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High Seas forecast

High seas forecasts for the next 24 hours

Issued: 0800 on Sat 30 May 2015 UTC

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

Storm warnings

At 300000UTC, low 61 north 41 west 981 expected 61 north 35 west 983 by 310000UTC. Northeasterly winds are expected to reach storm force 10 in the far northwest of the West Northern Section and the far west of Denmark Strait until 301800UTC. Westerly winds are expected to reach storm force 10 in the southeast of the West Northern Section until 301800UTC. New low expected 58 north 14 west 991 by 310000UTC. Northwesterly winds may reach storm force 10 in the southeast of the East Northern Section from 301800UTC. Westerly or northwesterly winds may reach storm force 10 in the north of Rockall from 302100UTC

General synopsis

At 300000UTC, low 61 north 41 west 981 expected 61 north 35 west 983 by 310000UTC. New low expected 58 north 14 west 991 by same time. Lows 60 north 02 west 998 and 66 north 09 east both losing their identities by that time. at 300000UTC, high 48 north 50 west 1029 expected 44 north 37 west 1029 by 310000UTC

Sole

Southwesterly 5 or 6, veering northwesterly 6 or 7 later. Moderate, becoming rough later in west. Rain. Good, occasionally poor.

Shannon

Southeast veering southwest 5 or 6, veering northwest 6 or 7 perhaps gale 8 later. Moderate, becoming rough or very rough. Rain, showers later. Good, occasionally poor.

Rockall

Southeasterly 5, increasing 6 to gale 8, veering northwesterly gale 8 or severe gale 9 later, perhaps storm 10 in north. Moderate, becoming rough or very rough, occasionally high in north later. Rain, showers later. Good occasionally poor.

Bailey

Variable 4, becoming southeasterly 5 or 6, backing easterly 7 or gale 8 perhaps severe gale 9 later in south. Moderate, becoming rough or very rough later. Rain later. Good, occasionally poor later.

Faeroes

Northerly 4 or 5, veering easterly 5 to 7. Slight or moderate. Showers. Good.

Southeast Iceland

Northerly 4 or 5, veering easterly 5 to 7, perhaps gale 8 later in west. Slight or moderate, occasionally rough later in west. Showers. Good.

East Northern Section

In north

Southeasterly backing easterly, becoming cyclonic in south later, 6 to gale 8, occasionally severe gale 9 for a time in west. Rough or very rough. Occasional rain. Moderate or good, occasionally poor.

In south

Cyclonic 6 to gale 8, becoming northwesterly 7 to severe gale 9, occasionally storm 10 in east later, then backing westerly 6 to gale 8 later. Very rough or high, becoming rough or very rough. Rain then showers. Moderate or poor, becoming good.

West Northern Section

In north

cyclonic 7 to severe gale 9, but northeasterly in far northwest occasionally storm 10 for a time. Rough or very rough. Occasionally high for a time. Occasional rain, with snow in far northwest. Moderate or poor, occasionally very poor in far northwest.

In south

Westerly or southwesterly 7 to severe gale 9, occasionally storm 10 for a time in west. Very rough or high. Occasional rain. Moderate or poor.

East Central Section

In north

cyclonic becoming westerly or northwesterly 6 to gale 8. Moderate or rough, becoming very rough or high. Rain then showers. Moderate or poor, becoming good.

In south

Westerly or southwesterly, veering northwesterly 5 or 6. Moderate or rough, occasionally very rough in northwest later. Rain then showers. Moderate or poor, becoming good.

West Central Section

In south

Westerly or northwesterly, backing southwesterly in west later, 5 to 7. Moderate or rough, becoming very rough in north later. Rain for a time. Moderate or poor, becoming good.

In north

Westerly or northwesterly, 6 to gale 8, occasionally severe gale 9 for a time in north. Rough or very rough, becoming very rough or high. Occasional rain. Moderate or good, occasionally poor.

Denmark Strait

In west

Easterly or northeasterly 7 to severe gale 9, occasionally storm 10 for a time in far west. Rough or very rough. Occasional snow. Moderate or poor, occasionally very poor.

In east

Easterly or northeasterly 5 or 6, increasing 7 or gale 8 later. Moderate becoming rough or very rough later. Occasional rain or snow for a time. Moderate occasionally very poor, becoming good.

North Iceland

In northwest

Variable 3 or 4, becoming northeasterly 4 or 5 in south later. Smooth or slight. Occasionally snow. Moderate or good occasionally very poor.

In far southwest

Easterly 4 or 5, increasing 6 or 7. Slight or moderate. Occasional rain. Moderate or good, occasionally poor.

In east

Northerly veering northeasterly 4 or 5. Slight or moderate. Occasional rain with snow in north, fog patches in south later. Moderate or poor occasionally very poor.

Norwegian Basin

In west

Northerly veering northeasterly 4 or 5. Slight or moderate. Occasional rain. Moderate or good, occasionally poor.

In east

southwesterly 4 or 5, becoming variable 3 or 4, then becoming northerly or northeasterly 4 or 5. Slight or moderate. Occasional rain. Moderate or good, occasionally poor.

Outlook for following 24 hours

From Sun 31 May 2015

Risk of storms in Rockall and East Northern Section. Severe gales expected in Bailey, West Northern Section and Denmark Strait. Gales expected in Shannon, Southeast Iceland, East Central 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.