Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

New low expected 52 north 16 west 976 by 111200UTC. Low 56 north 28 west 987 expected 58 north 16 west 973 by same time. Low 70 north 00 east 1006 expected 72 north 06 west 1001 by that time

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
South or southwest 6 to gale 8, occasionally 5 at first and severe gale 9 later.
Sea state
Rough, becoming very rough later.
Weather
Rain.
Visibility
Good, occasionally poor.

Shannon

High seas storm warning
Issued:

New low expected 52 north 16 west 976 by 111200UTC. Southwesterly winds will reach storm force 10 in the northern half of sea area Shannon after 111400UTC. Then westerly or southwesterly winds will reach violent storm force 11 to the north of 53 north in Shannon between 111600UTC and 111800 UTC, and also to the south of 55 north in sea area Rockall after 111700UTC. Also, southerly or southeasterly winds will reach storm force 10 at times to the south of 63 north in Norwegian Basin after 111000UTC.

Wind
Southerly 6 to gale 8, becoming cyclonic severe gale 9 to violent storm 11 later.
Sea state
Rough or very rough, becoming very rough or high later.
Weather
Rain.
Visibility
Moderate or poor.

Rockall

High seas storm warning
Issued:

New low expected 52 north 16 west 976 by 111200UTC. Southwesterly winds will reach storm force 10 in the northern half of sea area Shannon after 111400UTC. Then westerly or southwesterly winds will reach violent storm force 11 to the north of 53 north in Shannon between 111600UTC and 111800 UTC, and also to the south of 55 north in sea area Rockall after 111700UTC. Also, southerly or southeasterly winds will reach storm force 10 at times to the south of 63 north in Norwegian Basin after 111000UTC.

Wind
In south, southerly 6 to gale 8, becoming cyclonic severe gale 9 to violent storm 11 later. in north, cyclonic 6 to gale 8, decreasing 3 to 5 later.
Sea state
Rough or very rough, becoming very rough or high later in south.
Weather
Rain.
Visibility
Moderate or poor, occasionally good in north.

Bailey

Wind
Cyclonic 3 to 5 increasing 6 to gale 8, occasionally severe gale 9 in west.
Sea state
Moderate or rough becoming rough or very rough.
Weather
Showers then rain.
Visibility
Good, becoming moderate or poor.

Faeroes

Wind
Cyclonic 3 to 5 increasing 6 to gale 8, occasionally severe gale 9 in southeast.
Sea state
Mainly rough or verey rough, but moderate at first in west and high later in far east.
Weather
Wintry showers then rain.
Visibility
Good, occasionally poor.

Southeast Iceland

Wind
Northeasterly 6 to gale 8, occasionally severe gale 9 later.
Sea state
Moderate or rough until later in south and east, otherwise rough or very rough.
Weather
Wintry showers then rain.
Visibility
Good, occasionally poor.

East Northern Section

In northern half of the area

Wind
Easterly 4 or 5 at first in southeast, otherwise northerly or northeasterly mainly 6 to gale 8, occasionally severe gale 9 in east, but 4 to 6 throughout in far northwest.
Sea state
Moderate or rough in far northwest, elsewhere mainly rough or very rough, but becoming high later in east.
Weather
Rain in southeast but sleet or snow showers in northwest.
Visibility
Moderate or good, occasionally poor in southeast and very poor in northwest.

In southern half of the area

Wind
Cyclonic 6 to gale 8, decreasing 4 to 6 later in southeast but occasionally severe gale 9 elsewhere.
Sea state
Rough or very rough, becoming high later in northeast.
Weather
Rain, then squally showers later, becoming wintry in northwest.

West Northern Section

In southeastern half of the area

Wind
Northeasterly 6 to gale 8, occasionally severe gale 9 at first in far southeast, then backing northerly later.
Sea state
Mainly rough or very rough, but high at first in far southeast and moderate at first in north.
Weather
Rain at first in far southeast, otherwise sleet showers in south and snow showers in north.
Visibility
Moderate or good, occasionally poor in south and very poor in north.

