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High Seas forecast

High seas forecasts for the next 24 hours

Issued: 0800 on Tue 21 Oct 2014 UTC

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

Storm warnings

At 210000UTC, low 57 north 08 west 981 expected 56 north 06 east 992 by 220000UTC. Northwesterly winds will reach storm force 10 in Rockall and Bailey until 211000UTC and in Faeroes until 211300UTC. Low 68 north 12 west 969 expected 70 north 11 west 983 by same time. Northerly or northwesterly winds will reach storm force 10 in the far east of denmark strait until 211200UTC and in the west of sea area north Iceland until 211900UTC

General synopsis

At 210000UTC, low 57 north 08 west 981 expected 56 north 06 east 992 by 220000UTC. Low 68 north 12 west 969 expected 70 north 11 west 983 by same time. Low 55 north 56 west 973 expected 62 north 37 west 985 by that time. at 210000UTC, high 48 north 30 west 1026 expected 46 north 10 west 1033 by 220000UTC

Sole

Northwesterly 5 to 7, occasionally gale 8, backing southwesterly 4 or 5. Rough or very rough. Fair. Good.

Shannon

Northwest 7 to severe gale 9, backing west 5 or 6. Rough or very rough, occasionally high. Squally showers. Moderate or good, occasionally poor.

Rockall

Northwesterly gale 8 to storm 10, decreasing 5 to 7, backing southwesterly later. Very rough or high. Rain or squally showers. Moderate or good, occasionally poor.

Bailey

Northwesterly gale 8 to storm 10, decreasing 5 to 7, backing southwesterly later. Very rough or high. Rain or squally showers. Moderate or good, occasionally poor.

Faeroes

Northwesterly gale 8 to storm 10, decreasing 5 to 7, backing southwesterly later. Very rough or high. Rain or squally showers. Moderate or good, occasionally poor.

Southeast Iceland

Northwesterly 7 to severe gale 9, decreasing 5 or 6, backing southerly later. Rough or very rough. Showers. Moderate or good.

East Northern Section

In far northwest

Northerly or northwesterly 4 or 5, becoming variable 4, then becoming easterly 6 to gale 8 later. Moderate or rough. Wintry showers becoming fair, then rain later. Good, becoming moderate or poor later.

In rest of area

Westerly backing southwesterly, 5 to 7, increasing gale 8 at times. Rough or very rough, occasionally high in south. Showers becoming fair, then rain at times. Good, becoming moderate or poor.

West Northern Section

In north

Westerly 5 or 6, becoming variable 3 or 4, then becoming cyclonic 6 to gale 8. Rough or very rough. Fair then rain, except in far northwest. Good, becoming moderate or poor, except in far northwest.

In south

Southerly or southeasterly 5 to 7, veering southwesterly 6 to gale 8. Very rough or high. Rain at times. Moderate or good, occasionally poor.

East Central Section

In north

Westerly or northwesterly backing southwesterly, 5 to 7, occasionally gale 8 later. Very rough or high. Fair, then occasional rain. Good becoming moderate, occasionally poor.

In southeast

Northerly or northeasterly 4 or 5, becoming variable then southerly, 3 or 4. Rough, occasionally very rough later. Fair. Moderate or good.

In southwest

Variable 3 or 4, becoming southwesterly 4 or 5. Rough. Mainly fair. Moderate or good.

West Central Section

In southeast

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

In northwest

Southerly veering westerly 5 to 7, occasionally gale 8 in north. Rough or very rough, becoming very rough or high. Rain at times, showers later. Moderate or poor, becoming good.

Denmark Strait

In far east

Northerly gale 8 to storm 10, backing northwesterly 4 or 5 in north, becoming variable 3 or 4 then easterly 4 or 5 later in south. Very rough or high, becoming rough. Snow or snow showers, becoming fair. Moderate to very poor, becoming good. Light or moderate icing until later with temperatures ms03 to ms06.

In rest of region

Variable 3 or 4, becoming easterly or northeasterly 5 to 7 later. Rough or very rough, becoming moderate or rough. Fair, but rain later in far south. Moderate or good.

North Iceland

In west

Northerly or northwesterly gale 8 to storm 10, decreasing 5 to 7, becoming variable 3 or 4 in southwest later. Very rough or high, becoming rough later. Sleet or snow, becoming fair in south. Moderate to very poor, becoming good in south. Light or moderate icing with temperatures ms02 to ms05, becoming moderate or severe icing near ice edge in north, with temperatures ms04 to ms07.

In east

Cyclonic 5 to 7, but mainly westerly 7 to severe gale 9 in south. Rough or very rough. Rain, sleet or wintry showers, with fog patches in north. Moderate or poor, occasionally very poor in north.

Norwegian Basin

In west

Cyclonic 5 to 7, becoming northwesterly 7 to severe gale 9, backing westerly 5 or 6 later. Rough, becoming very rough. Rain, then wintry showers. Moderate or poor, occasionally good later.

In east

Southerly or southeasterly 5 to 7, increasing gale 8 or severe gale 9 in northeast, veering northwesterly 6 to gale 8 in west. Moderate or rough. Rain, but fair for a time in northeast. Moderate or good, occasionally poor.

Outlook for following 24 hours

From Wed 22 Oct 2014

Severe gales expected in West Northern Section and Norwegian Basin. Gales expected in Rockall, Bailey, Faeroes, Southeast Iceland, East Northern Section, East Central Section, West Central Section and north 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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