Coast and Sea

High seas forecast and storm warnings


The general synopsis for UK

At 271200UTC, low 57 north 25 west 987 expected 60 north 16 west 989 by 281200UTC. New low expected 48 north 38 west 1006 by same time. Low 72 north 11 west 1003 losing its identity by that time.

Issued at: .

For the period to .

High seas forecast and storm warnings map


Sole

Wind
Southwesterly veering westerly 4 to 6.
Sea state
Moderate or rough, occasionally very rough in west.
Weather
Occasional rain.
Visibility
Good, occasionally poor.

Shannon

Wind
Southwest 5 to 7.
Sea state
Moderate or rough becoming very rough.
Weather
Showers.
Visibility
Good.

Rockall

Wind
South or southwest 6 to gale 8.
Sea state
Moderate or rough becoming very rough or high.
Weather
Occasional rain.
Visibility
Good, occasionally poor.

Bailey

Wind
Cyclonic 5 or 6, occasionally 7 later.
Sea state
Moderate or rough becoming rough or very rough.
Weather
Rain.
Visibility
Good, occasionally poor.

Faeroes

Wind
Cyclonic becoming south 4 to 6, occasionally 7 later.
Sea state
Moderate, becoming rough or very rough later.
Weather
Occasional rain, fog patches.
Visibility
Moderate or good, occasionally very poor.

Southeast Iceland

Wind
Cyclonic 5 to 7, occasionally gale 8 in northwest.
Sea state
Moderate or rough.
Weather
Occasional rain, fog patches.
Visibility
Moderate, occasionally very poor.

East Northern Section

Wind
Cyclonic becoming westerly 5 to 7, occasionally gale 8 in far south, veering northwesterly 4 or 5 later in north.
Sea state
Moderate or rough, becoming very rough or high for a time in far south.
Weather
Rain at times.
Visibility
Moderate or good, occasionally poor.

West Northern Section

In north

Wind
Cyclonic 4 to 6, increasing 7 or gale 8 later in far northwest.
Sea state
Moderate or rough.
Weather
Rain at times.
Visibility
Good, occasionally poor.

In south

Wind
Westerly or northwesterly 5 to 7, occasionally gale 8 at first in far southeast, becoming cyclonic 4 or 5 later.
Sea state
Moderate or rough, occasionally very rough at first in far southeast.
Weather
Showers.
Visibility
Good, occasionally moderate.

East Central Section

Wind
Westerly 5 to 7, occasionally gale 8 in north, backing southwest 4 to 6 later.
Sea state
Rough or very rough, occasionally high at first in far north.
Weather
Rain or showers.
Visibility
Good, occasionally poor in north.

West Central Section

Wind
Westerly or southwesterly 4 to 6, occasionally 7 at first in northeast, becoming cyclonic 5 to 7 later in south.
Sea state
Moderate or rough, occasionally very rough at first in east.
Weather
Rain in south, heavy at times.
Visibility
Moderate or good, occasionally poor in south.

Denmark Strait

Wind
East 4 to 6 backing northeast 6 to gale 8, but variable 3 or 4 in far north.
Sea state
Slight or moderate becoming moderate or rough.
Weather
Occasional rain and fog patches.
Visibility
Moderate or poor, occasionally very poor.

North Iceland

In north

Wind
Cyclonic 3 to 5 becoming variable 2 to 4.
Sea state
Moderate becoming slight.
Weather
Fog patches, but fog banks developing near ice edge.
Visibility
Moderate or poor, occasionally very poor.

In south

Wind
Easterly 4 to 6 becoming cyclonic 5 to 7.
Sea state
Slight or moderate becoming moderate or rough.
Weather
Occasional rain and fog patches.
Visibility
Moderate or good, occasionally very poor.

Norwegian Basin

Wind
Cyclonic becoming south or southwest, 4 to 6.
Sea state
Moderate.
Weather
Showers, thundery at first, fog patches.
Visibility
Moderate or good, occasionally very poor.

Outlook for the following 24 hours

Gales expected in Rockall, West Northern Section, West Central Section, East Central Section and Denmark Strait.

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

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.

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