Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 141200UTC, low 47 north 53 west 998 expected 47 north 36 west with little change by 151200UTC. New lows expected 56 north 20 west 988 and 62 north 27 west 985 by same time. Lows 49 north 30 west 981, 55 north 31 west 977 and 70 north 18 west 1008 all losing their identities

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
Southerly veering southwesterly 5 to 7, occasionally 4 at first, then increasing gale 8 at times in west.
Sea state
Rough or very rough, becoming very rough or high later.
Weather
Rain and fog patches, then squally showers.
Visibility
Moderate or good, occasionally very poor at first.

Shannon

Wind
Southerly veering southwesterly 5 to 7, occasionally 4 at first, then increasing gale 8 at times.
Sea state
Rough or very rough, becoming very rough or high later.
Weather
Rain and fog patches, then squally showers.
Visibility
Moderate or good, occasionally very poor at first.

Rockall

Wind
Southeasterly 5 to 7 becoming cyclonic mainly southerly 4 to 6.
Sea state
Moderate or rough becoming rough or very rough.
Weather
Rain and fog patches, then thundery showers.
Visibility
Moderate or good, occasionally very poor until later.

Bailey

Wind
Southeasterly 5 to 7, increasing gale 8 at times, then becoming cyclonic mainly southerly 4 to 6.
Sea state
Moderate or rough becoming rough or very rough.
Weather
Rain and fog patches, then thundery showers.
Visibility
Moderate or good, occasionally very poor until later.

Faeroes

Wind
Southeast 4 to 6 increasing 6 to gale 8.
Sea state
Moderate, becoming rough occasionally very rough.
Weather
Fair then rain.
Visibility
Moderate or good, occasionally poor.

Southeast Iceland

Wind
Cyclonic, but mainly southeasterly at first, 4 to 6, increasing 7 to severe gale 9 for a time.
Sea state
Moderate, becoming rough or very rough.
Weather
Rain for a time.
Visibility
Moderate or good, becoming poor for a time.

East Northern Section

In area to the north of 59 north

Wind
Easterly or northeasterly 6 to gale 8, occasionally severe gale 9 except in far northwest, then becoming variable 2 to 4 in east and cyclonic 3 to 5 later in west.
Sea state
Moderate or rough becoming rough or very rough.
Weather
Rain for a time, then showers, perhaps thundery.
Visibility
Moderate or good, becoming poor for a time.

In area to the south of 59 north

Wind
Southerly 4 to 6 becoming cyclonic 2 to 4.
Sea state
Rough or very rough.
Weather
Thundery showers.
Visibility
Moderate or good.

West Northern Section

In area to the north of 60 north

Wind
Northerly or northeasterly 5 to 7, occasionally gale 8 in east, but becoming cyclonic 4 to 6 later in far east.
Sea state
Moderate or rough, becoming rough or very rough in east.
Weather
Showers, wintry in west and north, and with snow for a time in far northwest, then rain in east.
Visibility
Moderate or good, occasionally poor, but becoming very poor for a time in far northwest.

In area to the south of 60 north

Wind
Cyclonic 4 to 6 in far east, but elsewhere northerly or northeasterly 5 to 7, occasionally gale 8 in east, backing northwesterly 4 to 6 later.
Sea state
Rough or very rough.
Weather
Rain until later in east, otherwise showers, wintry in west.
Visibility
Moderate or good, occasionally poor.

East Central Section

In area to the north of 52 north

Wind
Southerly becoming cyclonic, then westerly later, 4 to 6, increasing 7 or gale 8 later in far southeast.
Sea state
Rough or very rough, becoming high later in far southeast.
Weather
Showers, thundery or squally at times.
Visibility
Moderate or good, occasionally poor.

In area to the south of 52 north

Wind
Southwesterly veering westerly 6 to gale 8, occasionally severe gale 9 in north, then becoming cyclonic 5 to 7 later in west.
Sea state
Very rough or high.
Weather
Squally thundery showers, then rain later in west.
Visibility
Moderate or poor.

West Central Section

In southern half of the area

Wind
Northwesterly 5 to 7, occasionally gale 8 at first in east, then becoming cyclonic 6 to gale 8 in south, increasing severe gale 9 at times later in west.
Sea state
High at first in east, otherwise rough or very rough.
Weather
Rain, sleet or showers, wintry at times in west.
Visibility
Moderate or good, occasionally poor.

In northern half of the area

Wind
Cyclonic 4 or 5 at first in far northeast, otherwise northwesterly 5 to 7, occasionally gale 8 at first in east, then decreasing 4 or 5 later.
Sea state
Rough or very rough.
Weather
Rain, sleet or showers, wintry at times in west.
Visibility
Moderate or good, occasionally poor.

Denmark Strait

Wind
Northerly or northeasterly 5 to 7, occasionally gale 8 to the south of 70 north, perhaps severe gale 9 later in east.
Sea state
Moderate or rough, becoming rough or very rough in south.
Weather
Rain or sleet at times in southeast, but elsewhere sleet, snow or freezing rain at times.
Visibility
Moderate or good, occasionally very poor. Light or moderate icing at times within 100 miles of the greenland coast, with temperatures ms02 to ms05.

North Iceland

Wind
Northeasterly 5 or 6 at first in far northwest, otherwise easterly or southeasterly 3 to 5, increasing 6 to gale 8 later in south but becoming variable 2 to 4 later in north.
Sea state
Moderate or rough, becoming slight or moderate in north but rough or very rough in south.
Weather
Rain, drizzle or sleet at times, with snow or freezing rain at times in northwest, fog banks or extensive fog except in southeast.
Visibility
Mainly moderate to very poor, but in southeast, good, becoming moderate or poor later. Occasional light icing at first in far northwest, with temperatures ms02 to ms05.

Norwegian Basin

In western half of the area

Wind
Southeasterly 3 or 4 increasing 5 to 7, occasionally gale 8 later.
Sea state
Moderate becoming rough, then becoming very rough later.
Weather
Rain later.
Visibility
Good, becoming moderate or poor later.

In eastern half of the area

Wind
Southeasterly 5 or 6 at first in far northeast, otherwise variable 2 to 4 becoming easterly or southeasterly 3 or 4.
Sea state
Slight or moderate, becoming rough later in southeast.
Weather
Showers at first.
Visibility
Good, occasionally moderate at first.

Outlook for following 24 hours

Severe gales expected in East Central Section, West Central Section and Denmark Strait. Gales expected in Shannon, West Northern Section, north Iceland and Norwegian Basin.

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.