Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 171200UTC, low 56 north 32 west 990 expected 59 north 29 west 980 by 181200UTC. Low 48 north 40 west 981 expected 48 north 29 west 989 by same time. Low 47 north 24 west 990 expected 57 north 15 west 984 by that time. at 171200UTC, high 71 north 28 west 1040 slow-moving, declining 1037 by 181200UTC. Low 56 north 09 west 1008 losing its identity

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
South 4 to 6.
Sea state
Moderate, becoming rough in west.
Weather
Occasional rain, fog patches later.
Visibility
Moderate or good, occasionally very poor later.

Shannon

Wind
Southeast veering south 5 to 7, occasionally gale 8 later.
Sea state
Moderate or rough.
Weather
Occasional rain.
Visibility
Good, occasionally poor.

Rockall

Wind
Southeast veering south 5 to 7, occasionally gale 8 later.
Sea state
Moderate or rough.
Weather
Occasional rain.
Visibility
Good, occasionally poor.

Bailey

Wind
Southeast 4 to 6, occasionally 7 later.
Sea state
Moderate or rough.
Weather
Occasional rain.
Visibility
Good, occasionally poor.

Faeroes

Wind
Southeast 5 to 7, occasionally gale 8 later.
Sea state
Moderate or rough.
Weather
Occasional rain.
Visibility
Good, occasionally poor.

Southeast Iceland

Wind
Easterly or southeasterly 6 to gale 8, occasionally severe gale 9 at first in west.
Sea state
Rough, occasionally very rough.
Weather
Rain at times.
Visibility
Moderate or poor.

East Northern Section

In far north near Iceland

Wind
Northeasterly 7 to severe gale 9, veering southeasterly 4 to 6 for a time in east.
Sea state
Rough or very rough, but high in far west.
Weather
Rain at times.
Visibility
Moderate or poor.

In rest of area

Wind
Cyclonic 5 to 7.
Sea state
Rough, but very rough in far west.
Weather
Rain at times.
Visibility
Moderate or good, occasionally poor.

West Northern Section

High seas storm warning
Issued:

At 171200UTC, low 56 north 32 west 990 expected 59 north 29 west 980 by 181200UTC. Northeasterly winds will reach storm force 10 to the west of 23 west in Denmark Strait and in the northwestern half of West Northern Section throughout the period. The wind increasing violent storm force 11 at times from 180400UTC onwards.

In northwest

Wind
Northerly or northeasterly severe gale 9 to violent storm 11.
Sea state
High or very high.
Weather
Sleet or snow at times.
Visibility
Poor or very poor.

In southeast

Wind
Cyclonic 7 to severe gale 9.
Sea state
Very rough or high.
Weather
Rain at times.
Visibility
Moderate or poor.

East Central Section

Wind
Cyclonic becoming southwesterly 6 to gale 8, then becoming cyclonic 5 to 7 later in west.
Sea state
Rough, occasionally very rough in far west.
Weather
Rain or showers.
Visibility
Moderate or good, occasionally poor.

West Central Section

Wind
Cyclonic 6 to gale 8, occasionally severe gale 9 in far northwest, becoming northerly or northwesterly later.
Sea state
Rough or very rough, becoming high in far northwest.
Weather
Fog patches at first in north, otherwise rain or showers.
Visibility
Moderate or good, occasionally very poor at first in north.

Denmark Strait

High seas storm warning
Issued:

At 171200UTC, low 56 north 32 west 990 expected 59 north 29 west 980 by 181200UTC. Northeasterly winds will reach storm force 10 to the west of 23 west in Denmark Strait and in the northwestern half of West Northern Section throughout the period. The wind increasing violent storm force 11 at times from 180400UTC onwards.

In south

Wind
Northeasterly severe gale gale 8 to storm 10, occasionally violent storm 11 in west.
Sea state
Very rough or high, occasionally very high in west.
Weather
Sleet or snow at times.
Visibility
Moderate or poor, occasionally very poor in west. Slight icing at times near to greenland, with temperatures ms02 or ms03.

In north

Wind
Northerly 4 to 6, occasionally 7 in south.
Sea state
Moderate or rough.
Weather
Snow at first.
Visibility
Good, occasionally poor at first. Slight icing at times in far south, with temperatures ms03 or ms04.

North Iceland

In south

Wind
Easterly or northeasterly 6 to gale 8.
Sea state
Rough, occasionally very rough in south and west.
Weather
Occasional rain or sleet.
Visibility
Moderate or good, occasionally poor.

In north

Wind
Northerly or northeasterly 4 to 6.
Sea state
Moderate or rough.
Weather
Occasional snow.
Visibility
Good, occasionally poor.

Norwegian Basin

Wind
Northwesterly 5 or 6 at first in far northeast, otherwise variable 2 to 4, becoming easterly or southeasterly 5 to 7, occasionally gale 8 later in southwest.
Sea state
Moderate or rough.
Weather
Showers, rain later in southwest.
Visibility
Good, occasionally moderate later in southwest.

Outlook for following 24 hours

Storms expected in Southeast Iceland, West Central Section, both northern sections and Denmark Strait, with violent storms likely in West Northern Section. Severe gales expected in north Iceland. Gales also expected in Bailey, Faeroes, East Central Section and Norwegian Basin.

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.