Coast and sea

Inshore waters and strong winds

General situation

Low pressure will dominate the weather across the British Isles during the next couple of days, bringing unsettled conditions and some very strong winds, especially in southern parts.

Issued at:

For coastal areas up to 12 miles offshore for the period to

Inshore waters forecast and strong winds map

Cape Wrath to Rattray Head including Orkney (1)

Strong winds are forecast

24 hour forecast:

Wind
Northwesterly backing westerly 4 to 6, occasionally 7 in north.
Sea state
Slight or moderate in Moray Firth, but elsewhere moderate or rough, occasionally very rough in north.
Weather
Showers.
Visibility
Good, occasionally moderate.

Outlook for the following 24 hours:

Wind
Westerly backing southwesterly 4 to 6, occasionally 7 in north.
Sea state
Rough or very rough in north, otherwise slight or moderate, occasionally rough at first.
Weather
Showers.
Visibility
Good, occasionally poor.

Rattray Head to Berwick upon Tweed (2)

Strong winds are forecast

24 hour forecast:

Wind
Westerly or southwesterly 5 to 7, occasionally 4 in north, increasing gale 8 for a time later in south.
Sea state
Slight or moderate, occasionally rough at first near Rattray Head.
Weather
Showers.
Visibility
Good, occasionally moderate.

Outlook for the following 24 hours:

Wind
West or southwest 5 to 7, becoming variable 3 or 4 for a time.
Sea state
Slight or moderate.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Berwick upon Tweed to Whitby (3)

Strong winds are forecast

24 hour forecast:

Wind
West or southwest 5 to 7, increasing gale 8 at times.
Sea state
Slight or moderate.
Weather
Showers, becoming fair later.
Visibility
Good, occasionally moderate.

Outlook for the following 24 hours:

Wind
Southwest, veering west for a time, 4 to 6.
Sea state
Slight or moderate.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Whitby to Gibraltar Point (4)

Strong winds are forecast

24 hour forecast:

Wind
West or southwest 5 to 7, increasing gale 8 at times, then backing south 4 to 6 later.
Sea state
Slight or moderate.
Weather
Showers.
Visibility
Good, occasionally moderate.

Outlook for the following 24 hours:

Wind
Southerly or southwesterly, veering westerly for a time, 4 to 6, increasing 7 or gale 8 for a time in south.
Sea state
Slight or moderate.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Gibraltar Point to North Foreland (5)

Strong winds are forecast

24 hour forecast:

Wind
Westerly or southwesterly, backing southerly later, 5 to 7, increasing gale 8 at times.
Sea state
Slight or moderate.
Weather
Rain or showers.
Visibility
Good, occasionally moderate.

Outlook for the following 24 hours:

Wind
Southerly or southwesterly 5 to 7, occasionally gale 8 at first, decreasing 4 at times later.
Sea state
Slight or moderate, occasionally rough at first.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

North Foreland to Selsey Bill (6)

Strong winds are forecast

24 hour forecast:

Wind
Cyclonic 3 to 5 becoming westerly or southwesterly 6 to gale 8, increasing severe gale 9 at times.
Sea state
Moderate, becoming rough or very rough.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Outlook for the following 24 hours:

Wind
Southwesterly 6 to gale 8, occasionally severe gale 9 until later.
Sea state
Moderate or rough, occasionally very rough.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Selsey Bill to Lyme Regis (7)

Strong winds are forecast

24 hour forecast:

Wind
Cyclonic 5 to 7 becoming west 6 to gale 8, occasionally severe gale 9 at first, then backing southwest later.
Sea state
Moderate or rough becoming rough or very rough.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Outlook for the following 24 hours:

Wind
West or southwest 6 to gale 8, occasionally 5 later.
Sea state
Rough or very rough, occasionally moderate later.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Lyme Regis to Lands End including the Isles of Scilly (8)

Strong winds are forecast

24 hour forecast:

Wind
West 7 to severe gale 9, occasionally 6 at first, then backing southwest 6 to gale 8 later.
Sea state
Rough or very rough in east, very rough or high in west.
Weather
Rain or showers.
Visibility
Moderate or good, occasionally poor.

