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High seas forecast

Issued at 2000 UTC on Monday 18 February 2019
by the Met Office, Exeter, United Kingdom
for the period 2000 UTC Monday 18 February until 2000 UTC Tuesday 19 February 2019

Storm warnings

At 181200UTC, low 56 north 56 west 972 expected 54 north 46 west 979 by 191200UTC. Low 68 north 50 west 991 expected 61 north 53 west 976 by same time. High 77 north 18 west 1026 expected 73 north 21 west 1016 by that time. Northeasterly winds will reach storm force 10 at times in West Northern Section north of 64 north and west of 33 west, and in Denmark Strait west of 33 west, after 190300UTC, occasionally reaching violent storm force 11 at times after 190600UTC. At 181200UTC, low 51 north 30 west 988 expected 57 north 23 west 979 by 191200UTC. Easterly winds may reach storm force 10 at times in East Northern Section north of 61 north after 191900UTC

General synopsis

At 181200UTC, low 56 north 56 west 972 expected 54 north 46 west 979 by 191200UTC. Low 68 north 50 west 991 expected 61 north 53 west 976 by same time. High 77 north 18 west 1026 expected 73 north 21 west 1016 by that time. at 181200UTC, low 51 north 30 west 988 expected 57 north 23 west 979 by 191200UTC. Low 68 north 03 west 978 expected 67 north 15 east 983 by same time. New low expected 43 north 48 west 969 by that time. Low 60 north 06 west 986 losing its identity

Area forecasts for the next 24 hours

Sole

Westerly 4, backing southerly or southwesterly 6 to gale 8. Rough or very rough. Rain or showers. Good, occasionally poor.

Shannon

West 5 or 6, backing south 6 to gale 8, perhaps severe gale 9 later. Rough or very rough. Rain or showers. Good, occasionally poor.

Rockall

West 5 or 6, backing south 6 to gale 8. Rough or very rough. Rain or showers. Good, occasionally poor.

Bailey

Northwest 5 or 6, becoming variable 4, then southeast 6 to gale 8 later, perhaps severe gale 9 later. Rough or very rough. Rain or showers. Good, occasionally poor.

Faeroes

Cyclonic, becoming northwest, then veering southeast later, 5 to 7, increasing gale 8 at times. Rough or very rough. Showers. Good.

Southeast Iceland

Northerly veering easterly 6 to gale 8. Rough or very rough, occasionally moderate near Iceland coast. Wintry showers. Good, occasionally poor.

East Northern Section

In north

Easterly 5 or 6 at first in far north, otherwise southeasterly 4 or 5, increasing 7 to severe gale 9, perhaps storm 10 later. Moderate or rough, becoming very rough or high later. Showers, rain later. Good, becoming moderate or poor later.

In south

Westerly 4 or 5 at first in east, otherwise southeasterly, becoming cyclonic, then mainly westerly or southwesterly later, 5 to 7, increasing gale 8 at times. Rough or very rough. Rain at times. Moderate or good, occasionally poor.

West Northern Section

In far northwest

Northeasterly 6 to gale 8, increasing severe gale 9 or storm 10, occasionally violent storm 11, becoming variable 3 or 4 later in south. Very rough or high. Snow or snow showers. Moderate or poor, occasionally very poor. Light to moderate icing, becoming severe at times in far north.

In south

Southeasterly 6 to gale 8 at first in east, otherwise westerly or southwesterly, backing southerly later except in far east, 4 or 5, increasing 6 at times. Rough or very rough. Rain until later in east, otherwise wintry showers. Moderate or poor until later in east, otherwise mainly good.

In rest of area

Easterly or southeasterly, becoming cyclonic later, 5 to 7, increasing gale 8 at times, perhaps severe gale 9 later in northeast. Rough or very rough. Rain or sleet at times, wintry showers later in west. Moderate or poor, occasionally very poor, becoming mainly good later in west.

East Central Section

Southerly or southeasterly, veering southwesterly, but becoming cyclonic for a time in northwest, 6 to gale 8, increasing severe gale 9 at times, then veering westerly 5 or 6 later except in far east. Rough or very rough, occasionally high later in east. Occasional rain, showers later in west. Moderate or good, occasionally poor.

West Central Section

Northwesterly, but cyclonic at first in northeast, 5 or 6, occasionally 7 in north, backing southerly or southwesterly 4 or 5, increasing 6 at times, then becoming cyclonic 7 to severe gale 9 later in south. Rough or very rough, becoming high later in far southwest. Rain or showers. Moderate or good, occasionally poor, becoming moderate or poor later in southwest.

Denmark Strait

Northerly or northeasterly, veering easterly later in southeast, 6 to gale 8, but increasing severe gale 9 to violent storm 11 in southwest. Rough or very rough, becoming high in southwest. Occasional snow or snow showers, turning to rain at times in southeast. Mainly good, becoming moderate or poor, occasionally very poor. Moderate to severe icing in southwest and within 75 miles of ice edge elsewhere, with temperatures ms04 to ms07. Very severe icing developing later near ice edge in southwest with temperatures ms08 to ms11.

North Iceland

In north

Northerly or northeasterly 5 to 7, occasionally gale 8 at first in southeast, becoming variable 3 or 4 later, then becoming southerly 4 or 5 later in east. Rough or very rough, becoming moderate. Snow or snow showers. Good, occasionally poor. Occasional moderate to severe icing at first with temperatures ms04 to ms07. Very severe icing at first near ice edge in southwest with temperatures ms08 to ms10.

In south

Northerly or northeasterly 6 to gale 8, occasionally severe gale 9 at first in east, decreasing 4 or 5, then veering easterly or southeasterly 5 or 6 later. Very rough, occasionally high in east, becoming rough later. Occasional sleet or snow, or wintry showers. Moderate or good, occasionally poor. Occasional moderate to severe icing at first in far northwest, with temperatures ms04 to ms07.

Norwegian Basin

Southwesterly 6 to gale 8, veering northerly or northwesterly 7 to severe gale 9, then veering northeasterly 4 or 5 later except in far east. Rough or very rough, becoming high for a time. Occasional rain or showers. Good, occasionally poor.

Outlook for following 24 hours

Violent storms expected in West Northern Section, West Central Section and Denmark Strait, with storms in East Northern Section and East Central Section. Severe gales expected in Shannon, Bailey, Southeast Iceland and north Iceland, with gales in all other areas.

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

High seas forecast and storm warnings

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 containg 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.

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