Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 181200UTC, high 53 north 29 west 1025 dissipating by 191200UTC. New low moving slowly northeast, expected 65 north 38 west 971 by same time.

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
Easterly or northeasterly 4 to 6.
Sea state
Rough or very rough becoming rough.
Weather
Fair.
Visibility
Good.

Shannon

Wind
Northeasterly 4 to 6, veering easterly or southeasterly 3 to 5 later.
Sea state
Rough, occasionally very rough at first and moderate later.
Weather
Mainly fair.
Visibility
Good.

Rockall

Wind
In south, northeasterly 4 to 6, veering easterly or southeasterly 3 to 5 later. in north, northwesterly 2 to 4, backing southwesterly 3 to 5, occasionally 6 later in northwest.
Sea state
Rough, occasionally very rough at first and moderate later.
Weather
In south, mainly fair. in north, fair.
Visibility
Good.

Bailey

Wind
West 4 to 6, backing southwest 6 to gale 8.
Sea state
Rough occasionally very rough, becoming high later in northwest.
Weather
Showers at first.
Visibility
Good.

Faeroes

Wind
West or southwest 4 to 6, increasing 6 to gale 8 later.
Sea state
Rough or very rough.
Weather
Showers at first.
Visibility
Good, occasionally moderate.

Southeast Iceland

Wind
Cyclonic 3 to 5 becoming southwesterly 6 to gale 8, occasionally severe gale 9 later.
Sea state
Rough, becoming very rough or high later.
Weather
Showers, rain later.
Visibility
Good, occasionally poor.

East Northern Section

High seas storm warning
Issued:

New low moving slowly northeast, expected 65 north 38 west 971 by 191200UTC. Winds are expected to reach storm force 10 between 200 and 400 miles of the centre in the southern semicircle in West Northern Section from 190800UTC and violent storm force 11 in the far west of West Northern Section within this semicircle from 191100UTC. Northwesterly winds are also expected to reach storm force 10 or violent storm force 11 in area enclosed north of 63 north and west of 37 west in both West Northern Section and Denmark Strait both from 191200UTC.

In far southeast

Wind
Variable 2 to 4, becoming southwesterly 4 to 6.
Sea state
Moderate or rough occasionally very rough.
Weather
Fair.
Visibility
Good.

In rest of area

Wind
Westerly 4 to 6 at first in east, otherwise southerly or southwesterly 7 to severe gale 9, decreasing 6 at times in south, perhaps storm 10 later in northwest.
Sea state
Moderate or rough at first in north, otherwise rough or very rough becoming very rough or high, occasionally very high later in northwest.
Weather
Rain at times, squally wintry showers later in north and west.
Visibility
Moderate or good, becoming moderate or poor.

West Northern Section

High seas storm warning
Issued:

New low moving slowly northeast, expected 65 north 38 west 971 by 191200UTC. Winds are expected to reach storm force 10 between 200 and 400 miles of the centre in the southern semicircle in West Northern Section from 190800UTC and violent storm force 11 in the far west of West Northern Section within this semicircle from 191100UTC. Northwesterly winds are also expected to reach storm force 10 or violent storm force 11 in area enclosed north of 63 north and west of 37 west in both West Northern Section and Denmark Strait both from 191200UTC.

In far northwest

Wind
Cyclonic becoming southwesterly, 6 to gale 8, veering northwesterly severe gale 9 to violent storm 11 later.
Sea state
Moderate or rough occasionally very rough, becoming very rough or high except near greenland.
Weather
Showers turning wintry, then mainly fair later.
Visibility
Moderate or good, occasionally poor. Occasional light icing, then severe or very severe icing developing later.

In area south of 59 north

Wind
Southerly or southwesterly 7 to severe gale 9, veering westerly 6 to gale 8 later in south.
Sea state
Very rough or high.
Weather
Rain at times, then squally snow showers in west and also later in east.
Visibility
Moderate or poor, occasionally very poor in west and also later in east. Light icing later in far northwest.

In rest of area

Wind
Southerly or southwesterly 7 to severe gale 9, veering westerly or southwesterly gale 8 to storm 10 later, occasionally violent storm 11 later in west.
Sea state
Very rough or high, becoming high or very high later.
Weather
Rain then squally showers, but squally snow showers in west and also later in east.
Visibility
Moderate or poor, occasionally very poor in west and also later in east. Light icing later in west, occasionally moderate later in far west.