Outlook for the following 24 hours:

Wind
Southwest 6 to gale 8, occasionally severe gale 9 at first, decreasing 5 at times later.
Sea state
Rough or very rough, occasionally high in west, but becoming moderate later in Lyme Bay.
Weather
Rain or squally showers.
Visibility
Moderate or good, occasionally poor.

Lands End to St Davids Head including the Bristol Channel (9)

Strong winds are forecast

24 hour forecast:

Wind
West or southwest 6 to gale 8, occasionally severe gale 9 at first, decreasing 5 at times later.
Sea state
Moderate at times in Bristol Channel, otherwise rough or very rough, occasionally high in west.
Weather
Rain or showers.
Visibility
Moderate or good, occasionally poor.

Outlook for the following 24 hours:

Wind
Southwest 6 to gale 8, occasionally severe gale 9 at first, then decreasing 5 at times.
Sea state
Moderate at times in Bristol Channel, otherwise rough or very rough, but occasionally high at first in west.
Weather
Rain or squally showers.
Visibility
Moderate or good, occasionally poor.

St Davids Head to Great Orme Head, including St Georges Channel (10)

Strong winds are forecast

24 hour forecast:

Wind
West 6 to gale 8, occasionally severe gale 9 for a time, then backing southwest 5 to 7 later.
Sea state
Moderate at times in north, otherwise rough or very rough.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Outlook for the following 24 hours:

Wind
West or southwest 5 to 7, occasionally gale 8 at first, then decreasing 3 or 4 for a time.
Sea state
Moderate at times in north, otherwise rough or very rough.
Weather
Rain or squally showers.
Visibility
Moderate or good, occasionally poor.

Great Orme Head to the Mull of Galloway (11)

Strong winds are forecast

24 hour forecast:

Wind
West or southwest 6 to gale 8, decreasing 4 or 5 later.
Sea state
Moderate or rough, occasionally very rough for a time.
Weather
Showers.
Visibility
Good, occasionally moderate.

Outlook for the following 24 hours:

Wind
West or southwest, backing south later, 4 to 6.
Sea state
Moderate or rough becoming slight or moderate.
Weather
Rain or squally showers.
Visibility
Good, occasionally poor.

Isle of Man (12)

Strong winds are forecast

24 hour forecast:

Wind
West or southwest 6 to gale 8, decreasing 4 or 5 later.
Sea state
Moderate or rough, occasionally very rough in south, becoming slight or moderate later.
Weather
Showers, then rain later.
Visibility
Good, occasionally moderate later.

Outlook for the following 24 hours:

Wind
West or southwest, backing south later, 4 to 6.
Sea state
Slight or moderate.
Weather
Rain then showers.
Visibility
Good, occasionally moderate.

Lough Foyle to Carlingford Lough (13)

Strong winds are forecast

24 hour forecast:

Wind
Westerly or southwesterly 6 to gale 8, occasionally severe gale 9 for a time in north, then decreasing 4 or 5 later.
Sea state
Moderate or rough, becoming very rough for a time in far north.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Outlook for the following 24 hours:

Wind
West or southwest 4 to 6, backing south 3 to 5 later.
Sea state
Moderate or rough, becoming slight or moderate later.
Weather
Rain or squally showers.
Visibility
Good, occasionally poor.

Mull of Galloway to Mull of Kintyre including the Firth of Clyde and North Channel (14)

Strong winds are forecast

24 hour forecast:

Wind
Westerly or southwesterly 6 to gale 8, occasionally severe gale 9 for a time later, then decreasing 3 to 5 later.
Sea state
Slight or moderate in Firth of Clyde, elsewhere mainly moderate or rough, but becoming very rough for a time near the Mull of Kintyre.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Outlook for the following 24 hours:

Wind
Westerly 3 to 5, occasionally 6 at first, then backing southerly later.
Sea state
Moderate or rough becoming slight or moderate.
Weather
Rain or squally showers.
Visibility
Good, occasionally poor.

