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High Seas forecast

High seas forecasts for the next 24 hours

Issued: 2000 on Sun 02 Aug 2015 UTC

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

Storm warnings

At 021200UTC, low 53 north 20 west 984 expected 54 north 15 west 980 by 031200UTC. Southwesterly winds may reach storm force 10 in Shannon between 030600UTC and 031500UTC and southerly winds may reach storm force 10 in the southeast of Rockall after 030900UTC. Westerly or northwesterly winds will reach storm force 10 in the north of East Central Section until 031500UTC.

General synopsis

At 021200UTC, low 53 north 20 west 984 expected 54 north 15 west 980 by 031200UTC. New low moving eastwards, expected 44 north 35 west 1008 by same time. New high expected 66 north 06 east 1022 by that time

Sole

Southerly veering westerly 6 to gale 8, perhaps severe gale 9 later in west. Rough or very rough. Showers. Good.

Shannon

South 6 to gale 8, veering southwest 7 to severe gale 9, perhaps storm 10 later. Rough or very rough, becoming very rough or high. Rain or showers. Good, occasionally poor.

Rockall

Southeast 6 to gale 8, becoming cyclonic 7 to severe gale 9, perhaps storm 10 later. Rough or very rough, becoming very rough or high. Rain or showers. Good occasionally poor.

Bailey

Mainly east 5 to 7, perhaps gale 8 later. Moderate or rough, becoming rough or very rough in south. Rain. Good, occasionally poor.

Faeroes

Southeast 4 or 5, backing east 5 to 7. Slight or moderate, becoming moderate or rough. Fair then rain. Good, occasionally poor.

Southeast Iceland

Northeasterly 4 or 5, increasing 6 or 7. Moderate or rough. Showers. Good, occasionally poor.

East Northern Section

In northwest

Northeasterly backing northerly 4 or 5 in northwest, otherwise northeasterly 5 to 7. Slight or moderate, becoming rough in south and east. Mainly fair. Good.

In northeast

Mainly northeasterly 5 to 7, occasionally gale 8 later. Moderate becoming rough or very rough. Fair then occasional rain. Good, occasionally poor.

In south

Cyclonic in far southeast, otherwise northerly or northeasterly 6 to gale 8, occasionally severe gale 9 at first in south. Rough or very rough, becoming high for a time in southwest. Occasional rain or showers. Moderate or poor, occasionally good.

West Northern Section

Cyclonic mainly northwesterly at first in south, otherwise northerly or northeasterly, 4 or 5, increasing 6 at times. Moderate or rough. Occasional rain or showers. Good.

East Central Section

In northwest

Northwesterly gale 8 to storm 10, decreasing 5 to 7 later. Rough or very rough, becoming very rough or high. Rain. Moderate or poor, occasionally good.

In northeast

Cyclonic becoming westerly or northwesterly, 7 to severe gale 9, occasionally storm 10 until later, but mainly 5 or 6 at first in far northeast. Rough or very rough, becoming high in south. Rain or showers, fog patches for a time. Moderate or poor, occasionally very poor for a time.

In south

Westerly or northwesterly 5 to 7, increasing gale 8 or severe gale 9 in far northeast, but backing southeasterly 5 or 6 later in far southwest. Rough or very rough, becoming high in northeast. Showers in north, rain later in southwest. Good, occasionally poor.

West Central Section

In southeast

Northwesterly backing southeasterly 4 or 5, becoming cyclonic 5 to 7 later in south. Moderate or rough. Rain later. Good, becoming moderate or poor later.

In southwest

Southeasterly, becoming cyclonic later, 5 or 6, occasionally 7 later in far south. Moderate. Occasional rain. Moderate or good, occasionally poor.

In northwest

Northerly 4 or 5, becoming variable 3 or 4, then easterly 5 or 6 later in south. Moderate. Fair, then rain in southwest. Good, occasionally moderate in southwest, and poor at times in far northwest.

In northeast

Northwesterly 4 or 5, but 6 or 7 until later in far east. Moderate or rough. Mainly fair. Good.

Denmark Strait

Northerly or northeasterly 4 or 5, occasionally 6 at first in far south, becoming variable 3 or 4 at times, except in southeast. Moderate or rough at first in south, otherwise slight or moderate. Occasional drizzle with fog patches. Moderate or good, occasionally very poor.

North Iceland

Variable, mainly northerly or northeasterly 3 or 4, becoming easterly or northeasterly 5 or 6 later in southeast. Slight or moderate. Occasional rain or drizzle with fog patches, but fog banks for a time in southeast. Moderate or good, occasionally very poor.

Norwegian Basin

Variable 3 or 4, becoming easterly 5 or 6, occasionally 7 later in south. Slight or moderate, becoming moderate or rough later in far south. Fair then occasional rain. Poor at first in northwest, otherwise good, occasionally moderate.

Outlook for following 24 hours

From Mon 03 Aug 2015

Severe gales expected in Sole, Shannon, Rockall and East Central Section with gales in Bailey, Southeast Iceland and East Northern 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.