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High seas forecast key

Map showing High seas forecast areas

Forecasts for the high seas are issued twice a day at 0800 and 2000 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 13 sea areas shown on the map. Six of the areas are also in the Shipping forecast.

The forecast contains a general synopsis and sea-area forecasts containing forecast wind direction and force, weather, visibility and sea state for the next 24 hours with an outlook for the following 24 hours.

Storm warnings

Storm warnings are issued as required throughout the day (for winds of Storm force 10 or more).

These are displayed with the High seas forecast. This example shows storm warnings in force for the East Northern section.

Storm warning example
   
Guide symbol The marine forecasts guide has more information about how to view the forecasts, including a glossary of terms used and the Beaufort scale.