Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 161200UTC low 52 north 27 west 988 expected 57 north 15 west 978 by 171200UTC. Low 56 north 39 west 1003 losing its identity. New low expected 50 north 27 west by same time

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
Southwesterly 6 to gale 8, decreasing 4 to 6.
Sea state
Rough, occasionally very rough in west.
Weather
Occasional rain.
Visibility
Moderate or good, occasionally poor.

Shannon

Wind
Cyclonic 7 to severe gale 9, becoming southwest 5 to 7 later.
Sea state
Rough or very rough, occasionally high in north.
Weather
Rain at first.
Visibility
Moderate or poor, becoming good.

Rockall

Wind
Cyclonic 7 to severe gale 9, perhaps storm 10 later.
Sea state
Moderate or rough becoming very rough or high, occasional very high later.
Weather
Rain.
Visibility
Moderate or good, occasionally poor.

Bailey

Wind
East 4 to 6, becoming cyclonic 7 to severe gale 9.
Sea state
Moderate or rough becoming very rough or high later.
Weather
Showers, rain later.
Visibility
Moderate or good, occasionally poor later.

Faeroes

Wind
East or northeast 4 to 6, increasing 6 to gale 8 later, perhaps severe gale 9 later.
Sea state
Moderate or rough, becoming rough or very rough.
Weather
Showers, rain later.
Visibility
Good, occasionally poor.

Southeast Iceland

Wind
East or northeast 4 to 6, increasing 6 to gale 8 later, perhaps severe gale 9 later.
Sea state
Moderate or rough, becoming rough or very rough.
Weather
Showers, rain later.
Visibility
Good, occasionally poor.

East Northern Section

High seas storm warning
Issued:

At 161200UTC low 52 north 27 west 988 expected 57 north 15 west 978 by 171200UTC. Winds are expected to reach storm force 10 between 50 to 150 miles of the centre in the southern semicircle and in the north quadrant between 162200UTC and 171300UTC. Winds are then expected to also just reach violent storm force 11 between 50 and 100 miles of the centre in the southern quadrant between 170100UTC and 170800UTC.

In north

Wind
Easterly or northeasterly 4 to 6, increasing 7 to severe gale 9 later.
Sea state
Moderate or rough becoming rough or very rough in southeast.
Weather
Occasional rain or showers.
Visibility
Good occasionally moderate.

In south

Wind
Gale 8 to storm 10, decreasing 6 to gale 8 later.
Sea state
Moderate or rough becoming very rough or high.
Weather
Rain.
Visibility
Moderate or poor, occasionally good later.

West Northern Section

In far northwest of area

Wind
Northeasterly 6 to gale 8, decreasing 5 or 6 later.
Sea state
Very rough becoming moderate or rough.
Weather
Occasional rain or drizzle.
Visibility
Moderate or good, occasionally poor.

In rest of area

Wind
Easterly or northeasterly 4 to 6.
Sea state
Moderate or rough, occasionally very rough later in east.
Weather
Rain or showers.
Visibility
Moderate or good.

East Central Section

High seas storm warning
Issued:

At 161200UTC low 52 north 27 west 988 expected 57 north 15 west 978 by 171200UTC. Winds are expected to reach storm force 10 between 50 to 150 miles of the centre in the southern semicircle and in the north quadrant between 162200UTC and 171300UTC. Winds are then expected to also just reach violent storm force 11 between 50 and 100 miles of the centre in the southern quadrant between 170100UTC and 170800UTC.

In north

Wind
Cyclonic gale 8 to storm 10, occasionally violent storm 11 at first in east, decreasing 6 to gale 8 later.
Sea state
Rough or very rough, becoming very rough or high in east.
Weather
Rain or showers.
Visibility
Moderate or good, occasionally poor.

In south

Wind
Westerly or southwesterly 6 to gale 8, decreasing 4 to 6 in south.
Sea state
Very rough becoming rough.
Weather
Thundery rain or showers.
Visibility
Good occasionally poor.

West Central Section

Wind
Variable 2 to 4 in far north, otherwise westerly or northwesterly 4 to 6, occasionally 7 or gale 8 later in east.
Sea state
Moderate or rough.
Weather
Occasional rain or showers, thundery later in west.
Visibility
Good occasionally poor.

Denmark Strait

In area north of 70 north

Wind
Variable 2 to 4 becoming northerly 4 to 6 later.
Sea state
Moderate or rough.
Weather
Mainly fair, occasional sleet or snow later.
Visibility
Good, becoming moderate or good occasionally very poor later. Light icing in far north, with temperatures ms02 to ms03.

In rest of area

Wind
Northeasterly 5 to 7, occasionally gale 8 at first in west.
Sea state
Moderate or rough, but very rough at first in far west.
Weather
Mainly fair.
Visibility
Moderate or good.

North Iceland

In north

Wind
Northerly or northeasterly 5 to 7, becoming cyclonic 6 to gale 8 later in west.
Sea state
Rough.
Weather
Snow showers.
Visibility
Moderate or good, occasionally very poor.

In south

Wind
Northerly or northeasterly 4 to 6, increasing 7 later in far south.
Sea state
Rough.
Weather
Showers, becoming wintry later in north.
Visibility
Good occasionally poor.

Norwegian Basin

Wind
Northerly 5 to 7, veering easterly 4 to 6 later.
Sea state
Moderate or rough.
Weather
Showers.
Visibility
Good occasionally poor.

Outlook for following 24 hours

Severe gales expected in East Northern Section. Gales are expected in East Central Section and north Iceland.

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.