occasionally very poor.


Gibraltar Point to North Foreland

24 hour forecast: Westerly or northwesterly 3 or 4 becoming variable 2, then southerly or southeasterly 3 or 4 later. Smooth or slight. Showers, mainly later. Moderate or good.

Outlook for the following 24 hours: Southerly or southeasterly 3 or 4, occasionally variable 2 at first in north. Smooth or slight. Showers. Moderate or good.


North Foreland to Selsey Bill

24 hour forecast: Westerly or southwesterly 3 or 4, occasionally variable 2 at first. Slight or moderate becoming smooth or slight. Mainly fair. Moderate or good, occasionally poor at first.

Outlook for the following 24 hours: Westerly or southwesterly 3 or 4, occasionally 2 at first. Smooth or slight. Fog patches developing. Moderate or good, occasionally very poor.


Selsey Bill to Lyme Regis

24 hour forecast: West or northwest 3 or 4, backing southwest 4 or 5 for a time later. Slight or moderate becoming smooth or slight. Fog patches later. Moderate or good, occasionally very poor later.

Outlook for the following 24 hours: Variable mainly northwest 3 or less becoming southwest 3 or 4. Smooth or slight. Fog patches. Moderate or good, occasionally very poor.


Lyme Regis to Lands End including the Isles of Scilly

24 hour forecast: West or southwest 3 or 4. Smooth or slight in east, slight or moderate in west. Drizzle at times, fog patches in east, fog banks in west. Moderate or good, occasionally very poor.

Outlook for the following 24 hours: West or southwest 3 or 4, becoming variable 3 or less for a time. Moderate at first near the Isles of Scilly, otherwise smooth or slight. Fog patches at first. Moderate or good, occasionally very poor at first.


Lands End to St Davids Head including the Bristol Channel

24 hour forecast: Westerly or southwesterly 3 or 4, occasionally 5 in Bristol Channel, decreasing 2 at times in west. Slight or moderate. Drizzle at times, fog patches. Moderate or good, occasionally very poor.

Outlook for the following 24 hours: West or northwest 3 or 4, occasionally 2 at first, then backing west or southwest later. Slight, occasionally moderate at first near Cornwall. Mainly fair. Moderate or good.


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

24 hour forecast: Variable in far north, otherwise southerly or southwesterly, 3 or 4, decreasing 2 at times. Slight, occasionally moderate in south. Drizzle at times, fog patches. Moderate or good, occasionally very poor.

Outlook for the following 24 hours: Southerly or southwesterly 2 or 3 increasing 4 or 5, occasionally 6 later in north. Slight, becoming slight or moderate. Fog patches at first. Moderate or good, occasionally very poor at first.


Great Orme Head to the Mull of Galloway

24 hour forecast: Northwest becoming variable 3 or less, increasing 4 at times. Smooth or slight. Showers. Good, occasionally poor.

Outlook for the following 24 hours: Variable 3 or less becoming southerly or southwesterly 4 or 5, occasionally 6 later in north. Smooth or slight, becoming moderate later in north. Fog patches for a time. Moderate or good, occasionally very poor for a time.


Isle of Man

24 hour forecast: Variable 3 or less. Smooth or slight. Fog patches later. Moderate or good, occasionally very poor later.

Outlook for the following 24 hours: Variable 3 or less becoming south or southwest 3 or 4, then increasing 5 or 6 later. Smooth or slight, becoming moderate later. Fog patches until later. Moderate or poor, occasionally very poor, becoming good later.


Lough Foyle to Carlingford Lough

24 hour forecast: Variable, becoming south or southeast later, 3 or less, increasing 4 at times. Slight or moderate at first in far north, otherwise smooth or slight. Showers, mainly later, fog patches later. Moderate or good, occasionally very poor later.

Outlook for the following 24 hours: South 3 or 4, occasionally variable 2 at first, then increasing 5 or 6 later. Smooth or slight, becoming slight or moderate later. Fog patches at first. Moderate or good, occasionally very poor at first.


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

24 hour forecast: Northwesterly 3 or 4 becoming variable 3 or less, then becoming southerly later. Smooth or slight. Mainly fair. Good.

Outlook for the following 24 hours: Southerly 3 or 4, occasionally variable 2 at first, then increasing 5 or 6 later. Smooth or slight, becoming slight or moderate later. Fog patches for a time. Moderate or good, occasionally very poor for a time.


Mull of Kintyre to Ardnamurchan Point

24 hour forecast: Northwest 3 or 4 becoming variable 3 or less. Slight or moderate, becoming slight later. Showers, mainly later. Good.

Outlook for the following 24 hours: Variable 3 or less becoming south or southeast 4 or 5, then increasing 6 or 7 later. Slight, becoming slight or moderate. Showers. Good.


The Minch

24 hour forecast: West or northwest becoming variable, 3 or less, occasionally 4 at first. Smooth or slight. Showers then fair. Good.

Outlook for the following 24 hours: Variable 3 or less becoming south or southwest 4 or 5, then increasing 6 or 7 later. Smooth or slight becoming slight or moderate. Rain later. Good, becoming moderate or poor later.


Ardnamurchan Point to Cape Wrath

24 hour forecast: West or northwest becoming variable, 3 or less, occasionally 4 at first. Slight or moderate. Showers then fair. Good.

Outlook for the following 24 hours: Variable 3 or less becoming south or southwest 4 or 5, then increasing 6 or 7 later. Slight or moderate, becoming moderate or rough later. Rain later. Good, becoming moderate or poor later.


Shetland Isles

24 hour forecast: West or northwest 3 or 4, becoming variable 2 at times later. Slight or moderate. Showers. Good.

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

Valid Monday 20 Aug 2018 at 0000 UTC until Monday 20 Aug 2018 at 1200 UTC

General situation: A showery westerly airflow will cover Shetland waters over the next 24 hours.

Forecast: West or northwest 3 or 4 Slight or moderate, locally smooth in lee shelter east of Shetland Showers Good occasionally moderate

Outlook for 12 Hours from 1200 UTC on Monday 20 Aug until 0000 UTC on Tuesday 21 Aug: West 2 or 3, occasionally 4 at first Slight or moderate, locally smooth in lee shelter east of Shetland Showers Good


Channel Islands

24 hour forecast: Westerly 3 or 4, veering northwesterly Jersey southwards at times, generally decreasing 2 or 3 by dawn. Slight, locally moderate at first. Misty with fog patches, except in the far north of the area until dawn, becoming more extensive after dawn, risk of a little rain or drizzle at times. Moderate to very poor, locally moderate or good in the north at first.

Outlook for the following 24 hours: West or variable 1 to 3. Smooth or slight with a low swell. Misty with fog becoming patchy during Tuesday morning, mostly clearing during the afternoon, but returning again in the evening, a little rain or drizzle at times until mid-morning. Moderate to very poor, becoming locally moderate or good Tuesday afternoon.