Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 120000UTC, low 58 north 10 west 965 expected 65 north 05 west 966 by 130000UTC. Low 45 north 63 west 995 expected 50 north 52 west 953 by same time. Low 45 north 29 west 992 expected 47 north 14 west 997 by that time

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
Southwest, becoming cyclonic later, 5 to 7.
Sea state
Rough or very rough.
Weather
Thundery showers.
Visibility
Good, occasionally poor.

Shannon

Wind
Southwest veering northwest 5 to 7.
Sea state
Very rough, occasionally rough later.
Weather
Thundery showers.
Visibility
Good, occasionally poor.

Rockall

Wind
Southwest 6 to gale 8, veering northwest 4 to 6.
Sea state
Rough or very rough, occasionally high at first.
Weather
Showers.
Visibility
Good, occasionally moderate.

Bailey

Wind
Northwest 7 to severe gale 9, decreasing 4 to 6.
Sea state
Very rough or high.
Weather
Rain then showers.
Visibility
Moderate, occasionally poor.

Faeroes

Wind
Cyclonic 6 to gale 8, occasionally severe gale 9 at first.
Sea state
Rough or very rough, becoming very rough or high.
Weather
Rain at times.
Visibility
Moderate, occasionally poor.

Southeast Iceland

High seas storm warning
Issued:

At 120000UTC, low 58 north 10 west 965 expected 65 north 05 west 966 by 130000UTC. Southeasterly winds are expected to reach storm force 10 at times between 02 west and 04 east in Norwegian Basin until 130200UTC, and also reaching violent storm force 11 in the south of this area until 121400UTC. Low 45 north 63 west 995 expected 50 north 52 west 953 by same time. In association with this low, southwesterly winds are expected to reach storm force 10 in the far west of West Central Section after 130600UTC.

Wind
Northerly gale 8 to storm 10, becoming cyclonic 6 to gale 8 later.
Sea state
Very rough or high.
Weather
Rain or sleet.
Visibility
Moderate or poor.

East Northern Section

Wind
Northerly or northwesterly 6 to gale 8, backing westerly or southwesterly 3 to 5 later in southwest.
Sea state
Rough or very rough.
Weather
.
Visibility
Wintry showers, fair later in southwest. Good, occasionally poor.

West Northern Section

In east

Wind
Northerly 5 to 7, becoming variable 2 to 4, then becoming southeasterly 6 to gale 8 later in southwest.
Sea state
Rough or very rough, becoming moderate or rough.
Weather
Wintry showers, rain later in far southwest.
Visibility
Good, occasionally poor.

In west

Wind
Variable 2 to 4, becoming easterly or southeasterly 4 to 6, then increasing 7 to severe gale 9 later in south.
Sea state
Moderate or rough, becoming very rough later in southwest.
Weather
Rain later in south.
Visibility
Good, becoming moderate or poor later in south.

East Central Section

In east

Wind
Cyclonic, becoming westerly or northwesterly, 5 to 7, occasionally gale 8 later in south.
Sea state
Rough or very rough.
Weather
Thundery showers, fair later.
Visibility
Good, occasionally poor at first.

In west

Wind
Northerly backing northwesterly 5 to 7, occasionally gale 8 at first in south, becoming variable 2 to 4 later.
Sea state
Rough or very rough.
Weather
Showers at first.
Visibility
Good.

West Central Section

High seas storm warning
Issued:

At 120000UTC, low 58 north 10 west 965 expected 65 north 05 west 966 by 130000UTC. Southeasterly winds are expected to reach storm force 10 at times between 02 west and 04 east in Norwegian Basin until 130200UTC, and also reaching violent storm force 11 in the south of this area until 121400UTC. Low 45 north 63 west 995 expected 50 north 52 west 953 by same time. In association with this low, southwesterly winds are expected to reach storm force 10 in the far west of West Central Section after 130600UTC.

In east

Wind
Northwesterly 5 to 7, becoming variable 2 to 4, then southerly 6 to gale 8 later.
Sea state
Rough or very rough.
Weather
Rain later.
Visibility
Good, becoming moderate or poor later.

In west

Wind
Variable 2 to 4, becoming southerly 5 to 7, then southwesterly 7 to severe gale 9 later, occasionally storm 10 in the west.
Sea state
Rough or very rough, becoming high later in west.
Weather
Fair at first, then rain, showers later.
Visibility
Good, becoming moderate or poor.

Denmark Strait

In west

Wind
Westerly or northwesterly 3 to 5, becoming variable 2 to 4.
Sea state
Slight or moderate.
Weather
Fair.
Visibility
Good.

In east

Wind
Northerly 6 to gale 8, occasionally severe gale 9 at first in east.
Sea state
Backing northwesterly 4 to 6 later.
Weather
Moderate or rough, occasionally very rough in east.
Visibility
Occasional snow in east. Good, occasionally poor in east. Light to moderate icing, occasionally severe near ice edge in east, with temperatures ms03 to ms06.

North Iceland

In northwest

Wind
Northerly or northeasterly 7 to severe gale 9.
Sea state
Very rough or high.
Weather
Sleet or snow at times.
Visibility
Moderate or poor, occasionally very poor. Light to moderate, occasionally severe, icing, with temperatures ms04 to ms08.

In southeast

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

Norwegian Basin

High seas storm warning
Issued:

At 120000UTC, low 58 north 10 west 965 expected 65 north 05 west 966 by 130000UTC. Southeasterly winds are expected to reach storm force 10 at times between 02 west and 04 east in Norwegian Basin until 130200UTC, and also reaching violent storm force 11 in the south of this area until 121400UTC. Low 45 north 63 west 995 expected 50 north 52 west 953 by same time. In association with this low, southwesterly winds are expected to reach storm force 10 in the far west of West Central Section after 130600UTC.

Wind
Southeasterly gale 8 to storm 10, occasionally violent storm 11 at first in south, becoming southerly or southwesterly 7 to severe gale 9 later.
Sea state
High or very high, becoming very rough or high later, but rough or very rough in far east.
Weather
Rain at times.
Visibility
Moderate or poor, occasionally good in lee shelter and later.

Outlook for following 24 hours

Violent storms expected in West Central Section. Gales or severe gales expected in all other areas except Bailey, Faeroes and Southeast 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.