Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 201200UTC, low 51 north 37 west 975 expected 55 north 35 west 964 by 211200UTC. High southeast Greenland 1021 slow-moving with little change by same time. Low 67 north 12 east 994 expected 71 north 20 east 996 by that time. at 201200UTC, lows 58 north 08 west 991 and 58 north 25 west 988 losing their identities

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
Southwesterly 4 to 6, occasionally 7 later.
Sea state
Rough or very rough.
Weather
Rain, fog patches later.
Visibility
Moderate or good, occasionally very poor later.

Shannon

Wind
Southwesterly 4 to 6, occasionally 7 later.
Sea state
Very rough.
Weather
Rain.
Visibility
Good, occasionally poor.

Rockall

Wind
In south, southwesterly 4 to 6, occasionally 7 later. in north, southwesterly, becoming cyclonic, 5 to 7, occasionally gale 8, then southwesterly 4 to 6 later.
Sea state
Very rough, occasionally high at first in north.
Weather
In south, rain. in north, squally showers then rain.
Visibility
Good, occasionally poor.

Bailey

Wind
Cyclonic 5 to 7, occasionally gale 8, becoming easterly 4 to 6 for a time.
Sea state
Rough or very rough, occasionally high at first in south.
Weather
Squally showers then rain.
Visibility
Good, occasionally poor.

Faeroes

Wind
Northeasterly 4 to 6, decreasing 3 or 4, veering easterly 5 to 7 later.
Sea state
Moderate or rough, occasionally very rough later in southwest.
Weather
Wintry showers.
Visibility
Good, occasionally poor.

Southeast Iceland

Wind
Northeasterly 4 to 6, decreasing 3 or 4, veering easterly 5 to 7 later.
Sea state
Moderate or rough.
Weather
Wintry showers.
Visibility
Good, occasionally poor.

East Northern Section

High seas storm warning
Issued:

At 201200UTC, low 51 north 37 west 975 expected 55 north 35 west 964 by 211200UTC. Winds are expected to reach storm force 10 at times in the northwest semicircle between 210500UTC and 211800UTC, between 350 and 500 miles from the centre.

In area north of 62 north

Wind
Easterly or northeasterly 4 to 6, increasing 7 to severe gale 9, occasionally storm 10 later in southwest.
Sea state
Rough or very rough, occasionally moderate at first in north, becoming very rough or high.
Weather
Fair, then wintry showers in northeast, rain and sleet later.
Visibility
Good, occasionally poor in northeast, becoming moderate or poor later.

In rest of area

Wind
Cyclonic, mainly easterly or southeasterly, 6 to gale 8, but 4 to 6 at first in south, increasing gale 8 to storm 10 for a time in north, becoming southerly or southeasterly later.
Sea state
Very rough or high.
Weather
Rain then squally showers, perhaps thundery.
Visibility
Moderate or good, occasionally poor.

West Northern Section

High seas storm warning
Issued:

At 201200UTC, low 51 north 37 west 975 expected 55 north 35 west 964 by 211200UTC. Winds are expected to reach storm force 10 at times in the northwest semicircle between 210500UTC and 211800UTC, between 350 and 500 miles from the centre.

Wind
Easterly or northeasterly 6 to gale 8, becoming cyclonic 7 to severe gale 9, occasionally storm 10 northwest of the low centre.
Sea state
Very rough or high, occasionally rough in north.
Weather
Fair in northeast, wintry showers in northwest and later in south, otherwise rain at times.
Visibility
Moderate or good, occasionally poor. Occasional light icing in northwest, becoming moderate to severe later.

East Central Section

Wind
Southerly veering southwesterly, 6 to gale 8.
Sea state
Very rough or high.
Weather
Occasional rain or squally showers.
Visibility
Moderate or good, occasionally poor.

West Central Section

High seas storm warning
Issued:

At 201200UTC, low 51 north 37 west 975 expected 55 north 35 west 964 by 211200UTC. Winds are expected to reach storm force 10 at times in the northwest semicircle between 210500UTC and 211800UTC, between 350 and 500 miles from the centre.

Wind
Cyclonic, but southwesterly in south, 7 to severe gale 9, perhaps storm 10 later in northwest.
Sea state
Very rough or high, occasionally rough at first in northwest, becoming high or very high in north.
Weather
Occasional rain or squally showers.
Visibility
Moderate or poor.

Denmark Strait

Wind
Variable 2 to 4, becoming northeasterly 6 to gale 8, occasionally severe gale 9 later in southwest.
Sea state
Moderate or rough, occasionally slight at first near the ice edge.
Weather
Fair then snow showers.
Visibility
Good, occasionally very poor. Moderate to severe icing developing later within 50 miles from the ice edge with temperatures ms07 to ms10.

North Iceland

Wind
Northerly or northwesterly 4 to 6, becoming variable 2 to 4 at times, veering easterly 4 or 5 later in south.
Sea state
Moderate or rough, occasionally slight in far northwest.
Weather
Snow showers, becoming fair in northwest.
Visibility
Good, occasionally very poor. Moderate to severe icing developing in northeast with temperatures ms08 to ms11, becoming severe to very severe later with temperatures ms14 to ms17.

Norwegian Basin

Wind
Cyclonic 6 to gale 8 at first in southeast, otherwise northerly or northeasterly, backing northwesterly in south, 4 to 6, then becoming variable 3 or less later in south.
Sea state
Rough or very rough becoming moderate or rough.
Weather
Rain, sleet and snow at first near norwegian coast, otherwise wintry showers.
Visibility
Moderate to very poor at first near norwegian coast, otherwise good, occasionally poor.

Outlook for following 24 hours

Storms are expected in East Central Section and West Central Section. Severe gales are expected in East Northern Section, West Northern Section and north Iceland. Gales are expected in Shannon, Rockall, Bailey, Faeroes and Southeast Iceland.

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.