Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 220000UTC, low 63 north 16 west expected 66 north 05 east by 210000UTC. Low 44 north 51 west 1001 expected 54 north 40 west 970 by same time. Low 66 north 32 west 982 expected 65 north 31 west 996 by that time

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
Variable 2 to 4, becoming north or northeast 3 to 5 for a time.
Sea state
Moderate or rough in sole and southwest fastnet, smooth or slight in irish sea, slight or moderate elsewhere
Weather
Occasional drizzle.
Visibility
Moderate or good

Shannon

Wind
Northwest 4 to 6, becoming variable 2 to 4, then southwest 4 to 6 later.
Sea state
Rough or very rough
Weather
Fair.
Visibility
Moderate or good

Rockall

Wind
Westerly or northwesterly, 7 or gale 8 at first in north Rockall, otherwise 4 to 6, backing southwesterly 5 to 7 later.
Sea state
Very rough or high at first in north Rockall, otherwise rough or very rough
Weather
Showers.
Visibility
Moderate or good

Bailey

High seas storm warning
Issued:

At 220000UTC, low 63 north 16 west expected 66 north 05 east by 210000UTC. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 50 and 250 miles of the low centre until 230600UTC. Low 44 north 51 west 1001 expected 54 north 40 west 970 by same time. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 20 and 150 miles of the low centre from 230200UTC.

Wind
West severe gale 9 to violent storm 11, decreasing 7 to severe gale 9, backing south or southwest 4 to 6 later.
Sea state
High or very high, becoming very rough or high
Weather
Squally wintry showers.
Visibility
Moderate to very poor

Faeroes

High seas storm warning
Issued:

At 220000UTC, low 63 north 16 west expected 66 north 05 east by 210000UTC. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 50 and 250 miles of the low centre until 230600UTC. Low 44 north 51 west 1001 expected 54 north 40 west 970 by same time. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 20 and 150 miles of the low centre from 230200UTC.

Wind
Cyclonic severe gale 9 to violent storm 11, becoming westerly 7 to severe gale 9, decreasing 4 to 6 later.
Sea state
High or very high, becoming very rough or high, then rough or very rough later
Weather
Squally wintry showers.
Visibility
Moderate to very poor

Southeast Iceland

High seas storm warning
Issued:

At 220000UTC, low 63 north 16 west expected 66 north 05 east by 210000UTC. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 50 and 250 miles of the low centre until 230600UTC. Low 44 north 51 west 1001 expected 54 north 40 west 970 by same time. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 20 and 150 miles of the low centre from 230200UTC.

Wind
Cyclonic severe gale 9 to violent storm 11, becoming westerly 7 to severe gale 9, decreasing 4 to 6 later.
Sea state
High or very high, becoming very rough or high, then rough or very rough later
Weather
Squally wintry showers.
Visibility
Moderate to very poor

East Northern Section

In north

Wind
Westerly 7 to severe gale 9, backing southerly or southeasterly 5 to 7 later.
Sea state
Very rough or high becoming rough or very rough later.
Weather
Squally snow showers, then rain later.
Visibility
Moderate or good, occasionally very poor.

In south

Wind
Westerly 7 to severe gale 9 decreasing 4 to 6, becoming cyclonic 6 to gale 8 later.
Sea state
Very rough or high becoming rough or very rough later.
Weather
Squally snow showers, then rain later.
Visibility
Moderate or good, occasionally very poor.

West Northern Section

High seas storm warning
Issued:

At 220000UTC, low 63 north 16 west expected 66 north 05 east by 210000UTC. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 50 and 250 miles of the low centre until 230600UTC. Low 44 north 51 west 1001 expected 54 north 40 west 970 by same time. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 20 and 150 miles of the low centre from 230200UTC.

In north

Wind
Westerly or northwesterly 7 to severe gale 9, decreasing 5 to 7, becoming cyclonic 4 to 6 later.
Sea state
Rough or very rough, occasionally high at first in east.
Weather
Snow showers.
Visibility
Moderate or good, occasionally very poor. Light to moderate icing in north, occasional severe icing in far northwest.

