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High Seas forecast

Issued at 2000 UTC on Monday 16 January 2017
by the Met Office, Exeter, United Kingdom
for the period 2000 UTC Monday 16 January until 2000 UTC Tuesday 17 January 2017

Storm warnings

At 161200UTC, low 48 north 47 west 1001 expected 55 north 36 west 995 by 171200UTC. Winds are expected to reach storm force 10 between 30 and 150 miles of the centre in the southwestern quadrant between 170300UTC and 170900UTC. Low 79 north 20 west 961 moving steadily away northeastwards by same time. Southwesterly winds are expected to reach storm force 10 to the north of 67 north in north iceland until 170300UTC

General synopsis

At 161200UTC, low 48 north 47 west 1001 expected 55 north 36 west 995 by 171200UTC. Low 79 north 20 west 961 moving steadily away northeastwards by same time. Low 44 north 33 west 997 expected 58 north 24 west 995 by that time

Area forecasts for the next 24 hours

Sole

In west, southwesterly, backing southerly, 4 or 5. in east, northwesterly 5, becoming variable 4. In west, moderate or rough. in east, slight or moderate. In west, fair. in east, occasional drizzle. In west, good. in east, moderate or good, occasionally poor.

Shannon

Southwesterly 5 or 6. Moderate or rough. Fair. Good.

Rockall

Southwest 5 or 6, backing south 6 to gale 8 later. Rough or very rough. Occasional rain, fog patches at first. Moderate or good, occasionally very poor at first.

Bailey

Cyclonic, mainly southwesterly, 5 or 6, increasing 7 or gale 8 later, perhaps severe gale 9 later. Rough or very rough, occasionally high later in west. Rain, fog patches. Moderate, occasionally very poor.

Faeroes

Southwest 5 or 6, occasionally 7 later. Moderate or rough, occasionally very rough later. Rain, fog patches. Moderate, occasionally very poor.

Southeast Iceland

Southwesterly, becoming cyclonic later, 6 to gale 8. Rough or very rough. Wintry showers, rain or snow later. Moderate or good, occasionally very poor.

East Northern Section

In northwest

Southwesterly 6 to gale 8, becoming cyclonic later, then northwesterly, 5 or 6. Very rough or high, becoming rough or very rough later. Snow showers, then rain and snow later. Moderate or good, occasionally very poor.

In northeast

Southwesterly 5 or 6, becoming variable 3 or 4, then becoming cyclonic 6 to gale 8 later, perhaps severe gale 9 later. Rough or very rough, occasionally high later. Wintry showers, rain and snow later, perhaps thundery at times. Good, occasionally poor, becoming poor or very poor later.

In south

Cyclonic 5 or 6, increasing 7 to severe gale 9, then becoming southwesterly later. Rough or very rough, becoming very rough or high later. Rain, thundery for a time. Moderate or good, occasionally poor.

West Northern Section

In north

Westerly or southwesterly 6 to gale 8, decreasing 4 or 5 later in south. Rough or very rough, occasionally high at first in east. Occasional snow or snow showers. Moderate or good, occasionally very poor. Light or moderate icing in north, occasionally severe in northwest.

In south

Southwesterly, becoming cyclonic, 5 to 7, increasing gale 8 for a time in far south. Rough or very rough. Snow showers, then rain and snow. Moderate or good, occasionally very poor.

East Central Section

In far southeast

Southerly 5 or 6. Moderate or rough. Fair. Good.

In rest of area

Southerly, but cyclonic in far northwest, 6 to gale 8, increasing severe gale 9 at times, becoming variable 3 or 4 later in far southwest. Rough or very rough, occasionally high. Occasional rain, thundery at first in northwest. Moderate or good, occasionally poor.

West Central Section

Cyclonic 6 to gale 8, increasing severe gale 9 at times, occasionally westerly storm 10 for a time in northwest. Rough or very rough, occasionally high in southeast. Occasional rain, thundery at times, turning to snow in far northwest. Moderate or good, occasionally poor, but becoming very poor at times in far northwest.

Denmark Strait

Southwesterly 6 to gale 8, occasionally severe gale 9 at first, decreasing 4 or 5 later in east. Very rough or high, becoming rough or very rough later. Occasional snow. Moderate or good, occasionally very poor. Light or moderate icing with temperatures ms02 to m05, occasional severe icing in far southwest with temperatures ms05 to ms07.

North Iceland

In extreme south

Southwesterly, becoming cyclonic later, 5 to 7. Rough or very rough. Wintry showers, rain and snow later. Good, occasionally poor, becoming poor or very poor later.

In rest of area

Southwesterly 7 to severe gale 9, occasionally storm 10 at first north of 67 north, veering westerly 5 or 6 later. Very rough or high, occasionally very high at first, becoming rough or very rough later. Occasional snow or snow showers. Moderate or good, occasionally very poor. Light or moderate icing in north and west with temperatures ms02 to ms05, severe of very severe icing developing in far north with temperatures ms10 to ms14.

Norwegian Basin

In west

Southwesterly 5 or 6, occasionally 7 later. Rough or very rough. Showers, rain later. Good, becoming moderate or poor later.

In east

Southerly or southwesterly 7 to severe gale 9, decreasing 5 or 6 later. Rough or very rough. Occasional rain. Moderate or good, occasionally poor.

Outlook for following 24 hours

Storms expected in West Central Section and Norwegian Basin. Gales or severe gales expected in all other areas except Sole and Shannon.

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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