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High Seas forecast

High seas forecasts for the next 24 hours

Issued: 2000 on Fri 31 Oct 2014 UTC

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

Storm warnings

At 311200UTC, low 58 north 23 west 973 expected 62 north 20 west 971 by 011200UTC. Northeasterly winds are expected to reach storm force 10 throughout in the far north of west northern section, in Denmark Strait south of 70 north and the far southwest of Denmark Strait. Northeasterly winds will reach violent storm force 11 at times throughout in central areas of Denmark Strait

General synopsis

At 311200UTC, low 58 north 23 west 973 expected 62 north 20 west 971 by 011200UTC. New low moving rapidly northeastwards, expected 53 north 14 west 994 by same time. New highs expected 47 north 45 west 1025 and 65 north 46 west 1017 by that time. High 69 north 08 east 1026 dissipating

Sole

Westerly 5 or 6, backing southwesterly 6 to gale 8, perhaps severe gale 9 later. Moderate or rough, becoming rough or very rough. Rain or showers. Good occasionally poor.

Shannon

West backing south for a time, 6 to gale 8, perhaps severe gale 9 later. Rough or very rough. Rain or showers. Good, occasionally poor.

Rockall

South or southwest 5 to 7, occasionally gale 8. Rough or very rough, becoming very rough or high. Rain or showers. Good, occasionally poor.

Bailey

South or southwest 5 to 7, occasionally gale 8. Rough or very rough, becoming very rough or high. Rain or showers. Good, occasionally poor.

Faeroes

Southerly 5 to 7, perhaps gale 8 later. Moderate or rough, becoming rough or very rough. Rain or showers. Good occasionally poor.

Southeast Iceland

Cyclonic at first, otherwise southerly 5 to 7, perhaps gale 8 later. Moderate or rough, becoming rough or very rough. Rain or showers. Good occasionally poor.

East Northern Section

In north

Cyclonic 5 to 7, but northeasterly 7 to severe gale 9 in far northwest. Moderate or rough near Iceland, otherwise rough or very rough and becoming high or very high in far northwest. Occasional rain or wintry showers. Moderate or good, occasionally poor.

In south

Westerly or southwesterly 6 to gale 8, occasionally severe gale 9 in far south. Rough or very rough, occasionally high. Occasional rain or showers. Moderate or good, occasionally poor.

West Northern Section

In north

Cyclonic 5 to 7 in southeast, otherwise northeasterly 7 to severe gale 9, occasionally storm 10 in far north. High or very high. Occasional rain, turning to sleet or snow at times in north. Moderate or poor, occasionally good in south.

In south

Cyclonic 5 to 7 in northeast, otherwise westerly or northwesterly 6 to gale 8, occasionally severe gale 9 later in southeast. Very rough or high. Occasional rain or showers. Moderate or good, occasionally poor.

East Central Section

Mainly westerly, but becoming cyclonic for a time in central areas, 6 to gale 8, occasionally severe gale 9 later in northwest. Rough or very rough, occasionally high in north. Occasional rain until later in central and southern areas, otherwise showers. Moderate or poor until later in central and southern areas, otherwise mainly good.

West Central Section

In south

Westerly veering northwesterly 5 to 7, occasionally gale 8, becoming variable 4 later in far southwest. Rough or very rough. Occasional rain, becoming fair. Moderate or poor, becoming good.

In north

Cyclonic, becoming mainly westerly or northwesterly 5 to 7, occasionally gale 8, increasing severe gale 9 at times later in northeast. Rough or very rough, occasionally high in northeast. Showers. Good.

Denmark Strait

In area south of 70 north

Northeasterly gale 8 to storm 10, increasing violent storm force 11 at times in central areas. Rough or very rough near ice edge, otherwise very rough or high. Occasional snow, turning to rain at times in southeast. Poor or very poor, occasionally moderate. Moderate or severe icing in north with temperatures ms02 to ms05.

In area north of 70 north

Northerly 4 or 5, increasing 6 to gale 8 in south. Moderate, becoming rough or very rough in south. Snow for a time in south, otherwise fair. Good, becoming poor or very poor for a time in south. Moderate or severe icing developing in south with temperatures ms04 to ms07.

North Iceland

In north

Mainly northerly 4 or 5, veering northeasterly 6 to gale 8, occasionally severe gale 9 later in far south. Moderate becoming rough or very rough, and high later in far south. Rain or snow later in south, otherwise fair. Good becoming poor or very poor in south. Moderate icing developing in central and southwestern areas with temperatures ma02 to ms04.

In southeast

Easterly 7 to severe gale 9, becoming cyclonic, mainly southerly later, 5 to 7. Rough or very rough, becoming high at times in north and west. Occasional rain then showers. Moderate or poor, occasionally good.

In southwest

Easterly backing northeasterly 7 to severe gale 9, occasionally storm 10 in west. Very rough or high, becoming high or very high. Occasional rain, turning to snow in northwest. Moderate or poor, occasionally very poor in northwest, but becoming good at times in southeast. Moderate icing developing in far northwest with temperatures ms02 to ms04.

Norwegian Basin

Easterly or southeasterly 6 to gale 8, occasionally severe gale 9 at first, veering southerly 5 to 7. Moderate at times near norwegian coast, otherwise rough or very rough. Rain then showers. Moderate or poor, becoming good.

Outlook for following 24 hours

From Sat 01 Nov 2014

Storms expected in Denmark Strait and north Iceland. Gales or severe gales expected in all other areas except Bailey, Faeroes and 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.

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