Mull of Kintyre to Ardnamurchan Point (15)

Strong winds are forecast

24 hour forecast:

Wind
Cyclonic at first in north, otherwise westerly veering northwesterly, 6 to gale 8, occasionally severe gale 9 in south, decreasing 4 later.
Sea state
Mainly rough or very rough, but moderate in shelter.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Outlook for the following 24 hours:

Wind
West or northwest 4 to 6, occasionally 3 at first, then backing southwest later.
Sea state
Moderate or rough, occasionally very rough at first near Tiree.
Weather
Rain or squally showers.
Visibility
Moderate, occasionally poor.

The Minch (16)

Strong winds are forecast

24 hour forecast:

Wind
Cyclonic 3 at first in far south, otherwise northerly backing westerly or northwesterly, 4 to 6.
Sea state
Moderate or rough in far south and far north, otherwise slight or moderate.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Outlook for the following 24 hours:

Wind
West 4 to 6 backing southwest 6 to gale 8.
Sea state
Moderate or rough in far south and far north, otherwise slight or moderate.
Weather
Rain or squally showers.
Visibility
Good, occasionally poor.

Ardnamurchan Point to Cape Wrath (17)

Strong winds are forecast

24 hour forecast:

Wind
Cyclonic 3 at first in far south, otherwise northerly backing westerly or northwesterly, 4 to 6.
Sea state
Rough or very rough.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

Outlook for the following 24 hours:

Wind
Westerly 4 to 6 backing southwesterly 6 to gale 8, occasionally severe gale 9 in north.
Sea state
Rough or very rough.
Weather
Rain or squally showers.
Visibility
Good, occasionally poor.

Shetland Isles (18)

Strong winds are forecast

24 hour forecast:

Wind
Southeasterly 6 to gale 8, occasionally 5 in south, then veering southerly 4 to 6 later.
Sea state
Rough or very rough, occasionally high at first in northeast, becoming moderate or rough later.
Weather
Rain or showers.
Visibility
Good, occasionally poor.

For Coastal areas up to 60 nautical miles from Lerwick, Shetland (18)

Valid Saturday 14 Dec 2019 at 0000 UTC until Saturday 14 Dec 2019 at 1200 UTC

General situation

An area of low pressure will move northwest between Shetland and Orkney overnight and continue northwards on Saturday.

Forecast

Wind
Southeasterly 6 to gale 8, perhaps severe gale 9 for a time in far east, veering southerly or southwesterly 4 to 6 in south and west.
Sea state
High in northeast, otherwise very rough, occasionally rough later.
Weather
Rain or showers.
Visibility
Good, occasionally moderate or poor.

Outlook for 12 Hours from 1200 UTC on Saturday 14 Dec until 0000 UTC on Sunday 15 Dec

Wind
Southeasterly 6 to gale 8 at first in northeast, otherwise southerly or southwesterly 4 to 6.
Sea state
High at first in northeast, otherwise rough or very rough.
Weather
Rain or showers.
Visibility
Good, occasionally moderate or poor.

Channel Islands (19)

Strong winds are forecast

24 hour forecast:

Wind
West or northwest 7 or gale 8, occasionally severe gale 9 with gusts to 60kt at first, backing west or southwest 6 or 7 around dawn, occasionally gale 8 with gusts to 55kt, then south or southwest by dusk, locally 5, veering west towards midnight.
Sea state
Rough to very rough, increasing high at time until dawn, decreasing moderate to rather rough in the south at times later.
Weather
Squally showers with a risk of hail, turning to a period of rain for a time in the evening.
Visibility
Moderate to good, occasionally poor.

Outlook for the following 24 hours:

Wind
Westerly 6 to gale 8 with gusts to 50kt, backing southerly or southwesterly by dawn, locally 5 mainly in the south, decreasing generally 4 to 6 later.
Sea state
Rough to very rough, decreasing moderate to rather rough in the south by midday with a moderate swell.
Weather
Showers, locally heavy with a risk of hail and thunder.
Visibility
Moderate to good, occasionally poor.

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 around the British Isles are divided into 19 areas which extend up to 12 nautical miles offshore.

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

Strong coastal winds (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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