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Inshore waters

Issued by the Met Office at 1200 UTC on Wednesday 16 August 2017

Inshore Waters Forecast to 12 miles offshore
for the period 1200 UTC Wednesday 16 August to 1200 UTC Thursday 17 August 2017

General situation

A large area of low pressure moving slowly northeastwards between Iceland and Scotland will bring very unsettled and at times windy conditions during the next two days.

Cape Wrath to Rattray Head including Orkney

24 hour forecast: Southerly or southeasterly 5 to 7, decreasing 4 at times. Slight or moderate, becoming rough for a time in far east, then again later in northwest. Occasional rain, showers later. Good, occasionally poor at first.

Outlook for the following 24 hours: Southerly or southwesterly 5 or 6, occasionally 7 at first in north, becoming cyclonic 4 or 5 later. Moderate or rough at first in north, otherwise slight or moderate, becoming smooth or slight in east. Showers. Mainly good.

Rattray Head to Berwick upon Tweed

24 hour forecast: South or southeast 5 or 6, occasionally 7 near Rattray Head, veering southwest 4 or 5 later. Slight or moderate, occasionally rough for a time near Rattray Head. Occasional rain, showers later. Good, occasionally moderate.

Outlook for the following 24 hours: Southwest backing south for a time, 4 or 5, increasing 6 or 7, perhaps gale 8 later. Slight or moderate, becoming moderate or rough later. Showers. Good.

Berwick upon Tweed to Whitby

24 hour forecast: South 5 or 6, veering west or southwest 4 or 5 later. Slight or moderate. Occasional rain for a time. Good, occasionally moderate.

Outlook for the following 24 hours: West or southwest, backing south for a time, 4 or 5, increasing 6 or 7 later. Slight or moderate. Showers for a time. Good.

Whitby to Gibraltar Point

24 hour forecast: South 3 or 4, increasing 5 or 6, then veering southwest 4 or 5 later. Smooth or slight becoming slight or moderate for a time. Rain for a time. Good, becoming moderate or poor for a time.

Outlook for the following 24 hours: Southwest backing southeast for a time, 4 or 5, increasing 6 later. Smooth or slight, becoming slight or moderate later. Showers for a time. Good.

Gibraltar Point to North Foreland

24 hour forecast: Southwesterly backing southerly for a time, 3 or 4, increasing 5 or 6. Smooth or slight becoming slight or moderate. Occasional rain later. Good, occasionally poor later.

Outlook for the following 24 hours: Southwesterly backing southerly for a time, 5 or 6. Slight or moderate. Showers. Good.

North Foreland to Selsey Bill

24 hour forecast: Southwesterly backing southerly for a time, 3 or 4, increasing 5 or 6. Smooth or slight, becoming slight or moderate later. Occasional rain or drizzle later. Good, occasionally poor later.

Outlook for the following 24 hours: Southwesterly 5 to 7, becoming variable 3 or 4 for a time. Slight or moderate. Occasional rain or showers. Good becoming moderate or poor for a time.

Selsey Bill to Lyme Regis

24 hour forecast: South 3 or 4, increasing 5 or 6, then veering southwest 4 or 5. Smooth or slight, becoming slight or moderate. Fair then occasional rain or drizzle. Good, becoming moderate, occasionally poor.

Outlook for the following 24 hours: Southwest 4 or 5, veering west 5 or 6. Slight or moderate. Occasional rain then showers. Good, occasionally moderate at first.

Lyme Regis to Lands End including the Isles of Scilly

24 hour forecast: South 5 or 6, veering southwest 4 or 5, decreasing 3 at times later. Moderate, occasionally rough for a time in west. Fair then occasional rain or drizzle, showers later. Good becoming moderate, occasionally poor for a time.

Outlook for the following 24 hours: Southwest 3 or 4, veering west 5 or 6, occasionally 7 later. Moderate, becoming rough in west. Showers. Good.

Lands End to St Davids Head including the Bristol Channel

24 hour forecast: South 5 to 7 veering southwest 4 or 5, occasionally 6 later. Slight in Severn estuary, otherwise moderate or rough. Rain or drizzle, showers later. Moderate or poor, becoming good later.

Outlook for the following 24 hours: Southwest veering west 5 or 6, occasionally 7 later. Moderate or rough. Showers. Good.

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

24 hour forecast: South veering southwest for a time, 6 or 7, decreasing 4 or 5. Moderate or rough becoming slight or moderate. Rain or drizzle, showers later. Moderate or poor, becoming good later.

Outlook for the following 24 hours: Southwest 5 or 6, veering west or southwest 5 to 7. Slight or moderate, becoming moderate or rough. Showers. Good.

