Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 241200UTC, developing low moving rather quickly northeast, expected 70 north 07 west 966 by 251200UTC. High 50 north 25 west 1037 expected 48 north 26 west 1035 by same time

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
North 4 or 5, occasionally 6 at first.
Sea state
Moderate.
Weather
Showers.
Visibility
Good.

Shannon

Wind
North backing northwest 4 or 5, occasionally 6 later.
Sea state
Moderate, occasionally rough later in north.
Weather
Showers.
Visibility
Good.

Rockall

Wind
Northwest 3 to 5, backing west or southwest 5 to 7, occasionally gale 8 later.
Sea state
Moderate or rough, becoming very rough or high later in north.
Weather
Occasional rain.
Visibility
Good, occasionally poor later.

Bailey

Wind
West or southwest 4 to 6, increasing 7 to severe gale 9.
Sea state
Moderate or rough, becoming very rough or high.
Weather
Occasional rain.
Visibility
Moderate or good, occasionally poor.

Faeroes

Wind
West or southwest 6 to gale 8, occasionally severe gale 9 later.
Sea state
Moderate or rough, becoming very rough, occasionally high later.
Weather
Occasional rain.
Visibility
Moderate or good, occasionally poor.

Southeast Iceland

High seas storm warning
Issued:

At 241200UTC, developing low moving rather quickly northeast, expected 70 north 07 west 966 by 251200UTC. Westerly winds are expected to reach storm force 10 or violent storm force 11 across the far north of West Northern Section from 242200UTC until 250800UTC. These westerly winds will also reach storm force 10 across the far north of East Central Section from 250100UTC until 251400UTC. Southwesterly veering northwesterly winds are expected to reach storm force 10 across parts of Southeast Iceland from 240300UTC onwards. Northerly or northwesterly winds will reach storm force 10 or violent storm force 11 across parts of Denmark Strait from 242100 until 251300UTC. Northerly or northwesterly winds will also develop in the far northwest of north Iceland from 250300UTC, steadily spreading south and east across a wide swathe of the area by 252000UTC.

Wind
Southwesterly veering northwesterly 7 to severe gale 9, occasionally storm 10 later.
Sea state
Rough, becoming very rough or high.
Weather
Occasional rain.
Visibility
Moderate or good, occasionally poor.

East Northern Section

High seas storm warning
Issued:

At 241200UTC, developing low moving rather quickly northeast, expected 70 north 07 west 966 by 251200UTC. Westerly winds are expected to reach storm force 10 or violent storm force 11 across the far north of West Northern Section from 242200UTC until 250800UTC. These westerly winds will also reach storm force 10 across the far north of East Central Section from 250100UTC until 251400UTC. Southwesterly veering northwesterly winds are expected to reach storm force 10 across parts of Southeast Iceland from 240300UTC onwards. Northerly or northwesterly winds will reach storm force 10 or violent storm force 11 across parts of Denmark Strait from 242100 until 251300UTC. Northerly or northwesterly winds will also develop in the far northwest of north Iceland from 250300UTC, steadily spreading south and east across a wide swathe of the area by 252000UTC.

In north

Wind
Southwesterly veering northwesterly 7 to severe gale 9, occasionally storm 10 in north.
Sea state
Very rough or high, occasionally very high in northeast.
Weather
Rain at first.
Visibility
Moderate or poor.

In south

Wind
Southwesterly veering northwesterly 6 to gale 8, occasionally severe gale 9 in northeast.
Sea state
Rough or very rough, becoming high later in far northeast.
Weather
Occasional drizzle.
Visibility
Moderate or good, occasionally poor in northeast.

West Northern Section

High seas storm warning
Issued:

At 241200UTC, developing low moving rather quickly northeast, expected 70 north 07 west 966 by 251200UTC. Westerly winds are expected to reach storm force 10 or violent storm force 11 across the far north of West Northern Section from 242200UTC until 250800UTC. These westerly winds will also reach storm force 10 across the far north of East Central Section from 250100UTC until 251400UTC. Southwesterly veering northwesterly winds are expected to reach storm force 10 across parts of Southeast Iceland from 240300UTC onwards. Northerly or northwesterly winds will reach storm force 10 or violent storm force 11 across parts of Denmark Strait from 242100 until 251300UTC. Northerly or northwesterly winds will also develop in the far northwest of north Iceland from 250300UTC, steadily spreading south and east across a wide swathe of the area by 252000UTC.

In north

Wind
Westerly or northwesterly, becoming cyclonic, 7 to severe gale 9, occasionally storm 10 at first in north, decreasing 4 to 6 later.
Sea state
Very rough or high, becoming rough later in west.
Weather
Fog patches later in far south.
Visibility
Moderate or good, occasionally very poor later in far south.

In south

Wind
Westerly or southwesterly 5 to 7, occasionally gale 8 at first in north and east.
Sea state
Rough, occasionally very rough in northeast.
Weather
Occasional drizzle and fog patches.
Visibility
Moderate or good, occasionally very poor later in far south.

