Coast and sea

High seas forecast and storm warnings

The general synopsis for UK

At 180000UTC, low 54 north 17 west 983 expected 56 north 14 west 991by 190000UTC. Low 47 north 19 west 997 expected 51 north 03 west 987 by same time. New low expected 59 north 31 west 998 by that time. at 180000UTC, low 43 north 54 west 969 expected 48 north 46 west 969 by 190000UTC. Low 68 north 01 west 980 expected 67 north 04 west 988 by same time. High 71 north 42 west 1028 expected 64 north 45 west 1027 by that time.

Issued at: .

For the period to .

High seas forecast and storm warnings map

Sole

Wind
Cyclonic 7 to severe gale 9, occasionally 6 at first.
Sea state
Rough or very rough, becoming very rough or high.
Weather
Rain.
Visibility
Moderate or poor.

Shannon

Wind
Cyclonic, 5 to 7, increasing 7 to severe gale 9, perhaps storm 10 for a time later.
Sea state
Rough or very rough, becoming very rough or high, occasionally very high for a time in southwest.
Weather
Showers.
Visibility
Moderate or poor.

Rockall

Wind
Cyclonic 6 to gale 8, occasionally severe gale 9, decreasing 4 to 6 later.
Sea state
Rough or very rough, occasionally high at first, and later in southwest.
Weather
Rain.
Visibility
Moderate or poor.

Bailey

Wind
Cyclonic 6 to gale 8, decreasing 4 to 6 later.
Sea state
Rough or very rough, occasionally high at first.
Weather
Rain.
Visibility
Moderate or poor.

Faeroes

Wind
Cyclonic 3 to 5.
Sea state
Rough or very rough.
Weather
Wintry showers.
Visibility
Good, occasionally very poor.

Southeast Iceland

Wind
Northeasterly 6 to gale 8 at first in northwest, otherwise cyclonic 3 to 5.
Sea state
Rough or very rough.
Weather
Wintry showers.
Visibility
Good, occasionally very poor. light icing in north.

East Northern Section

In north of area

Wind
Cyclonic 6 to gale 8, occasionally severe gale 9 at first near Iceland and for a time in west, decreasing 5 at times in south, becoming easterly or northeasterly 5 to 7, occasionally gale 8 later in west.
Sea state
Rough or very rough.
Weather
Occasional sleet and snow, but sleet or rain at times in south and west.
Visibility
Moderate or good, occasionally poor, but very poor at times in north. Occasional light icing until later near the Icelandic coast.

In south of area

Wind
Cyclonic 6 to gale 8, occasionally severe gale 9 in south, decreasing 5 to 7, occasionally gale 8 later in southeast, and 4 later in west.
Sea state
Rough or very rough, occasionally high in southeast.
Weather
Occasional rain or squally showers, wintry at times.
Visibility
Moderate or good, occasionally poor.

West Northern Section

In north of area

Wind
Cyclonic, becoming mainly northeasterly, 6 to gale 8, occasionally severe gale 9 at first in west and later in east and south, becoming variable 2 to 4 at first in southeast, and decreasing 3 to 5 later in far north.
Sea state
Rough or very rough, occasionally high in south.
Weather
Rain at times in east, but sleet or snow at times in west.
Visibility
Moderate or good, occasionally poor, but very poor at times in west. Light or moderate icing expected in far northwest at first.

In south of area

Wind
Cyclonic, 5 to 7, occasionally gale 8 at first in south, and decreasing 3 or 4 at times in northeast, becoming mainly easterly, 7 or gale 8 later in south.
Sea state
Rough or very rough.
Weather
Wintry showers, squally at times, rain or sleet later.
Visibility
Moderate or good, occasionally poor.

East Central Section

High seas storm warning
Issued:

At 180000UTC, low 54 north 17 west 983 expected 56 north 14 west 991by 190000UTC. Winds are expected to reach storm force 10 until 192200UTC within 150 and 250 miles of the centre of the low in the southwestern quadrant.

Wind
Cyclonic, mainly northwesterly 6 to gale 8, but severe gale 9 or storm 10 in northeast until later, decreasing 4 to 6 for a time in west, then becoming southerly 6 to gale 8 later in far west.
Sea state
Very rough or high, occasionally very high for a time in northeast, and rough at times later in west.
Weather
Occasional rain or squally showers, becoming fair for a time, then rain later in west.
Visibility
Moderate or poor, occasionally good for a time.

West Central Section

In northeastern half of area

Wind
Northwesterly 5 to 7, occasionally gale 8 at first in far northeast, backing westerly 3 to 5 later, becoming cyclonic, mainly easterly or southeasterly, 6 to gale 8 later.
Sea state
Rough or very rough.
Weather
Wintry showers at first, fair for a time, then rain or sleet later.
Visibility
Good, occasionally poor.

In southwestern half of area

Wind
Cyclonic, mainly southerly or southeasterly, veering mainly southerly or southwesterly later, 7 to severe gale 9, but 5 or 6 at first in east.
Sea state
Rough or very rough, becoming very rough or high, occasionally very high later in southwest.
Weather
Fair at first, then occasional rain or squally showers, wintry at times later.
Visibility
Moderate or good, becoming moderate or poor.

Denmark Strait

Wind
Northerly or northeasterly 5 to 7, decreasing 3 to 5, but backing northerly 6 or 7 for a time in northeast.
Sea state
Moderate or rough, occasionally very rough in far east.
Weather
Snow showers at first in south.
Visibility
Good, occasionally very poor at first in south. Light or moderate icing at first in southwest with temperatures ms03 to ms05, and moderate to severe icing east of 22 west from 180900utc, with temperatures ms06 to ms09.

North Iceland

Wind
Cyclonic 6 to gale 8, occasionally severe gale 9 at first in central areas, decreasing 3 to 5 later in north, and 5 at times in southeast.
Sea state
Very rough or high, becoming very rough, occasionally rough in far southeast and far north.
Weather
Occasionally sleet, snow and wintry showers.
Visibility
Moderate to very poor, occasionally good. Light or moderate icing expected near ice north of 66 north with temperatures ms03 to ms06, with occasional severe or very severe icing near the ice with temperatures ms08 to ms10, becoming confined later to the far southwest.

Norwegian Basin

Wind
Cyclonic, mainly westerly or southwesterly, 4 to 6, occasionally 7 at first in northwest and later in east.
Sea state
Rough or very rough, becoming mainly rough later.
Weather
Occasional sleet, snow or wintry showers.
Visibility
Moderate or good, occasionally very poor.

Outlook for following 24 hours

Storms expected in West Central Section with severe gales in Sole, Rockall, East Northern Section, West Northern Section, East Central Section and Norwegian Basin. Gales are expected in Shannon, Bailey, Southeast Iceland and north 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.