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High Seas forecast

High seas forecasts for the next 24 hours

Issued: 2000 on Thu 26 Feb 2015 UTC

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

Storm warnings

At 261200UTC, low 63 north 18 west 949 expected 67 north 07 west 968 by 271200UTC. Winds will reach storm force 10 at times in Bailey, Faeroes, Southeast Iceland and the northeast of East Northern Section until 270300UTC, in the east of Denmark Strait until 270900UTC, and in the east of Norwegian Basin from 270600UTC until 271500UTC. Low 48 north 46 west 995 expected 59 north 31 west 963 by same time. Winds will reach storm force 10 or violent storm force 11 in the far south of West Northern Section and the far north of West Central Section after 262300UTC, becoming confined to the far southeast of West Northern Section by 272000UTC. Winds will also reach storm force 10 or violent storm force 11 in the southwest of East Northern Section after 270800UTC

General synopsis

At 261200UTC, low 63 north 18 west 949 expected 67 north 07 west 968 by 271200UTC. Low 48 north 46 west 995 expected 59 north 31 west 963 by same time. Low 52 north 55 west 982 losing its identity near 56 north 41 west by that time. at 261200UTC, low 35 north 74 west 994 expected 45 north 49 west 998 by 271200UTC. High 47 north 23 west 1035 dissipating

Sole

Northwesterly backing southwesterly 5 to 7, perhaps gale 8 later. Very rough or high. Showers then rain. Good, becoming moderate or poor.

Shannon

West or southwest 6 to gale 8. High or very high, becoming very rough or high. Rain or showers. Good, occasionally poor.

Rockall

West or southwest 6 to gale 8, occasionally severe gale 9. High or very high, becoming very rough or high. Rain or showers. Good, occasionally poor.

Bailey

West severe gale 9 to violent storm 11 backing south or southwest 7 to severe gale 9. Very high or phenomenal, becoming very rough or high. Rain or showers. Moderate, occasionally poor.

Faeroes

Westerly or southwesterly gale 8 to storm 10, backing southeasterly 6 to gale 8. High or very high, becoming very rough or high. Rain or showers. Moderate occasionally poor.

Southeast Iceland

Westerly or southwesterly gale 8 to storm 10, backing southeasterly 6 to gale 8. High or very high, becoming very rough or high. Rain or showers. Moderate occasionally poor.

East Northern Section

In northeast

Northwesterly gale 8 to storm 10 becoming cyclonic, but mainly northeasterly in northwest and southwesterly in southeast, 7 to severe gale 9. High or very high, but phenomenal in southeast at first and becoming rough or very rough in north. Rain, sleet or squally showers. Moderate or poor, occasionally good.

In southwest

Westerly 5 to 7, but gale 8 or severe gale 9 in north and east at first, becoming cyclonic, but mainly northerly or northeasterly in north and westerly or southwesterly in south, 7 to severe gale 9, increasing severe gale 9 or storm 10 in south later. High or very high, but phenomenal in east at first. Rain or squally showers. Moderate or poor, occasionally good.

West Northern Section

In north

Westerly or southwesterly backing southeasterly then northerly or northeasterly, 5 to 7, occasionally gale 8 in east. Rough or very rough, but high in east at first and becoming moderate in far northwest. Snow or wintry showers. Moderate or poor occasionally good. Occasional light or moderate icing in far northwest.

In south

Southwesterly 5 or 6 in north and east at first otherwise easterly or southeasterly becoming cyclonic then westerly or northwesterly, 7 to severe gale 9, increasing severe gale 9 to violent storm 11 for a time in south. Rough or very rough in southwest at first and in far west later, otherwise high or very high. Rain, snow or squally showers. Moderate or poor, occasionally good.

East Central Section

Variable 4 in southeast at first and westerly or southwesterly 6 to gale 8 in north and northeast, otherwise southerly or southeasterly veering westerly or southwesterly, 7 to severe gale 9. Rough or very rough in far south otherwise mainly high or very high. Rain or showers in north, occasional rain in south. Good at times in north, otherwise moderate or poor.

West Central Section

In north

Southeasterly in north and east at first otherwise westerly or southwesterly 7 to severe gale 9, increasing severe gale 9 to violent storm 11 for a time in far north. Very rough or high, becoming very high for a time in north. Rain, snow or squally showers. Moderate or poor, occasionally good.

In south

Westerly or southwesterly, becoming cyclonic in north later, 7 to severe gale 9. Very rough or high. Rain. Moderate or poor.

Denmark Strait

In west

Variable 4 becoming northeasterly 5 to 7. Moderate or rough in west, very rough or high in east. Occasional snow or snow showers. Good, becoming poor or very poor in snow. Moderate to severe icing developing with temperatures ms02 to ms05, but ms06 to ms10 near ice edge.

In east

Northerly or northeasterly 7 to severe gale 9, occasionally storm 10 in east at first. High or very high, becoming rough or very rough. Snow. Poor or very poor, occasionally moderate. Severe or very severe icing with temperatures ms02 to ms05 but ms06 to ms10 near ice edge.

North Iceland

In north and far west

Northerly or northeasterly 7 to severe gale 9, occasionally storm 10 at first. Very rough or high. Snow. Poor or very poor, occasionally moderate. Severe or very severe icing with temperatures ms02 to ms05 but ms06 to ms10 near ice edge.

In rest of area

Cyclonic, but mainly southeasterly at first and northerly later, 5 to 7, but gale 8 or severe gale 9 in far southeast at first. Very rough or high becoming rough or very rough, but very high at first in far southeast. Rain or showers. Moderate or poor, occasionally good.

Norwegian Basin

Southwesterly 7 to severe gale 9, occasionally storm 10 in east. Very rough or high, becoming high or very high for a time. Squally wintry showers. Moderate occasionally poor.

Outlook for following 24 hours

From Fri 27 Feb 2015

Storms expected in Bailey, East Northern Section and Norwegian Basin. Severe gales, with a risk of storms, expected in Shannon, Rockall, Faeroes and East Central Section. Gales or severe gales expected in Sole, Southeast Iceland, West Northern Section, West Central Section, Denmark Strait 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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