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High Seas forecast

High seas forecasts for the next 24 hours

Issued: 0800 on Fri 19 Dec 2014 UTC

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

Storm warnings

At 190000UTC, low 65 north 05 west 969 expected 66 north 09 east 976 by 200000UTC. Northeasterly winds will continue to reach storm force 10 or violent storm force 11 at times in the east of Denmark Strait until 191400UTC. Westerly winds may also reach storm force 10 at times in bailey and faeroes between 192000UTC and 200200UTC. New low expected 58 north 40 west 985 by same time. Northeasterly winds will reach storm force 10 or violent storm force 11 in the southwest of Denmark Strait after 200200UTC

General synopsis

At 190000UTC, low 65 north 05 west 969 expected 66 north 09 east 976 by 200000UTC. New low expected 58 north 40 west 985 by same time. High 77 north 18 west 1012 expected 73 north 32 west 1019 by that time. at 190000UTC, high 48 north 34 west 1027 expected 47 north 12 west 10134 by 200000UTC. Low 65 north 39 west 988 losing its identity

Sole

Southwesterly 7 at first in southeast, otherwise northwesterly 4 or 5, increasing 6 at times. Very rough. Rain then mainly fair. Moderate or poor, becoming good.

Shannon

Westerly 5 to 7, occasionally gale 8 in north. Very rough or high. Showers. Moderate or good.

Rockall

West 7 to severe gale 9. High or very high. Squally wintry showers. Moderate or good, occasionally poor.

Bailey

West 7 to severe gale 9, perhaps storm 10 later. High or very high. Squally wintry showers. Moderate or good, occasionally poor.

Faeroes

West 7 to severe gale 9, perhaps storm 10 later. High or very high. Squally wintry showers. Moderate or good, occasionally poor.

Southeast Iceland

Westerly or northwesterly 6 to gale 8, occasionally severe gale 9 in south, becoming variable 4 later in southwest. Very rough or high. Squally wintry showers. Moderate or good, occasionally poor.

East Northern Section

In far northwest

Westerly or northwesterly becoming cyclonic, 6 to gale 8, then becoming southeasterly 7 to severe gale 9 later. Rough or very rough, occasionally high. Squally wintry showers, then rain later. Moderate or good, becoming poor later.

In rest or area

Westerly or northwesterly, backing southerly or southwesterly later, 7 to severe gale 9, decreasing 5 or 6 for a time. High or very high, becoming very rough later. Squally wintry showers, then rain later in north and west. Moderate or good, becoming poor later in north and west.

West Northern Section

In far north

Variable 3 or 4 at first in west, otherwise cyclonic 5 to 7, increasing gale 8 at times, becoming mainly easterly or northeasterly 7 to severe gale 9 later. Rough or very rough, occasionally high. Sleet or snow showers, then rain or snow later. Good, occasionally poor, becoming moderate or poor, occasionally very poor later. Light icing expected later in far northwest.

In rest of area

Westerly 6 to gale 8, occasionally severe gale 9 at first, backing southerly or southwesterly 7 to severe gale 9, then becoming cyclonic 6 to gale 8 in northwest. Very rough or high. Occasional rain or sleet, with snow in northwest later. Moderate or good, occasionally poor, becoming poor or very poor later in northwest.

East Central Section

In north

Westerly backing southwesterly later, 5 to 7, increasing gale 8 at times. High or very high, becoming rough or very rough later. Mainly fair. Good, occasionally moderate.

In south

Southwesterly 5 or 6 at first in southeast, otherwise northerly 4 or 5, becoming variable 3 or 4, then becoming southerly or southwesterly 5 or 6 later. High at first in north, otherwise rough or very rough. Occasional rain or drizzle. Moderate or good, occasionally poor.

West Central Section

In north

Westerly 5 or 6, increasing 7 at times, backing southerly or southwesterly 6 to gale 8, occasionally severe gale 9 later in northwest. Rough or very rough, but high at first in east. Mainly fair, then occasional rain or drizzle. Moderate or good, occasionally poor.

In south

Variable 3 or 4 at first in east, otherwise southerly or southeasterly veering southwesterly later, 5 or 6, increasing 7 at times. Very rough becoming rough. Mainly fair, then occasional rain or drizzle. Moderate or good, occasionally poor.

Denmark Strait

In area east of 30 west

Easterly or northeasterly gale 8 to severe gale 9, decreasing 6 to gale 8, then decreasing 4 or 5 later in north. High, becoming rough or very rough later. Snow becoming mainly fair. Moderate or poor, occasionally very poor, becoming mainly good. Light or moderate icing within 150 miles of ice edge at first with temperatures ms02 to ms04.

In area west of 30 west

Mainly easterly or northeasterly 6 to gale 8, increasing severe gale 9 to violent storm 11 later. Moderate or rough, becoming very rough or high. Snow or snow showers. Moderate or poor, occasionally very poor. Light to moderate icing within 100 miles of ice edge with temperatures ms02 to ms05.

North Iceland

In southeast

Cyclonic 4 or 5, increasing 6 at times, becoming northerly or northwesterly 6 to gale 8, occasionally severe gale 9 later in far south. Very rough or high. Squally wintry showers. Moderate or good, occasionally poor.

In rest of area

Northerly or northeasterly, veering easterly later in southwest, 7 to severe gale 9, decreasing 5 or 6 later, then 3 or 4 in northwest. Very rough or high, becoming moderate or rough later in northwest. Snow showers in northeast, otherwise occasional rain or snow until later. Mainly good in northeast, otherwise moderate or poor, occasionally very poor, becoming good later. Light or moderate icing in north with temperatures ms02 to ms05, with severe icing possible at first in far northeast with temperatures ms07 to ms10.

Norwegian Basin

Westerly or southwesterly 5 or 6, increasing 7 at times, veering northerly or northwesterly 6 to gale 8, occasionally severe gale 9 later. Very rough or high. Wintry showers. Moderate or good.

Outlook for following 24 hours

From Sat 20 Dec 2014

Hurricane force winds are expected in the far northwest of West Northern Section and Denmark Strait, with violent storms in the rest of West Northern Section. Storms are expected in north Iceland with gales or severe gales in all other areas except Sole.

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.