East Central Section

In far northwest

Wind
Southerly or southeasterly 4 to 6, occasionally 3 in southeast, veering southwesterly 5 to 7, increasing gale 8 at times in northwest.
Sea state
Rough or very rough, occasionally moderate later.
Weather
Mainly fair, then rain later.
Visibility
Moderate or good, occasionally poor later.

In rest of area

Wind
Northeasterly 5 to 7, occasionally 4 in northwest and gale 8 at first in south, becoming variable 2 to 4 later in north.
Sea state
Rough or very rough, becoming moderate or rough later in north.
Weather
Rain or squally showers at first in southeast, otherwise mainly fair.
Visibility
Moderate or good, occasionally poor at first in southeast.

West Central Section

In north

Wind
Southerly or southwesterly 5 to 7, occasionally gale 8 in north, veering westerly or northwesterly 4 to 6 later.
Sea state
Rough or very rough.
Weather
Occasional rain, with fog patches for a time in south and east, then snow showers in north and west.
Visibility
Moderate or good, occasionally very poor in south and east, and poor in north and west.

In southeast

Wind
Northeasterly in southeast, otherwise southeasterly, becoming cyclonic later, 4 to 6, decreasing 3 at times.
Sea state
Rough, occasionally very rough at first.
Weather
Fair then occasional rain in north and west.
Visibility
Good, occasionally poor in north and west.

In southwest

Wind
Westerly or northwesterly 3 to 5, occasionally 6 at first.
Sea state
Rough, occasionally very rough at first.
Weather
Rain or drizzle with fog patches, becoming mainly fair later except in far east.
Visibility
Moderate or good, occasionally very poor.

Denmark Strait

High seas storm warning
Issued:

New low moving slowly northeast, expected 65 north 38 west 971 by 191200UTC. Winds are expected to reach storm force 10 between 200 and 400 miles of the centre in the southern semicircle in West Northern Section from 190800UTC and violent storm force 11 in the far west of West Northern Section within this semicircle from 191100UTC. Northwesterly winds are also expected to reach storm force 10 or violent storm force 11 in area enclosed north of 63 north and west of 37 west in both West Northern Section and Denmark Strait both from 191200UTC.

Wind
Cyclonic becoming southerly or southwesterly, 6 to gale 8, occasionally severe gale 9 in south and 5 in north, veering northwesterly severe gale 9 to violent storm 11 later west of 37 west.
Sea state
Rough or very rough, occasionally moderate at first, becoming very rough or high later.
Weather
Occasional rain, sleet and snow, then squally snow showers later, but mainly fair later in west.
Visibility
Moderate to very poor, occasionally good later. Occasional light icing near the ice edge with temperatures around ms04, becoming severe or very severe later in far southwest with temperatures ms06 to ms08.

North Iceland

In east

Wind
Variable 2 to 4 at first in far southwest, otherwise westerly or northwesterly 6 to gale 8, backing southerly or southwesterly, then southeasterly later in north, 5 to 7, occasionally gale 8 later, perhaps severe gale 9 later in south.
Sea state
Rough or very rough, occasionally high later in far south.
Weather
Fair at first in south and snow showers at first in north, then occasional rain, sleet and snow in southwest and also later elsewhere, then squally showers later in south.
Visibility
Moderate or good, occasionally very poor. Occasional light icing at first in north with temperatures ms02 to ms04.

In west

Wind
Westerly or southwesterly 4 to 6, backing southerly or southeasterly 6 to gale 8, veering southwesterly later except in far north, perhaps severe gale 9 later in south.
Sea state
Rough or very rough.
Weather
Fair then occasional rain, sleet and snow, squally snow showers later in south.
Visibility
Moderate or good, occasionally very poor. Occasional light icing until later in north with temperatures ms02 to ms04.

Norwegian Basin

Wind
Westerly 6 to gale 8 at first in northeast, otherwise westerly or southwesterly 4 to 6, increasing 6 to gale 8 later in northwest.
Sea state
Rough or very rough, occasionally high at first in far northeast.
Weather
Showers, squally at first in northeast, rain later in northwest.
Visibility
Moderate or good, occasionally poor at first in northeast and later in northwest.

Outlook for following 24 hours

Hurricane force winds expected in West Northern Section with violent storms in Denmark Strait. Storms expected in East Northern Section with severe gales in Southeast Iceland and north Iceland and a risk of severe gales in Norwegian Basin. Gales expected in Bailey, Faeroes and West Central 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.

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