Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 210000UTC, low 54 north 39 west 959 expected 57 north 31 west 970 by 220000UTC. New high expected 72 north 17 west 1017 by same time

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
Southwest 4 to 6, occasionally 7 until later.
Sea state
Rough or very rough.
Weather
Occasional rain, fog patches.
Visibility
Moderate or good, occasionally very poor.

Shannon

Wind
Southwesterly 5 to 7, perhaps gale 8 later.
Sea state
Very rough, occasionally high later in northwest.
Weather
Rain then showers.
Visibility
Good, occasionally poor.

Rockall

Wind
Cyclonic becoming mainly southwest, 5 to 7, occasionally 4 at first, perhaps gale 8 later.
Sea state
Very rough, occasionally high later.
Weather
Rain or squally showers.
Visibility
Good, occasionally poor.

Bailey

Wind
East 4 to 6 becoming cyclonic 6 to gale 8, occasionally 5 later.
Sea state
Very rough.
Weather
Rain or squally showers.
Visibility
Good, occasionally poor.

Faeroes

Wind
North or northeast 3 to 5, veering southeast, then becoming cyclonic later, 5 to 7, perhaps gale 8 later.
Sea state
Moderate or rough, occasionally very rough.
Weather
Fair then rain.
Visibility
Good, occasionally poor.

Southeast Iceland

Wind
Northeasterly 4 or 5, veering easterly 6 to gale 8.
Sea state
Rough occasionally very rough.
Weather
Wintry showers.
Visibility
Good, occasionally poor.

East Northern Section

High seas storm warning
Issued:

At 210000UTC, low 54 north 39 west 959 expected 57 north 31 west 970 by 220000UTC. Winds are expected to reach storm force 10 between 200 and 450 miles of the centre in the northern quadrant until 212200UTC and between 150 and 300 miles of the centre in the northwestern quadrant from 211200UTC until 212200UTC. Easterly winds are also expected to reach storm force 10 in area enclosed between 60 and 63 north and west of 19 west in East Northern Section until 212200UTC. Finally, winds are expected to reach storm force 10 between 200 and 350 miles of the centre in the southern quadrant from 211500UTC.

In north

Wind
Easterly 7 to severe gale 9, occasionally 6 in far north and storm 10 until later in south, becoming cyclonic 4 to 6 in far south.
Sea state
Very rough or high, occasionally rough in north.
Weather
Mainly fair at first except in far south, otherwise rain at times, then showers in south.
Visibility
Moderate or poor, occasionally good.

In south

Wind
Easterly gale 8 to storm 10 at first in far north, otherwise cyclonic 6 to gale 8, occasionally severe gale 9 later in south.
Sea state
Very rough or high, occasionally very high later in far south.
Weather
Rain at first in north and east, otherwise squally showers.
Visibility
Moderate or poor.

West Northern Section

High seas storm warning
Issued:

At 210000UTC, low 54 north 39 west 959 expected 57 north 31 west 970 by 220000UTC. Winds are expected to reach storm force 10 between 200 and 450 miles of the centre in the northern quadrant until 212200UTC and between 150 and 300 miles of the centre in the northwestern quadrant from 211200UTC until 212200UTC. Easterly winds are also expected to reach storm force 10 in area enclosed between 60 and 63 north and west of 19 west in East Northern Section until 212200UTC. Finally, winds are expected to reach storm force 10 between 200 and 350 miles of the centre in the southern quadrant from 211500UTC.

In north

Wind
Northeasterly, 5 to 7 at first in north, otherwise gale 8 to storm 10, backing northerly or northeasterly 6 to gale 8 later, and decreasing 4 to 6 later in southeast.
Sea state
Very rough or high, occasionally rough in far north.
Weather
Snow showers in northwest, otherwise occasional rain or squally showers.
Visibility
Moderate or good, occasionally poor. Moderate or severe icing developing in far northwest.

In south

Wind
Northeasterly gale 8 to storm 10 until later in northwest, otherwise cyclonic 6 to gale 8, decreasing 5 at times mainly in south and east.
Sea state
Very rough or high.
Weather
Occasional rain or squally showers.
Visibility
Moderate or poor.

