Coast and Sea

High seas forecast and storm warnings


The general synopsis for UK

At 211200UTC, high 54 north 21 west 1039 expected 52 north 21 west 1036 by 221200UTC

Issued at: .

For the period to .

High seas forecast and storm warnings map


Sole

Wind
North or northeast 3 to 5.
Sea state
Slight or moderate.
Weather
Showers.
Visibility
Good.

Shannon

Wind
North or northeast 3 to 5.
Sea state
Slight or moderate.
Weather
Drizzle.
Visibility
Good, occasionally moderate.

Rockall

Wind
Northerly or northwesterly, backing westerly later in north, 3 to 5.
Sea state
Slight or moderate.
Weather
Drizzle.
Visibility
Good, occasionally poor.

Bailey

Wind
Northwesterly backing westerly 4 to 6.
Sea state
Moderate or rough, becoming moderate.
Weather
Occasional rain or drizzle, fog patches.
Visibility
Moderate or good, occasionally very poor.

Faeroes

Wind
Northwesterly backing westerly 3 to 5.
Sea state
Moderate or rough, becoming moderate occasionally slight.
Weather
Occasional rain or drizzle, fog patches.
Visibility
Moderate or good, occasionally very poor.

Southeast Iceland

Wind
Westerly 4 to 6, backing southwesterly 5 to 7 later.
Sea state
Moderate or rough.
Weather
Occasional rain or drizzle, fog patches.
Visibility
Moderate or good, occasionally very poor.

East Northern Section

Wind
Southwesterly 4 to 6, but westerly or northwesterly 3 or 4 at first in southeast.
Sea state
Slight or moderate in southeast, moderate or rough in northwest.
Weather
Occasional rain, drizzle and fog patches west, showers elsewhere.
Visibility
Moderate or good occasionally very poor in west, good occasionally moderate elsewhere.

West Northern Section

In far northwest of area

Wind
Cyclonic becoming southwesterly 3 to 5.
Sea state
Moderate or rough, but slight or moderate in far northwest.
Weather
Rain, drizzle and fog banks at first, fog patches later.
Visibility
Moderate to very poor, becoming moderate or good, occasionally very poor later.

In rest of area

Wind
Southerly veering southwesterly 5 to 7, occasionally gale 8 later in west.
Sea state
Moderate or rough.
Weather
Occasional rain or drizzle, fog banks becoming fog patches later.
Visibility
Moderate to very poor, becoming moderate or good occasionally very poor later.

East Central Section

In northwestern half of area

Wind
Variable 2 to 4, becoming southwesterly 3 to 5 later.
Sea state
Slight or moderate.
Weather
Showers, then rain and drizzle later in northwest.
Visibility
Good occasionally moderate, becoming moderate occasionally poor later in northwest.

In southeastern half of area

Wind
Northeasterly 3 to 5.
Sea state
Slight or moderate.
Weather
Showers.
Visibility
Good occasionally moderate.

West Central Section

In southeastern half of area

Wind
Variable 2 to 4.
Sea state
Slight or moderate.
Weather
Mainly fair, but rain later in far west and northwest.
Visibility
Good, becoming moderate occasionally poor later in far west and northwest.

In northwestern half of area

Wind
Southerly 4 to 6, veering westerly or southwesterly 3 to 5, becoming variable 2 to 4 later.
Sea state
Moderate or rough becoming moderate.
Weather
Rain, drizzle and fog banks, perhaps thundery at first in far south.
Visibility
Moderate to very poor.

Denmark Strait

Wind
Southwesterly 4 to 6, becoming variable 2 to 4 for a time in west.
Sea state
Moderate, occasionally slight near Iceland and greenland.
Weather
Occasional rain, drizzle and extensive fog becoming fog banks later.
Visibility
Moderate to very poor, occasionally good north of Iceland.

North Iceland

In far southeast of area

Wind
Variable 2 to 4, becoming southerly 4 or 5 later, then veering southwesterly 5 to 7 later.
Sea state
Moderate, occasionally rough later.
Weather
Occasional drizzle, fog patches.
Visibility
Moderate or good occasionally very poor.

In rest of area

Wind
Westerly or southwesterly 3 to 5, increasing 5 or 6 in south, backing easterly or southeasterly 3 to 5 later in north.
Sea state
Slight or moderate.
Weather
Occasional rain or drizzle in south, fog patches becoming fog banks at times.
Visibility
Moderate to very poor, occasionally good.

Norwegian Basin

Wind
Northerly or northwesterly 4 to 6, becoming variable 2 to 4 except in southeast, then southwesterly 4 or 5 later in west.
Sea state
Moderate, but moderate or rough at first in northwest.
Weather
Showers until later, occasional drizzle and fog patches later in far west.
Visibility
Good occasionally moderate, but moderate or good occasionally very poor later in far west.

Outlook for the following 24 hours

Gales expected in West Northern Section. Risk of northwesterly piteraq gales developing in far west of Denmark Strait. Risk of gales in far south of north Iceland.

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

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.

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