In northwestern half of the area

Wind
Cyclonic mainly northerly or northeasterly, 4 to 6, increasing 6 to gale 8 for a time in north but becoming variable 3 in far northwest.
Sea state
Very rough at first in south, otherwise moderate or rough.
Weather
Snow showers.
Visibility
Good, occasionally very poor. Light or moderate icing at times in north.

East Central Section

In northern half of the area

Wind
Southwesterly 5 to 7 becoming cyclonic 4 to 6, increasing 7 to severe gale 9 later in east.
Sea state
Rough or very rough.
Weather
Rain or showers, perhaps thundery.
Visibility
Moderate or good, occasionally poor.

In southern half of the area

Wind
Southwesterly veering westerly 6 to gale 8, occasionally 5 at first, then increasing severe gale 9 for a time in east.
Sea state
Rough becoming very rough.
Weather
Rain then squally showers, perhaps thundery.
Visibility
Moderate or good, occasionally poor.

West Central Section

In southern half of the area

Wind
Westerly or northwesterly 6 to gale 8, becoming cyclonic mainly 4 to 6 later, but increasing 7 to severe gale 9 later in far southwest.
Sea state
Rough or very rough, occasionally high in far southwest.
Weather
Rain or showers, perhaps thundery at times in far south.
Visibility
Moderate or good, occasionally poor.

In northern half of the area

Wind
Cyclonic becoming northerly or northeasterly, 4 to 6, increasing 7 to severe gale 9 for a time in east.
Sea state
Rough or very rough, occasionally high in far northeast.
Weather
Rain then showers, becoming wintry.
Visibility
Moderate or good, occasionally poor.

Denmark Strait

Wind
Northerly or northeasterly 5 to 7, occasionally 4 at first and gale 8 later.
Sea state
Slight or moderate becoming moderate or rough.
Weather
Sleet or snow showers.
Visibility
Good, occasionally very poor. Light or moderate icing at times except in southeast, with temperatures ms03 to ms06.

North Iceland

In area to the north of 68 north

Wind
Cyclonic 4 to 6, occasionally 3 at first in west.
Sea state
Moderate or rough.
Weather
Snow at times.
Visibility
Good, occasionally very poor. Light or moderate icing developing later, mainly in west, with temperatures ms03 to ms06.

In area to the south of 68 north

Wind
Variable 2 to 4 at first in north, otherwise cyclonic 4 to 6, but becoming northeasterly 7 to severe gale 9 later in east.
Sea state
Moderate or rough, becoming very rough later in east.
Weather
Snow showers, then rain or snow in southeast.
Visibility
Moderate or good, occasionally very poor, but becoming moderate or poor later in far southeast.

Norwegian Basin

High seas storm warning
Issued:

New low expected 52 north 16 west 976 by 111200UTC. Southwesterly winds will reach storm force 10 in the northern half of sea area Shannon after 111400UTC. Then westerly or southwesterly winds will reach violent storm force 11 to the north of 53 north in Shannon between 111600UTC and 111800 UTC, and also to the south of 55 north in sea area Rockall after 111700UTC. Also, southerly or southeasterly winds will reach storm force 10 at times to the south of 63 north in Norwegian Basin after 111000UTC.

In area to the west of 06 east

Wind
Southerly or southwesterly 6 to gale 8 backing southerly or southeasterly 7 to severe gale 9, occasionally storm 10 later in south.
Sea state
Rough or very rough, becoming high later.
Weather
Rain or sleet at times.
Visibility
Moderate or poor, occasionally good at first.

In area to the east of 06 east

Wind
Southwesterly 5 or 6 backing southeasterly 4 to 6, then increasing 7 or gale 8 later in far northeast.
Sea state
Moderate or rough, occasionally very rough in far west.
Weather
Mainly fair.
Visibility
Good.

Outlook for following 24 hours

Violent storm force winds expected in Rockall and Norwegian Basin. Storm force winds expected in Southeast Iceland. Severe gales expected in Shannon, Bailey, Faeroes, East Northern Section and north Iceland. Gales expected in Sole, West Northern Section, East Central Section, West Central Section and Denmark Strait.

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.