Great Orme Head to the Mull of Galloway

24 hour forecast: Southerly veering westerly or southwesterly for a time, 6 or 7, occasionally gale 8 in west, decreasing 4 or 5. Moderate or rough until later in north and west, otherwise slight or moderate. Rain or drizzle, fair later. Good, becoming moderate or poor for a time.

Outlook for the following 24 hours: Southerly 4 or 5, veering southwesterly 5 to 7, occasionally gale 8. Slight or moderate, becoming moderate or rough. Showers. Good.

Isle of Man

24 hour forecast: South 6 to gale 8 veering southwest 3 or 4 later, then backing south or southwest 4 or 5. Moderate or rough, becoming slight or moderate later. Rain, fair later. Moderate, occasionally poor, becoming good later.

Outlook for the following 24 hours: South or southwest veering west or southwest, 4 or 5, increasing 5 to 7. Slight or moderate becoming moderate. Fair at first, then showers. Good, occasionally moderate.

Lough Foyle to Carlingford Lough

24 hour forecast: South veering southwest for a time, 7 or gale 8, decreasing 5 or 6. Moderate or rough, becoming slight or moderate later. Rain or drizzle, then showers. Moderate or poor, becoming good.

Outlook for the following 24 hours: South or southwest becoming cyclonic 5 or 6, then becoming west 5 to 7 later. Slight or moderate, occasionally rough later. Showers, occasionally thundery. Mainly good.

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

24 hour forecast: Southerly veering southwesterly for a time, 7 or gale 8, decreasing 5 or 6. Moderate or rough, becoming slight or moderate later. Rain or drizzle, then showers. Moderate or poor, becoming good.

Outlook for the following 24 hours: Southerly or southwesterly becoming cyclonic 5 or 6, then becoming westerly 5 to 7 later. Slight or moderate, occasionally rough later. Showers, occasionally thundery. Mainly good.

Mull of Kintyre to Ardnamurchan Point

24 hour forecast: South veering southwest 5 to 7, occasionally gale 8 at first. Moderate or rough, becoming slight or moderate later in southeast. Rain then showers. Moderate or poor, becoming good.

Outlook for the following 24 hours: Southwest becoming cyclonic, then west later, 5 to 7. Moderate, occasionally rough. Showers. Mainly good.

The Minch

24 hour forecast: Southeast veering south, then veering southwest later, 6 to gale 8, decreasing 5 for a time. Slight or moderate, occasionally rough in south. Rain then showers. Moderate or poor, becoming good.

Outlook for the following 24 hours: Southwest 5 to 7, occasionally gale 8 at first, becoming cyclonic 4 or 5 later. Moderate, occasionally rough in far north and in far south, becoming smooth or slight in central areas. Showers. Mainly good.

Ardnamurchan Point to Cape Wrath

24 hour forecast: Southeast veering south, then veering southwest later, 6 to gale 8, decreasing 5 for a time. Moderate or rough, becoming rough or very rough later in west. Rain then showers. Moderate or poor, becoming good.

Outlook for the following 24 hours: Southwest 5 to 7, occasionally gale 8 at first, becoming cyclonic 4 or 5 later. Rough or very rough becoming moderate or rough, then slight or moderate later. Showers. Mainly good.

Shetland Isles

24 hour forecast: South 4 or 5, increasing 6 or 7 for a time. Moderate, occasionally rough. Showers, rain for a time. Good, becoming moderate for a time.

Outlook for the following 24 hours: . . . .

Channel Islands

24 hour forecast: Southerly 3 to 4 in the north of the area, variable 2 to 3 in the south, generally increasing this evening to be 5 to 6 by midnight, veering south to southwest 3 to 5 by dawn, becoming variable 2 in the south for a time. Smooth or slight, increasing slight to moderate overnight, perhaps locally rather rough in the north for a time. Occasional rain spreading in from the west overnight. Good, becoming moderate to poor overnight.

Outlook for the following 24 hours: South to southwest 2 to 4, perhaps locally 5, veering west 4 to 5 by early evening, locally 6 in the north by midnight. Slight to moderate with a low swell, increasing moderate to rather rough on Friday. Occasional rain and drizzle clearing overnight isolated showers developing during the morning. Moderate to poor becoming good overnight.

Inshore waters overview

Forecasts for UK inshore waters are issued four times a day and cover a period of 24 hours from 0000, 0600, 1200 and 1800 UTC.

The coastal waters, up to 12 miles offshore, around the British Isles are divided into 19 areas.

The forecast contains details of forecast wind direction and force, weather, visibility and sea state.

Strong coastal winds (Strong Breeze force 6 or more) are displayed for the first 24 hours of the inshore waters forecast.

In the UK, the Maritime & Coastguard Agency (MCA) is responsible for the provision of Maritime Safety Information (MSI) to ships at sea, which includes the broadcast of warnings and forecasts. The Met Office initiates warnings and prepares routine forecasts for dissemination on behalf of the MCA.

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