East Central Section

In north

Wind
Westerly or northwesterly 4 to 6, occasionally 7 later in northeast.
Sea state
Moderate or rough.
Weather
Fair.
Visibility
Good, occasionally moderate.

In south

Wind
Northerly or northeasterly 4 or 5, occasionally 6 at first, becoming variable 2 to 4 in west.
Sea state
Moderate.
Weather
Fair.
Visibility
Good.

West Central Section

In north

Wind
Southerly or southwesterly 4 to 6, occasionally 7 later in far west.
Sea state
Moderate or rough.
Weather
Occasional drizzle and fog patches in far northwest.
Visibility
Moderate or good, occasionally very poor in far northwest.

In south

Wind
Southerly or southeasterly 4 to 6, occasionally 7 later in far west.
Sea state
Moderate or rough, occasionally very rough later in far southwest.
Weather
Showers in far west.
Visibility
Good.

Denmark Strait

High seas storm warning
Issued:

At 241200UTC, developing low moving rather quickly northeast, expected 70 north 07 west 966 by 251200UTC. Westerly winds are expected to reach storm force 10 or violent storm force 11 across the far north of West Northern Section from 242200UTC until 250800UTC. These westerly winds will also reach storm force 10 across the far north of East Central Section from 250100UTC until 251400UTC. Southwesterly veering northwesterly winds are expected to reach storm force 10 across parts of Southeast Iceland from 240300UTC onwards. Northerly or northwesterly winds will reach storm force 10 or violent storm force 11 across parts of Denmark Strait from 242100 until 251300UTC. Northerly or northwesterly winds will also develop in the far northwest of north Iceland from 250300UTC, steadily spreading south and east across a wide swathe of the area by 252000UTC.

Wind
Cyclonic 6 to gale 8, becoming northwesterly or northerly severe gale 9 to violent storm 11 at times.
Sea state
Rough or very rough, becoming high at times.
Weather
Rain at times, turning to sleet and snow in far east, fair later.
Visibility
Moderate or poor, occasionally very poor in far east, becoming mainly good later.

North Iceland

High seas storm warning
Issued:

At 241200UTC, developing low moving rather quickly northeast, expected 70 north 07 west 966 by 251200UTC. Westerly winds are expected to reach storm force 10 or violent storm force 11 across the far north of West Northern Section from 242200UTC until 250800UTC. These westerly winds will also reach storm force 10 across the far north of East Central Section from 250100UTC until 251400UTC. Southwesterly veering northwesterly winds are expected to reach storm force 10 across parts of Southeast Iceland from 240300UTC onwards. Northerly or northwesterly winds will reach storm force 10 or violent storm force 11 across parts of Denmark Strait from 242100 until 251300UTC. Northerly or northwesterly winds will also develop in the far northwest of north Iceland from 250300UTC, steadily spreading south and east across a wide swathe of the area by 252000UTC.

In northwest

Wind
Cyclonic 5 to 7, becoming northerly or northwesterly severe gale 9 to violent storm 11.
Sea state
Rough or very rough, becoming high or very high.
Weather
Rain at times, turning to sleet or snow.
Visibility
Moderate or poor, occasionally very poor. Light or moderate icing developing in northwest, with temperatures ms02 to ms04.

In southeast

Wind
Southerly or southwesterly, becoming cyclonic, 7 to severe gale 9, then becoming northwesterly severe gale 9 to violent storm 11 later in southwest.
Sea state
Rough or very rough, becoming high or very high later.
Weather
Rain at times.
Visibility
Moderate or poor, occasionally good at first.

Norwegian Basin

Wind
Westerly 4 to 6, backing southwesterly 7 to severe gale 9.
Sea state
Moderate or rough, becoming very rough, occasionally high later in west.
Weather
Fair at first, the rain at times.
Visibility
Good, becoming moderate or poor.

Outlook for following 24 hours

Violent storms expected in north Iceland. Storms expected in Southeast Iceland. Severe gales expected in Faeroes, Bailey and Norwegian Basin. Gales expected in Rockall, East Northern Section, West Central Section and Denmark Strait.

Unscheduled storm warnings are broadcast via Safetynet and in bulletin WONT54 EGRR available via some internet and ftpmail outlets

The high seas forecast information

High seas forecasts are issued twice daily at 0930 and 2130 GMT and cover the next 24 hours and outlooks for the following 24 hours.

The part of the North Atlantic known as Metarea I is divided into twelve sea areas, six of which are also in the Shipping forecast.

The high seas forecast contains a general synopsis and sea-area forecasts containing forecast wind direction and force, weather and visibility for the next 24 hours with an outlook for the following 24 hours.

Marine forecasts disclaimer

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.

Caution: The internet is not part of the Maritime Safety Information system and should never be relied upon as the only means to obtain the latest forecast and warning information. Access to the service may be interrupted or delayed from time to time, updates may also be delayed.

Please refer to GMDSS services, INMARSAT SafetyNET or international NAVTEX for the latest information. When using these web pages, always check that the page on your screen is not from your cache. Use the Refresh or Reload button if in any doubt.