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High Seas forecast

High seas forecasts for the next 24 hours

Issued: 0800 on Fri 27 Mar 2015 UTC

The high seas forecast, issued by the Met Office, on behalf of the Maritime and Coastguard Agency

General synopsis

At 270000UTC, low 44 north 36 west 1004 expected 55 north 16 west 989 by 28000UTC. Low 62 north 37 west 974 expected 66 north 23 west 978 by same time. Low 73 north 09 west 989 expected 80 north 01 west 984 by that time. at 270000UTC, high 39 north 16 west 1033, slow moving, intensifying 1036 by 280000UTC. New low expected 71 north 14 west 977 by same time. New high expected 64 north 45 west 1002 by that time

Sole

Southerly 4 or 5 at first in east, otherwise southwesterly 5 to 7, perhaps gale 8 later. Moderate or rough, becoming very rough later in west. Occasional rain. Moderate or poor.

Shannon

Cyclonic 5 to 7, becoming southwesterly 7 to severe gale 9 later. Rough, becoming very rough or high later. Rain. Moderate or poor.

Rockall

Southwest 5 or 6, becoming cyclonic 7 to severe gale 9 later. Rough, becoming very rough or high later. Showers, rain later. Good, becoming moderate or poor.

Bailey

Southwesterly becoming cyclonic later, 5 to 7, perhaps gale 8 later in southeast. Rough or very rough. Showers, rain later. Good, becoming poor later.

Faeroes

Mainly southwest backing southeast later, 5 to 7. Rough or very rough. Showers. Good.

Southeast Iceland

Southwesterly 6 to gale 8. Rough or very rough. Showers. Good.

East Northern Section

In far southeast

Westerly 5 to 7, becoming cyclonic 7 to severe gale 9 for a time later. Rough or very rough. Showers, rain for a time later. Good, becoming moderate or poor for a time later.

In far southwest

Westerly or southwesterly 5 or 6, decreasing 4 for a time. Rough or very rough. Fair then occasional rain or wintry showers. Good, occasionally poor.

In rest of area

Southwesterly 7 or gale 8, occasionally severe gale 9 in northwest, decreasing 5 or 6 later. Very rough or high, becoming rough later. Sleet or snow showers. Moderate or good, occasionally poor.

West Northern Section

In far north

Cyclonic 5 to 7, becoming variable 4 later. Very rough, occasionally high in east, becoming moderate or rough. Occasional snow or snow showers. Moderate or good, occasionally very poor. Light or moderate icing at first.

In far south

Westerly or southwesterly 5 or 6. Rough or very rough, becoming moderate or rough. Occasional rain or wintry showers. Moderate or good, occasionally poor.

In rest of area

Westerly or southwesterly gale 8 or severe gale 9, decreasing 5 to 7. High becoming moderate or rough, occasionally very rough, later. Snow showers. Moderate or good, occasionally very poor. Light or moderate icing in far west.

East Central Section

In north

Variable 4, becoming cyclonic, then westerly or southwesterly later, 6 to gale 8, occasionally severe gale 9 for a time in northwest. Rough or very rough, becoming high later in east. Occasional rain with sleet or snow for a time in northwest. Good becoming moderate or poor and very poor for a time in northwest.

In south

Southwesterly 5 to 7, occasionally gale 8. Rough or very rough. Occasional rain or drizzle. Moderate or good, occasionally poor.

West Central Section

In south

Cyclonic 5 to 7, becoming southwesterly 6 to gale 8, occasionally severe gale 9 later. Rough or very rough, becoming very rough or high later. Occasional rain or showers. Moderate or good, occasionally poor.

In north

Variable 4 at first in east, otherwise southwesterly 5 to 7, occasionally gale 8 in south. Moderate or rough, becoming very rough in far south and in far east. Occasional rain or showers with sleet or snow for a time in northeast. Moderate or good, occasionally poor, becoming very poor for a time in northeast.

Denmark Strait

Cyclonic, becoming mainly northeasterly, except in far southeast, 5 to 7, occasionally gale 8 in north, decreasing 4 at times. Moderate or rough, becoming very rough for a time in southeast. Occasional snow or snow showers. Moderate, occasionally very poor. Light or moderate icing, occasionally severe in north, extending to all except far southeast, with temperatures ms03 to ms06, but ms07 to ms10 in north.

North Iceland

In north

Westerly or northwesterly 4 or 5, becoming cyclonic 6 to gale 8, occasionally severe gale 9 later in north. Moderate or rough, becoming rough, occasionally very rough. Snow showers then snow. Good, occasionally poor, becoming poor or very poor. Moderate or severe icing developing in north and west, with temperatures ms03 to ms06.

In south

Southerly or southeasterly veering southwesterly, but becoming cyclonic at times in west, 5 to 7, occasionally gale 8. Moderate or rough, occasionally very rough in southeast. Occasional rain, snow or wintry showers. Moderate or good, occasionally very poor. Light or moderate icing developing in west with temperatures ms03 to ms06, becoming severe at times near ice edge with temperatures ms07 to ms10.

Norwegian Basin

Southerly or southwesterly 5 to 7, decreasing 4 at times. Moderate or rough, becoming rough or very rough later. Occasional rain or wintry showers. Good, occasionally poor.

Outlook for following 24 hours

From Sat 28 Mar 2015

Storms expected in Norwegian Basin. Gales or severe gales expected in all other areas except Southeast Iceland.

Unscheduled storm warnings are broadcast via Safetynet and in bulletin WONT54 EGRR available via some internet and ftpmail outlets

High Seas overview

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 containg forecast wind direction and force, weather and visibility for the next 24 hours with an outlook for the following 24 hours.

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.