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High seas forecast

Issued at 0800 UTC on Friday 20 April 2018
by the Met Office, Exeter, United Kingdom
for the period 0800 UTC Friday 20 April until 0800 UTC Saturday 21 April 2018

General synopsis

At 200000UTC, low 49 north 38 west 1006 expected 57 north 24 west 997 by 210000UTC. Low 69 north 00 east 996 expected 69 north 03 east 991 by same time. Lows 53 north 50 west 993, 62 north 33 west 1002 and 63 north 12 west 1005 all losing their identities. New highs expected 69 north 37 west 1021 and 54 north 04 west 1025 by 210000UTC

Area forecasts for the next 24 hours

Sole

Variable 3 or 4, becoming northerly 4 or 5 for a time in east. Rough, becoming moderate. Fog patches in east. Moderate or good, occasionally very poor in east.

Shannon

Variable 3 or 4, becoming south 5 or 6 later. Moderate, occasionally rough. Rain later. Good, occasionally moderate.

Rockall

South or southwest 5 or 6, occasionally 7 later. Moderate or rough. Showers, rain later. Good, occasionally moderate.

Bailey

South or southwest 5 or 6. Moderate or rough. Showers, rain later. Good, occasionally moderate.

Faeroes

Southwest 4 or 5, occasionally 6 at first. Moderate or rough. Showers. Good.

Southeast Iceland

Cyclonic 5 or 6, becoming variable 3 or 4. Moderate or rough. Occasional rain. Moderate or good.

East Northern Section

In north

Variable 3 or 4, becoming easterly 5 to 7 later. Moderate or rough. Occasional rain. Moderate or good, occasionally poor later in south.

In south

Southerly or southwesterly 4 or 5, becoming cyclonic 5 to 7, occasionally gale 8 later. Rough, occasionally very rough later. Moderate or good, occasionally poor.

West Northern Section

In far northwest

Northeasterly 5 or 6. Rough becoming moderate. Occasional rain or sleet. Moderate or good.

In rest of area

Cyclonic 5 or 6, occasionally 7 later in southeast. Rough, occasionally moderate. Moderate or good, occasionally poor in southeast.

East Central Section

In far northwest

Southerly 5 or 6, becoming cyclonic 7 to severe gale 9, then southwesterly 5 to 7 later. Rough, occasionally very rough. Rain at times. Moderate or good, occasionally poor.

In far southeast

Variable 3 or 4. Rough becoming moderate. Drizzle later. Good, occasionally moderate.

In rest of area

Southerly or southwesterly 5 to 7, occasionally gale 8 in north. Rough, occasionally very rough. Rain at times. Moderate or good, occasionally poor.

West Central Section

In north

Cyclonic 5 to 7, occasionally gale 8 in southeast, becoming westerly 5 or 6. Rough, occasionally very rough. Rain at times, moderate or good, occasionally poor at first.

In south

Westerly or southwesterly 5 to 7, occasionally gale 8 at first in northeast. Rough, becoming very rough for a time in far northwest. Moderate or good, occasionally poor.

Denmark Strait

Northerly or northeasterly 5 or 6, occasionally 7 at first. Moderate, occasionally rough at first. Occasional rain in southeast, but occasional sleet or snow in northwest. Moderate or good, occasionally poor in northwest. Occasional light icing at first near ice edge, with temperature ms02 or ms03.

North Iceland

Northerly or northwesterly 5 to 7, becoming variable 3 or 4 later in southwest. Moderate or rough. Occasional rain in southeast, but occasional snow in northwest. Moderate or good, occasionally poor in northwest. Light, occasional moderate at first, icing near ice edge, with temperatures ms03 to ms06.

Norwegian Basin

Southwesterly veering westerly 5 to 7, occasionally gale 8 in north. Moderate or rough in south, but rough or very rough in north. Occasional rain. Moderate or good.

Outlook for following 24 hours

Gales expected in Southeast Iceland, both northern sections and Norwegian Basin.

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

High seas forecast and storm warnings

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.

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