East Central Section

High seas storm warning
Issued:

At 210000UTC, low 54 north 39 west 959 expected 57 north 31 west 970 by 220000UTC. Winds are expected to reach storm force 10 between 200 and 450 miles of the centre in the northern quadrant until 212200UTC and between 150 and 300 miles of the centre in the northwestern quadrant from 211200UTC until 212200UTC. Easterly winds are also expected to reach storm force 10 in area enclosed between 60 and 63 north and west of 19 west in East Northern Section until 212200UTC. Finally, winds are expected to reach storm force 10 between 200 and 350 miles of the centre in the southern quadrant from 211500UTC.

In north

Wind
Southwesterly 6 to gale 8, occasionally severe gale 9 in west, increasing gale 8 to storm 10 later in west.
Sea state
Very rough or high, becoming very high at times in west.
Weather
Rain at first in far east, otherwise squally showers.
Visibility
Moderate or poor.

In south

Wind
Southwesterly 5 to 7, occasionally gale 8 in northwest and 4 in south.
Sea state
Very rough, occasionally high in north and east.
Weather
Rain at first in east, otherwise showers, squally at times.
Visibility
Moderate or poor at first in east, otherwise good, occasionally poor.

West Central Section

High seas storm warning
Issued:

At 210000UTC, low 54 north 39 west 959 expected 57 north 31 west 970 by 220000UTC. Winds are expected to reach storm force 10 between 200 and 450 miles of the centre in the northern quadrant until 212200UTC and between 150 and 300 miles of the centre in the northwestern quadrant from 211200UTC until 212200UTC. Easterly winds are also expected to reach storm force 10 in area enclosed between 60 and 63 north and west of 19 west in East Northern Section until 212200UTC. Finally, winds are expected to reach storm force 10 between 200 and 350 miles of the centre in the southern quadrant from 211500UTC.

Wind
Cyclonic mainly southwesterly 7 to severe gale 9, occasionally storm 10 in north, decreasing 4 to 6 later in far northwest and far southeast, becoming southeasterly 6 to gale 8 later in far southwest.
Sea state
Very rough or high, occasionally very high in north.
Weather
Squally showers, becoming mainly fair in south, rain later in far south.
Visibility
Moderate or poor, occasionally good in south.

Denmark Strait

Wind
Northerly or northeasterly 4 to 6 increasing 6 to gale 8, occasionally severe gale 9 in far southwest.
Sea state
Moderate or rough, occasionally very rough in south.
Weather
Snow showers.
Visibility
Good, occasionally poor. Moderate or severe icing developing near the ice with temperatures ms06 to ms09.

North Iceland

Wind
Northerly or northwesterly 4 to 6 in northeast, otherwise cyclonic 3 to 5, occasionally 6 in east, becoming easterly 5 to 7 in far south and far southwest.
Sea state
Moderate or rough.
Weather
Snow showers.
Visibility
Good, occasionally very poor. Severe or very severe icing expected until later north of 71 north with temperatures ms12 to ms15. Occasional light icing expected north of 69 north in east with temperatures around ms03.

Norwegian Basin

Wind
Northerly becoming cyclonic, 3 to 5, occasionally 6 in north, becoming variable 2 to 4 in far south, becoming easterly or southeasterly 4 to 6 later.
Sea state
Moderate or rough.
Weather
Sleet and snow showers, occasional rain and sleet later in south.
Visibility
Moderate or good, occasionally very poor.

Outlook for following 24 hours

Storms expected in East Central Section with severe gales in both northern sections and West Central Section. Gales expected in Shannon, Rockall, Southeast Iceland and Denmark Strait.

Unscheduled storm warnings are broadcast via Safetynet and in bulletin WONT54 EGRR available via some internet and ftpmail outlets

The high seas forecast information

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 containing forecast wind direction and force, weather and visibility for the next 24 hours with an outlook for the following 24 hours.

Marine forecasts disclaimer

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.