Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 050000UTC, low 47 north 03 east 1009 expected 50 north 15 east 1004 by 060000UTC. Low 62 north 35 west 1022 expected 61 north 21 west 1009 by same time. High 44 north 31 west 1031 dissipating by that time. at 050000UTC, new high expected 42 north 49 west 1029 by 060000UTC.

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
North or northwest 4 to 5, occasionally 6 at first.
Sea state
Moderate, occasionally rough at first.
Weather
Showers, perhaps thundery.
Visibility
Good, occasionally poor.

Shannon

Wind
North or northwest 3 to 5.
Sea state
Mainly moderate.
Weather
Showers.
Visibility
Good.

Rockall

Wind
North or northeast 4 to 6, becoming variable 2 to 4.
Sea state
Slight or moderate.
Weather
Showers, occasional rain later.
Visibility
Moderate or good, occasionally poor later.

Bailey

Wind
North or northeast 4 to 6, becoming variable 2 to 4, then becoming cyclonic 5 or 6 later.
Sea state
Slight or moderate, occasionally rough in north.
Weather
Showers, occasional rain later.
Visibility
Moderate or good, occasionally poor later.

Faeroes

Wind
North or northwest 4 to 6, becoming cyclonic 3 or 4 later.
Sea state
Moderate or rough.
Weather
Rain or wintry showers.
Visibility
Good, occasionally very poor.

Southeast Iceland

Wind
Northerly or northwesterly becoming cyclonic, 4 to 6, occasionally 7 later, perhaps gale 8 later.
Sea state
Moderate or rough.
Weather
Rain or wintry showers.
Visibility
Good, occasionally very poor.

East Northern Section

In north

Wind
Cyclonic 4 to 6, but variable 3 or 4 at first in east, increasing 6 to gale 8, occasionally severe gale force 9 later in south.
Sea state
Slight or moderate, becoming moderate or rough later.
Weather
Mainly fair at first in east, otherwise occasional rain or drizzle, then sleet and snow showers in north.
Visibility
Moderate or good, occasionally very poor.

In south

Wind
Variable 3 or 4, becoming westerly or northwesterly 4 to 6 later.
Sea state
Slight or moderate, occasionally rough later in north.
Weather
Mainly fair, then occasional rain or drizzle in north.
Visibility
Moderate or good, occasionally poor in north.

West Northern Section

In north

Wind
Cyclonic 4 to 6, becoming northeasterly 6 to gale 8, decreasing 4 to 6 later.
Sea state
Slight or moderate, becoming moderate or rough.
Weather
Rain, sleet or snow at times, becoming mainly fair in west and snow showers later in east.
Visibility
Good, becoming moderate or good occasionally very poor later in east. Occasionally light icing until later in northwest.

In southeast

Wind
Variable 2 to 4, becoming cyclonic 5 or 6 in north, then northerly or northeasterly 5 or 6 later elsewhere.
Sea state
Slight, becoming moderate or rough later in north.
Weather
Occasional rain or drizzle.
Visibility
Moderate or good, occasionally poor.

In southwest

Wind
Easterly or southeasterly 4 to 6, but variable 3 or 4 at first in north, occasionally 7 later in north.
Sea state
Slight or moderate becoming moderate or rough.
Weather
Rain or drizzle at times, fog patches at first.
Visibility
Moderate or good, occasionally very poor at first.

East Central Section

Wind
Northerly or northwesterly 3 or 4, occasionally 5 at first in east, increasing 5 or 6 later in west.
Sea state
Moderate in east, slight or moderate in west.
Weather
Showers, then rain or drizzle later in west.
Visibility
Good, occasionally moderate, becoming moderate or poor in west.

West Central Section

In eastern half of the area

Wind
Variable 2 to 4, becoming cyclonic 3 to 5, occasionally 6 later in north.
Sea state
Slight or moderate.
Weather
Showers, then rain or drizzle, perhaps thundery later in south.
Visibility
Moderate or good, occasionally poor.

In western half of the area

Wind
Westerly or northwesterly, but southerly or southeasterly at first in east, 4 to 6, becoming variable 3 or 4 later in northwest, moderate or rough, but slight or moderate at first in east.
Sea state
Rain for a time, fog patches for a time in north, becoming mainly fair later.
Weather
Moderate or good, becoming moderate or poor for a time, occasionally very poor in north.

Denmark Strait

In area that lies both north of 67 north and west of 24 west

Wind
Variable 2 to 4.
Sea state
Smooth or slight.
Weather
Mainly fair.
Visibility
Good.

In the rest of the area

Wind
Northerly or northeasterly 4 to 6, increasing 7 or gale 8 for a time in east, becoming variable 3 or 4 later in west.
Sea state
Slight or moderate until later in west, otherwise moderate or rough.
Weather
Snow showers, becoming mainly fair in west.
Visibility
Good, occasionally very poor. Light or moderate icing until later to the north of 67 north in the east and west of 31 west in the west, with temperatures ms02 to ms05.

North Iceland

Wind
Northerly or northwesterly 5 to 7, occasionally gale 8 at first in west.
Sea state
Moderate or rough.
Weather
Sleet or snow showers.
Visibility
Moderate or good, occasionally very poor. Light or moderate icing in northwest, with temperatures ms03 to ms06.

Norwegian Basin

Wind
Westerly or northwesterly 4 to 6, backing westerly or southwesterly 3 to 5 for a time in south, becoming variable 2 or 3 later in north.
Sea state
Moderate or rough, becoming mainly moderate later.
Weather
Sleet or snow showers, perhaps thundery.
Visibility
Good, occasionally very poor.

Outlook for following 24 hours

Severe gales expected in East Northern Section. Gales expected in Southeast Iceland and West Northern Section.

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.