Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 261200UTC, low 64 north 36 west 966, expected 63 north 20 west 974 by 271200UTC. High 71 north 28 west 1021, slow-moving, dissipating by same time. High 42 north 45 west 1037, expected 45 north 34 west with little change by that time. New high expected 64 north 45 west 1018 by 271200UTC

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
Westerly, veering northwesterly later, 4 to 6.
Sea state
Moderate or rough, occasionally very rough later.
Weather
Occasional rain.
Visibility
Good occasionally moderate.

Shannon

Wind
Southwest, veering west, 4 to 6.
Sea state
Rough, becoming very rough or high.
Weather
Rain then showers.
Visibility
Poor becoming good.

Rockall

Wind
West 7 to severe gale 9, perhaps storm 10 later.
Sea state
Rough or very rough, becoming high or very high.
Weather
Squally wintry showers.
Visibility
Moderate or poor.

Bailey

Wind
Southwest, veering west, 7 to severe gale 9, perhaps storm 10 later.
Sea state
Very rough or high, becoming very high.
Weather
Squally showers.
Visibility
Good becoming poor.

Faeroes

Wind
South, veering southwest, 6 to gale 8, occasionally severe gale 9.
Sea state
Rough or very rough, becoming high or very high.
Weather
Rain then squally showers.
Visibility
Moderate becoming poor.

Southeast Iceland

Wind
Southwesterly, becoming cyclonic, 7 to severe gale 9.
Sea state
Rough or very rough, becoming high or very high.
Weather
Squally showers.
Visibility
Poor occasionally moderate.

East Northern Section

High seas storm warning
Issued:

At 261200UTC, low 64 north 36 west 966 expected 63 north 20 west 974 by 271200UTC. Winds will reach storm force 10 or violent storm force 11 in the southern semi circle between 100 and 250 miles from the low throughout. Winds will also reach storm force 10 or violent storm force 11 in the north-western quadrant between 150 and 350 miles from the low until 271300UTC.

Wind
Cyclonic for a time in far north, otherwise westerly or southwesterly, veering northwesterly, gale 8 to storm 10, occasionally violent storm 11 at first in far west.
Sea state
High or very high.
Weather
Squally wintry showers.
Visibility
Moderate or poor.

West Northern Section

High seas storm warning
Issued:

At 261200UTC, low 64 north 36 west 966 expected 63 north 20 west 974 by 271200UTC. Winds will reach storm force 10 or violent storm force 11 in the southern semi circle between 100 and 250 miles from the low throughout. Winds will also reach storm force 10 or violent storm force 11 in the north-western quadrant between 150 and 350 miles from the low until 271300UTC.

Wind
Northerly or northwesterly gale 8 to storm 10, occasionally violent storm 11 at first in northeast, decreasing 5 to 7, then backing westerly backing westerly 4 to 6 later.
Sea state
High or very high, becoming very rough later, occasionally rough later in far northwest.
Weather
Squally snow showers, but rain and snow at first in far northeast.
Visibility
Moderate or poor, occasionally very poor at first in far northeast. Light or moderate icing in far north for a time.

East Central Section

In north

Wind
Westerly 6 to gale 8, decreasing 4 or 5 later in west.
Sea state
Very rough or high.
Weather
Rain, squally wintry showers.
Visibility
Moderate or good.

In south

Wind
Southwesterly at first in east, otherwise northerly or northwesterly, 4 to 6, occasionally 3 later in far west.
Sea state
Rough or very rough, occasionally moderate at first in far east.
Weather
Occasional rain and drizzle then fair.
Visibility
Moderate or good, occasionally poor.

West Central Section

In south

Wind
Westerly or northwesterly 4 to 6, backing southerly 5 to 7 in west, but becoming variable 2 to 4 in east.
Sea state
Rough or very rough.
Weather
Wintry showers then fair.
Visibility
Good occasionally moderate.

In north

Wind
Westerly, backing southerly in west, 5 to 7, occasionally gale 8 later in west.
Sea state
Very rough occasionally high.
Weather
Squally snow showers, fair later.
Visibility
Good occasionally poor.

Denmark Strait

High seas storm warning
Issued:

At 261200UTC, low 64 north 36 west 966 expected 63 north 20 west 974 by 271200UTC. Winds will reach storm force 10 or violent storm force 11 in the southern semi circle between 100 and 250 miles from the low throughout. Winds will also reach storm force 10 or violent storm force 11 in the north-western quadrant between 150 and 350 miles from the low until 271300UTC.

Wind
Northeasterly severe gale 9 to violent storm 11, backing northerly 6 to gale 8, then becoming variable 2 to 4 later in west.
Sea state
Very rough or high, occasionally very high at first in far south, becoming rough near ice edge.
Weather
Occasional snow and squally snow showers.
Visibility
Moderate or poor, occasionally very poor. Widespread light or moderate icing with temperatures ms02 to ms05. Occasional severe or very severe icing near ice edge with temperatures ms06 to ms09.

North Iceland

High seas storm warning
Issued:

At 261200UTC, low 64 north 36 west 966 expected 63 north 20 west 974 by 271200UTC. Winds will reach storm force 10 or violent storm force 11 in the southern semi circle between 100 and 250 miles from the low throughout. Winds will also reach storm force 10 or violent storm force 11 in the north-western quadrant between 150 and 350 miles from the low until 271300UTC.

In north

Wind
Northeasterly 6 to gale 8, occasionally 5 at first.
Sea state
Moderate or rough, occasionally very rough later.
Weather
Squally snow showers.
Visibility
Moderate or good, occasionally poor. Light or moderate icing developing with temperatures ms04 to ms07.

In south

Wind
Easterly, becoming cyclonic, 7 to severe gale 9, occasionally storm 10 in far west, then becoming northerly later in west.
Sea state
Rough or very rough, occasionally high later.
Weather
Occasional rain and snow.
Visibility
Moderate or good, occasionally very poor. Light or moderate icing becoming confined to west, with temperatures ms02 to ms05.

Norwegian Basin

In west

Wind
Southerly, veering southwesterly, 6 to gale 8.
Sea state
Rough or very rough, becoming high later.
Weather
Rain and snow, wintry showers.
Visibility
Moderate or good, occasionally poor. Rain or sleet then squally showers. Moderate or poor becoming good.

In east

Wind
Variable, becoming southwesterly, 2 to 4, increasing 6 to gale 8.
Sea state
Very rough occasionally rough.
Weather
Snow showers, then occasional sleet, squally showers later.
Visibility
Moderate or good, occasionally poor.

Outlook for following 24 hours

Storms or violent storms expected in Rockall, Bailey, West Central Section, East Northern Section, West Central Section and Denmark Strait. Gales or severe gales expected in remaining areas except Sole and Shannon.

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.