Close window
Weather warnings may have been issued

High seas forecast

Issued at 0800 UTC on Tuesday 19 September 2017
by the Met Office, Exeter, United Kingdom
for the period 0800 UTC Tuesday 19 September until 0800 UTC Wednesday 20 September 2017

General synopsis

At 190000UTC, low 62 north 32 west 995 expected 59 north 33 west 999 by 200000UTC. Low 52 north 18 west 1013 expected 59 north 13 west 999 by same time. New low expected 61 north 05 east 1011 by that time. at 190000UTC, high 48 north 52 west 1030 expected 45 north 46 west 1034 by 200000UTC. New high expected southern Greenland 1020 by same time. Low 46 north 28 west 1012 moving northeastwards and losing its identity. High northeast Greenland 1021 moving away northeastwards

Area forecasts for the next 24 hours

Sole

Southerly or southwesterly 5 or 6, occasionally 7 in west, but mainly 4 until later in east. Moderate, occasionally rough in west. Occasional rain. Good, occasionally poor.

Shannon

Cyclonic, mainly south 5 to 7, perhaps gale 8 for a time later. Moderate or rough. Occasional rain. Moderate or good, occasionally poor.

Rockall

Cyclonic, mainly south 5 to 7, perhaps gale 8 for a time later. Moderate or rough. Occasional rain. Moderate or good, occasionally poor.

Bailey

South 5 or 6, becoming variable 3 or 4, then cyclonic 5 to 7, perhaps gale 8 later. Moderate, becoming mainly rough. Occasional rain. Moderate or poor, occasionally good.

Faeroes

In east, variable 3 or 4, becoming southeasterly 4 or 5, increasing 6 later. in west, southerly or southeasterly, becoming cyclonic, 5 or 6, increasing 7, perhaps gale 8 later. In east, slight or moderate, becoming moderate or rough later. in west, moderate becoming rough later. In east, rain later. in west, occasional rain. In east, good, occasionally poor later. in west, moderate or poor, occasionally good.

Southeast Iceland

Southerly or southeasterly, becoming cyclonic, 5 or 6, increasing 7, perhaps gale 8 later. Moderate becoming rough later. Occasional rain. Moderate or poor, occasionally good.

East Northern Section

In northwest

Southerly 5 or 6, backing easterly 3 or 4, then northerly 5 or 6 later. Moderate or rough, becoming very rough later in far north. Showers. Good.

In northeast

Southwesterly becoming variable 3 or 4, then northwesterly 5 to 7 later. Moderate or rough, becoming rough or very rough later. Showers, rain later. Good, occasionally poor later.

In southeast

Variable 3 or 4, becoming cyclonic, mainly northwesterly 5 or 6, then backing southwesterly 4 or 5 later. Moderate or rough. Rain or showers. Moderate or good.

In southwest

Southwesterly, becoming cyclonic later, 4 or 5. Moderate or rough. Showers. Mainly good.

West Northern Section

In northwest

Northerly or northeasterly, but becoming cyclonic for a time in east, 7 to severe gale 9, decreasing 5 or 6 later. Moderate or rough, becoming rough or very rough for a time. Rain then showers. Moderate, occasionally poor, becoming mainly good.

In northeast

Cyclonic becoming southeasterly, then backing northeasterly later, 5 or 6, occasionally 7 at first. Moderate or rough, becoming very rough later in northeast. Showers. Mainly good.

In south

Cyclonic 5 or 6, occasionally 7 later. Moderate or rough. Occasional rain or showers. Good, occasionally moderate.

East Central Section

Southwesterly until later in southeast and cyclonic at first in southwest and in northeast, otherwise westerly or northwesterly, 5 or 6, occasionally 7 at first in southeast, and again later in west. Moderate or rough. Occasional rain or showers. Moderate or good, occasionally poor in east and in south.

West Central Section

Westerly or northwesterly 5 or 6, occasionally 7 in north. Moderate or rough, occasionally very rough later in west. Showers. Good.

Denmark Strait

Cyclonic 5 or 6 at first in southeast, otherwise northerly or northeasterly 7 to severe gale 9, decreasing 5 or 6 later in southwest. Rough or very rough, becoming very rough or high later. Rain with sleet or snow within 75 miles of greenland coast. Moderate or poor, occasionally very poor within 75 miles of greenland coast, but becoming good at times in southeast.

North Iceland

In northwestern half of area

Northeasterly 5 to 7, occasionally gale 8 in far west to the south of 72 north, becoming cyclonic mainly easterly or southeasterly 4 or 5 in east. Moderate or rough, becoming very rough in far west later to the south of 72 north. Occasional rain with sleet or snow in northwest, fog patches developing in east. Moderate, occasionally very poor.

In southeastern half of area

Cyclonic, but mainly northeasterly in north and southerly backing easterly in south, 4 or 5, but mainly 6 in north. Moderate, becoming rough later in south. Occasional rain or showers, fog patches. Moderate or good, occasionally very poor.

Norwegian Basin

Cyclonic becoming easterly 4 or 5, increasing 6 or 7 in northeast. Slight or moderate, becoming moderate or rough later in north. Occasional rain or showers. Good, occasionally moderate.

Outlook for following 24 hours

Storms expected in Denmark Strait. Gales or severe gales expected in all other areas except Sole, Shannon, Rockall and East Central Section.

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

High seas overview

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.

Follow us on

Facebook, Twitter, YouTube, Instagram, or Snapchat Facebook Follow @metoffice on Twitter YouTube Instagram Snapchat