Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 240000UTC, low 48 north 58 west 987 expected 53 north 41 west 975 by 250000UTC. Low 57 north 21 west 969 expected 64 north 09 west 983 by same time. New high expected southern Greenland 1009 by that time.

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
Southwesterly 6 to gale 8, veering west or northwest 4 to 6.
Sea state
Very rough or high,.
Weather
Rain or squally showers.
Visibility
Good, occasionally poor.

Shannon

Wind
Southwest veering west, 5 to 7, occasionally gale 8 at first.
Sea state
High, becoming very rough.
Weather
Squally showers.
Visibility
Moderate, occasionally poor.

Rockall

Wind
West or southwest, 6 to gale 8, increasing severe gale 9 at times.
Sea state
Very rough or high.
Weather
Squally showers.
Visibility
Good, occasionally poor.

Bailey

Wind
Southerly, becoming cyclonic, 6 to gale 8, occasionally severe gale 9 in southeast.
Sea state
Very rough or high.
Weather
Squally showers.
Visibility
Moderate, occasionally poor.

Faeroes

Wind
Southerly or southwesterly, becoming cyclonic later, 6 to gale 8, occasionally severe gale 9 in south.
Sea state
Very rough or high, occasionally rough.
Weather
Squally showers.
Visibility
Good, occasionally poor.

Southeast Iceland

Wind
Cyclonic becoming northwest later, 5 to 7, increasing gale 8 at times.
Sea state
Very rough or high, occasionally rough in north.
Weather
Squally showers.
Visibility
Good, occasionally poor.

East Northern Section

In north

Wind
Cyclonic 5 to 7, occasionally gale 8 later in far south, becoming variable 2 to 4 at times in north.
Sea state
Rough or very rough, occasionally high in far south.
Weather
Occasional rain or squally showers.
Visibility
Moderate or good, occasionally poor.

In south

Wind
Cyclonic becoming westerly or northwesterly, 7 to severe gale 9, backing southerly or southwesterly 5 to 7 later, occasionally gale 8 later in southwest.
Sea state
Very rough or high, occasionally rough later.
Weather
Occasional rain or showers, squally at first, and wintry for a time in west.
Visibility
Moderate or good, occasionally poor.

West Northern Section

In north

Wind
Northerly or northeasterly becoming cyclonic, 5 to 7, occasionally gale 8 at first in north and later in west, becoming variable 2 to 4 at times.
Sea state
Rough or very rough.
Weather
Occasional rain or showers, with snow in northwest.
Visibility
Moderate or good, occasionally poor, or very poor in northwest.

In south

Wind
Northwesterly 6 to gale 8, occasionally severe gale 9 at first in east, backing westerly or southwesterly 5 to 7, becoming cyclonic 7 to severe gale 9 later.
Sea state
Rough or very rough, occasionally high in south.
Weather
Occasional rain or showers, wintry at first, then snow later in far northwest.
Visibility
Moderate or poor, occasionally good at first, becoming very poor later in far northwest.

East Central Section

In north

Wind
Westerly or northwesterly 7 to severe gale 9, backing southwesterly 5 to 7, then southerly 6 to gale 8 later in west.
Sea state
Very rough or high, occasionally rough later.
Weather
Occasional rain or squally showers, wintry at first in west.
Visibility
Moderate or good, occasionally poor.

In south

Wind
Westerly or northwesterly 5 to 7, backing southwesterly 4 to 6, then southerly 6 to gale 8 later in west.
Sea state
Very rough or high, occasionally rough later.
Weather
Showers, squally at first.
Visibility
Moderate or good.

West Central Section

High seas storm warning
Issued:

At 240000UTC, low 48 north 58 west 987 expected 53 north 41 west 975 by 250000UTC. Southerly or southwesterly winds will reach storm force 10 in the south and west of West Central Section after 241500UTC, extending into the northeast of West Central Section after 250400UTC. Winds will also reach violent storm force 11 at times in the west of West Central Section after 250000UTC.

In northeast

Wind
Northwesterly 6 to gale 8, backing southwesterly 4 to 6, becoming cyclonic 7 to severe gale 9, occasionally storm 10 later.
Sea state
Rough or very rough, occasionally high.
Weather
Occasional rain or showers, wintry at first in north.
Visibility
Moderate or good, occasionally poor.

In southwest

Wind
Westerly or southwesterly 4 to 6, becoming cyclonic gale 8 to storm 10, occasionally violent storm 11 later.
Sea state
Rough or very rough, becoming high or very high.
Weather
Occasional rain or showers.
Visibility
Good, becoming moderate or poor.

Denmark Strait

Wind
Northerly or northeasterly 5 to 7, occasionally gale 8 at first.
Sea state
Rough or very rough, occasionally moderate later in east.
Weather
Occasional sleet or snow.
Visibility
Moderate or good, occasionally very poor. Occasional light or moderate icing near ice edge with temperatures ms02 to ms04.

North Iceland

In north

Wind
Northerly or northeasterly 5 to 7, occasionally 4 later.
Sea state
Moderate or rough.
Weather
Snow showers.
Visibility
Moderate or good, occasionally very poor. Occasional light or moderate icing near ice edge with temperatures ms02 to ms04.

In south

Wind
Cyclonic 5 to 7, occasionally gale 8 at first in far northwest, becoming variable 2 to 4 at times in east.
Sea state
Moderate or rough, occasionally very rough in south and in far west.
Weather
Occasional rain or sleet, turning to snow in northwest, squally showers in south, fog patches.
Visibility
Moderate or poor, occasionally very poor. Occasional light or moderate icing in far northwest with temperatures ms02 to ms04.

Norwegian Basin

Wind
Southwesterly, becoming cyclonic later in west, 5 to 7, increasing gale 8 at times.
Sea state
Very rough or high.
Weather
Occasional rain or squally showers, fog patches in west.
Visibility
Moderate or poor, occasionally very poor in west.

Outlook for following 24 hours

Violent storms expected in West Central Section. Storms expected in West Northern Section and Denmark Strait. Gales or severe gales expected in all areas except Sole, Shannon and Southeast Iceland.

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

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.

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.