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amber Warnings have been issued for the United Kingdom

High Seas forecast

Issued at 0800 UTC on Thursday 23 February 2017
by the Met Office, Exeter, United Kingdom
for the period 0800 UTC Thursday 23 February until 0800 UTC Friday 24 February 2017

General synopsis

At 230000UTC, low 54 north 12 west 981 expected 55 north 17 east 976 by 240000UTC. Low 64 north 30 west 976 expected 66 north 32 west 984 by same time. Low 41 north 52 west 989 expected 56 north 35 west 980 by that time. at 230000UTC, low 36 north 53 west 989 expected 48 north 40 west 985 by 240000UTC. Low 62 north 20 east 965 expected 64 north 26 east 970 by same time. High 76 north 20 west 1021 slow moving declining 1017 by that time. New high expected 45 north 17 west 1025 by 240000UTC

Area forecasts for the next 24 hours

Sole

Northwesterly 6 to gale 8, backing westerly 4. Rough or very rough, occasionally high at first. Rain at first. Poor becoming good.

Shannon

Cyclonic severe gale 9 to violent storm 11, becoming northwest 5 to 7. Rough or very rough, occasionally high. Squally showers. Good occasionally poor.

Rockall

Cyclonic severe gale 9 to violent storm 11, becoming northwest 5 to 7. Rough or very rough, occasionally high. Squally showers. Good occasionally poor.

Bailey

Northwest 6 to gale 8, backing south 4 or 5 later. Rough occasionally very rough. Showers. Good.

Faeroes

North or northeast 5 or 6. Moderate or rough, occasionally very rough. Snow showers. Good occasionally poor.

Southeast Iceland

Easterly 6 to gale 8. Rough occasionally very rough. Snow showers. Good occasionally poor.

East Northern Section

Westerly, backing southerly 6 to gale 8, becoming cy later in far west. Rough or very rough. Occasional rain or snow. Moderate or poor, occasionally very poor.

West Northern Section

In north

Cyclonic 6 to gale 8, occasionally severe gale 9 at first in east, becoming variable 3 or 4. Rough or very rough, becoming slight or moderate in west. Snow showers, sleet later in east. Good occasionally poor. Light icing at first.

In south

Westerly 5 to 7, occasionally gale 8 at first, becoming cyclonic, 5 to 7, occasionally gale 8 later in east. Rough or very rough. Occasional rain or snow. Moderate or poor, occasionally very poor. Light icing later in far west.

East Central Section

In northeast

Northwesterly 7 to severe gale 9, backing westerly 5 to 7 later, occasionally gale 8 later. Rough or very rough. Wintry showers. Good occasionally moderate.

In southeast

Northwesterly, backing southwesterly later, 4 or 5, occasionally 6 later. Moderate or rough, occasionally very rough at first. Fair. Moderate or good.

In southwest

Variable 3 or 4, becoming southerly or southwesterly 5 or 6, occasionally 7 later. Moderate or rough. Fair then occasional drizzle. Moderate or good, occasionally poor.

In northwest

Westerly 5 or 6, backing southerly 5 to 7, occasionally gale 8 later. Rough or very rough. Wintry showers, rain and drizzle later. Good becoming moderate, occasionally poor later.

West Central Section

Southerly or southeasterly 5 to 7, becoming cyclonic 6 to gale 8, occasionally severe gale 9 later in south. Rough or very rough, occasionally high later in far south. Rain or showers. Moderate or good, occasionally poor.

Denmark Strait

Cyclonic 7 to severe gale 9, decreasing 5 or 6, but becoming variable 3 or 4 later in southwest. Rough or very rough, becoming moderate later in southwest. Occasional snow. Moderate, occasionally very poor. Moderate or severe icing within 100 miles of ice shelf for a time with temperatures ms04 to ms07.

North Iceland

In northwest

Northerly becoming cyclonic later 4 or 5, increasing 6 at times. Rough becoming moderate, occasionally slight later. Fair. Good.

In southwest

Easterly 6 to gale 8, veering southeasterly 7 to severe gale 9. Rough or very rough. Fair. Good.

In east

Northerly or northeasterly 4 or 5, occasionally 6 at first, becoming variable 3 or 4. Rough or very rough, becoming moderate in north. Fair. Good. Light icing at first in north with temperatures around ms02.

Norwegian Basin

Northerly 5 to 7, occasionally gale 8 in east. Rough or very rough. Snow showers. Good occasionally poor.

Outlook for following 24 hours

Storms expected in Bailey, Faeroes, Southeast Iceland, East Northern Section, West Northern Section, Denmark Strait, north Iceland and Norwegian Basin. Gales or severe gales expected in remaining areas.

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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