In south

Wind
Westerly 6 to gale 8, becoming cyclonic 4 to 6, increasing 7 to severe gale 9 later, occasionally storm 10 later in far south.
Sea state
Very rough or high becoming rough or very rough for a time.
Weather
Snow showers, then rain, sleet or snow later.
Visibility
Moderate to very poor.

East Central Section

In northwest

Wind
Variable 2 to 4, becoming southerly or southwesterly 5 to 7, occasionally gale 8 later.
Sea state
Rough or very rough.
Weather
Occasional rain.
Visibility
Moderate or good, occasionally poor.

In southeast

Wind
Variable 2 to 4, becoming southwest 5 or 6 later in northwest.
Sea state
Moderate or rough.
Weather
Occasional drizzle in northwest, good, occasionally moderate in northwest.

West Central Section

High seas storm warning
Issued:

At 220000UTC, low 63 north 16 west expected 66 north 05 east by 210000UTC. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 50 and 250 miles of the low centre until 230600UTC. Low 44 north 51 west 1001 expected 54 north 40 west 970 by same time. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 20 and 150 miles of the low centre from 230200UTC.

Wind
Cyclonic 4 to 6, increasing 7 to severe gale 9, occasionally storm 10 later in far north.
Sea state
Moderate or rough, becoming rough or very rough, then high later in northwest.
Weather
Occasional rain, wintry showers later in northwest.
Visibility
Moderate or good, occasionally poor.

Denmark Strait

Wind
Cyclonic, 6 to gale 8 near the ice edge, but elsewhere 4 to 6.
Sea state
Moderate or rough, occasionally very rough in far south.
Weather
Snow or snow showers.
Visibility
Good, occasionally poor. Occasional light to moderate icing within 50 miles of ice edge with temperatures ms02 to ms05. Occasional severe icing along ice edge, with temperatures ms04 to ms07.

North Iceland

High seas storm warning
Issued:

At 220000UTC, low 63 north 16 west expected 66 north 05 east by 210000UTC. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 50 and 250 miles of the low centre until 230600UTC. Low 44 north 51 west 1001 expected 54 north 40 west 970 by same time. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 20 and 150 miles of the low centre from 230200UTC.

In north

Wind
Northerly or northwesterly 6 to gale 8, occasionally severe gale 9 in far northwest.
Sea state
Rough or very rough.
Weather
Snow or snow showers.
Visibility
Moderate or poor. Light to moderate icing with temperatures ms02 to ms05, occasional severe or very severe icing within 50 miles of ice edge with temperatures ms07 to ms10.

In south

Wind
Cyclonic becoming northerly or northwesterly, 7 to severe gale 9, occasionally storm 10 at first in far southeast, decreasing 4 to 6 later.
Sea state
Rough or very rough, becoming high or very high for a time in southeast.
Weather
Rain and snow, then snow showers.
Visibility
Moderate or good, occasionally poor. Light to moderate icing in northwest with temperatures ms02 to ms05, occasional severe icing near ice edge with temperatures ms05 to ms08.

Norwegian Basin

High seas storm warning
Issued:

At 220000UTC, low 63 north 16 west expected 66 north 05 east by 210000UTC. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 50 and 250 miles of the low centre until 230600UTC. Low 44 north 51 west 1001 expected 54 north 40 west 970 by same time. Westerly or southwesterly winds will reach storm force 10 at times in the southern semicircle within 20 and 150 miles of the low centre from 230200UTC.

In east

Wind
Southerly or southwesterly 6 to gale 8, increasing gale 8 to storm 10, veering westerly 5 to 7 later.
Sea state
Very rough or high, becoming high or very high for a time.
Weather
Rain then squally snow showers.
Visibility
Moderate to very poor.

In west

Wind
Westerly or southwesterly gale 8 to storm 10, decreasing 4 to 6 later.
Sea state
Very rough or high, becoming high or very high for a time.
Weather
Rain then squally snow showers.
Visibility
Moderate to very poor.

Outlook for following 24 hours

Storms expected in East Northern Section, West Northern Section, West Central Section. Severe gales expected in Rockall, Bailey, Faeroes, Southeast Iceland, East Central Section, Denmark Strait, north Iceland and Norwegian Basin.

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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