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High Seas forecast

High seas forecasts for the next 24 hours

Issued: 2000 on Sat 25 Apr 2015 UTC

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

General synopsis

At 251200UTC, low 61 north 06 east 991 expected 66 north 00 east 975 by 261200UTC. High 55 north 45 west 1025 expected 52 north 32 west 1028 by same time. New high expected 71 north 36 west 1042 by that time. Lows 46 north 17 west 998 and 63 north 36 west 1022, both losing their identities

Sole

Cyclonic 4 or 5, becoming northeasterly 5 to 7. Moderate or rough. Rain or showers. Good, occasionally poor.

Shannon

Northeast backing northwest later, 5 to 7. Moderate or rough. Showers. Good.

Rockall

North or northwest, becoming cyclonic later, 5 to 7. Rough or very rough. Wintry showers. Good, occasionally poor later.

Bailey

North backing northwest later, 5 to 7, occasionally gale 8. Rough or very rough. Wintry showers. Good, occasionally poor.

Faeroes

Northerly backing northwesterly later, 7 to severe gale 9. Rough or very rough, occasionally high. Snow or snow showers. Moderate, occasionally very poor.

Southeast Iceland

Northerly backing northwesterly later, 7 to severe gale 9. Rough or very rough, occasionally high. Snow or snow showers. Moderate, occasionally very poor, occasional light icing in north.

East Northern Section

Mainly northerly 5 to 7, but cyclonic 6 to gale 8 at first in central areas, then later in southeast, perhaps severe gale 9 later in far southeast. Moderate or rough, but becoming very rough for a time in central areas, then later southeast. Occasional snow or wintry showers, mainly in east. Good, occasionally poor or very poor, mainly in east. Light icing developing in far northwest.

West Northern Section

In northwest

Cyclonic 5 to 7, occasionally gale 8 at first. Moderate or rough, becoming rough or very rough for a time. Occasional snow. Moderate or good, occasionally very poor. Light or moderate icing near ice edge in far northwest.

In northeast

Easterly or northeasterly 5 to 7, backing northerly 4 or 5 later. Moderate, occasionally rough. Snow showers, then fair. Good, occasionally moderate at first. Occasional light icing in far northeast.

Variable or cyclonic 3 or 4, increasing 5 at times. Mainly moderate. Occasional rain with sleet at times in north. Moderate or good, occasionally poor in north.

East Central Section

In northwestern half of area

Northeasterly backing northerly 4 or 5, increasing 6 or 7 later in northeast. Moderate or rough, becoming very rough later in far northeast. Showers, otherwise mainly fair. Good.

In southeastern half of area

Cyclonic at first in far southeast, otherwise northeasterly 5 to 7, backing northerly 4 or 5, but increasing 6 or 7 later in northeast. Moderate or rough, becoming very rough later in far northeast. Showers, mainly at first. Good.

West Central Section

In south

Northerly or northeasterly veering easterly or southeasterly 4 or 5, increasing 6 later in west. Moderate, occasionally rough. Mainly fair. Good.

In north

Variable, mainly easterly or northeasterly 3 or 4, occasionally 5 in south. Moderate. Mainly fair. Good.

Denmark Strait

In southwest

Northeasterly 5 to 7, backing northwesterly 4 or 5, but becoming variable 3 or 4 later near ice edge. Slight or moderate, becoming rough for a time in far south. Occasional snow at first. Moderate, occasionally very poor, becoming good. Light or moderate icing for a time with temperatures ms03 to ms06.

In rest of area

Northerly or northeasterly 5 to 7. Moderate, becoming rough or very rough in east. Snow showers. Good, occasionally poor. Light or moderate icing with temperatures ms03 to ms06.

North Iceland

In north

Northerly or northeasterly 5 to 7, occasionally gale 8 in far south. Moderate or rough, becoming rough or very rough. Occasional snow or snow showers. Moderate or good, occasionally poor. Moderate icing, except in far southeast with temperatures ms02 to ms05.

In south

Northerly or northeasterly 6 to gale 8, occasionally severe gale 9 in east. Rough or very rough, becoming very rough or high. Occasional sleet or snow. Moderate, occasionally very poor. Moderate, occasionally severe icing except in far east, becoming confined to west later, temperatures ms02 to ms05.

Norwegian Basin

Cyclonic, mainly northerly or northwesterly, backing westerly or southwesterly 6 to gale 8, occasionally severe gale 9 in west. Moderate or rough at first in east, otherwise rough or very rough, occasionally high in far west. Occasional rain, sleet or snow. Moderate or poor, occasionally good.

Outlook for following 24 hours

From Sun 26 Apr 2015

Gales or severe gales expected in all areas except Sole, West Northern Section and West Central Section.

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.