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Extended Outlook

Extended outlook forecast

Issued: 2110 on Tue 31 Mar 2015 UTC

Issued by the Met Office, on behalf of the Maritime and Coastguard Agency

Valid from 2200 on Thu 02 Apr 2015 UTC until 2200 on Sun 05 Apr 2015 UTC

Cullercoats

On Thursday evening a trough of low pressure is expected to lie from the south of Iceland to Bailey to western parts of Ireland, moving eastwards. A low, 1006, is expected to develop on the trough over Scotland early on Friday and then move quickly southeast into the southern North Sea and then away into Germany by Friday evening. A ridge of high pressure over Sole on Friday evening is expected to build northeast over the British Isles during Saturday and Sunday. Strong northwest winds over eastern parts of the North Sea on Thursday evening are expected to ease early on Saturday. Strong, mainly west to northwest winds are expected to develop over Thames, Dover and Wight for a time on Friday before easing early on Saturday. No further hazards are expected during the rest of the period

Niton

On Thursday evening a trough of low pressure is expected to lie from the south of Iceland to Bailey to western parts of Ireland, moving eastwards. A low, 1006, is expected to develop on the trough over Scotland early on Friday and then move quickly southeast into the southern North Sea and then away into Germany by Friday evening. A ridge of high pressure over Sole on Friday evening is expected to build northeast over the British Isles during Saturday and Sunday. Strong west to northwest winds affecting Sole, Fastnet and Shannon on Thursday evening are expected to extend east to all areas north of 48 north early on Friday and then ease from the west early on Saturday. Occasional strong east to southeast winds developing over the south of Fitzroy early on Saturday are expected to extend north over Biscay, the rest of Fitzroy, Sole and Shannon during Sunday

Portpatrick

On Thursday evening a trough of low pressure is expected to lie from the south of Iceland to Bailey to western parts of Ireland, moving eastwards. A low, 1006, is expected to develop on the trough over Scotland early on Friday and then move quickly southeast into the southern North Sea and then away into Germany by Friday evening. A ridge of high pressure over Sole on Friday evening is expected to build northeast over the British Isles during Saturday and Sunday. Strong, mainly west to northwest winds over Fastnet, Shannon, Rockall, Malin, Hebrides, Bailey and South-East Iceland on Thursday evening are expected to extend southeast to Lundy and Irish Sea early on Friday and then ease from the southwest later on Friday and early on Saturday. Strong south to southeast winds are expected to develop over Shannon, Rockall, Bailey and South-East Iceland during Sunday

Extended outlook overview

The extended outlooks are issued once a day, at 2300 GMT and cover the next 3 to 5 days.

For the extend outlooks the waters surrounding the British Isles are divided into three areas; Cullercoats, Portpatrick and Niton. These three areas reflect the coverage areas of the UK's Navtex transmitters, which overlap in some areas.

The extended outlook forecast contains details of the likelihood of gales or storms, a general synopsis and a general forecast for the area of coverage of each Navtex transmitter.

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.