Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

Summary

Low pressure remaining slow moving to the northeast of Scotland, with high pressure close to the Azores, will maintain a generally unsettled westerly airflow across the United Kingdom. A discrete area of low pressure will move eastwards across central areas on Thursday.

* Wind or gale warning issued

  1. From Cape Wrath to Rattray Head including Orkney * warning

    From Cape Wrath to Rattray Head including Orkney

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    Strong wind warning

    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      West or southwest, 4 or 5, occasionally 6 at first.
    • Sea State

      Slight or moderate, becoming smooth or slight in east.
    • Weather

      Occasional rain or showers.
    • Visibility

      Good, occasionally moderate.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      West or northwest, backing southwest at times, 4 or 5, increasing 6 at times.
    • Sea State

      Smooth or slight early and later in east, otherwise slight or moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 17:00 UTC on Wednesday 27th Jul

  2. Rattray Head to Berwick on Tweed

    Rattray Head to Berwick on Tweed

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    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      West or southwest, backing south later, 4 or 5.
    • Sea State

      Slight or moderate for a time near Rattray Head, otherwise smooth or slight.
    • Weather

      Occasional rain for a time later.
    • Visibility

      Good.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      South veering northwest 4 or 5, becoming variable 3 at times.
    • Sea State

      Smooth or slight, becoming moderate for a time in far north.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 17:00 UTC on Wednesday 27th Jul

  3. Berwick on Tweed to Whitby

    Berwick on Tweed to Whitby

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    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      West backing southeast later, 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Occasional rain later.
    • Visibility

      Mainly good.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      South 3 or 4, becoming cyclonic, then northwest 4 or 5, becoming variable 3 or 4 later.
    • Sea State

      Smooth or slight, becoming slight, occasionally moderate.
    • Weather

      Rain at first, showers later.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 17:00 UTC on Wednesday 27th Jul

  4. Whitby to Gibraltar Point

    Whitby to Gibraltar Point

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    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Variable, mainly south, 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Occasional rain later.
    • Visibility

      Mainly good.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      South veering southwest 3 or 4, occasionally 5 for a time, becoming variable 3 or less later.
    • Sea State

      Smooth or slight, becoming slight, occasionally moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 17:00 UTC on Wednesday 27th Jul

  5. Gibraltar Point to North Foreland * warning

    Gibraltar Point to North Foreland

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    Strong wind warning

    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Variable 3 or 4, becoming southwesterly 5 or 6 later in south.
    • Sea State

      Smooth or slight, occasionally moderate in southeast.
    • Weather

      Showers at first, rain later.
    • Visibility

      Moderate or good, occasionally poor later.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      Southwesterly, 3 or 4 in north, 5 or 6 in south, becoming variable 3 or 4 later.
    • Sea State

      Smooth or slight, occasionally moderate in southeast.
    • Weather

      Rain or showers, perhaps thundery early and later.
    • Visibility

      Moderate or good, occasionally poor.

    Issued at 17:00 UTC on Wednesday 27th Jul

  6. North Foreland to Selsey Bill * warning

    North Foreland to Selsey Bill

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    Strong wind warning

    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Southwesterly 5 or 6.
    • Sea State

      Slight or moderate, occasionally smooth in shelter.
    • Weather

      Rain later.
    • Visibility

      Good, occasionally poor later.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      Southwesterly 5 or 6.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or drizzle, showers later.
    • Visibility

      Moderate or good, occasionally poor.

    Issued at 17:00 UTC on Wednesday 27th Jul

  7. Selsey Bill to Lyme Regis * warning

    Selsey Bill to Lyme Regis

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    Strong wind warning

    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      West 4 or 5, backing southwest 5 or 6.
    • Sea State

      Slight or moderate, occasionally smooth in shelter.
    • Weather

      Rain or drizzle later.
    • Visibility

      Good, occasionally poor later.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      West or southwest 5 or 6.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or drizzle, showers later.
    • Visibility

      Good, occasionally poor.

    Issued at 17:00 UTC on Wednesday 27th Jul

  8. Lyme Regis to Lands End including the Isles of Scilly * warning

    Lyme Regis to Lands End including the Isles of Scilly

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    Strong wind warning

    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      West or northwest 4 or 5, backing west or southwest 5 or 6.
    • Sea State

      Slight or moderate, occasionally smooth in shelter.
    • Weather

      Rain or drizzle for a time later.
    • Visibility

      Good, occasionally poor later.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      West 5 or 6, decreasing 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or drizzle, showers later.
    • Visibility

      Good, occasionally poor.

    Issued at 17:00 UTC on Wednesday 27th Jul

  9. Lands End to St Davids Head including the Bristol Channel * warning

    Lands End to St Davids Head including the Bristol Channel

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    Strong wind warning

    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Northwest backing west or southwest 3 or 4, increasing 5 or 6.
    • Sea State

      Smooth in far east, otherwise slight or moderate.
    • Weather

      Rain for a time later.
    • Visibility

      Good, occasionally poor later.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      West 5 or 6, becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or drizzle, showers later.
    • Visibility

      Good, occasionally poor.

    Issued at 17:00 UTC on Wednesday 27th Jul

  10. St Davids Head to Great Ormes Head, including St Georges Channel

    St Davids Head to Great Ormes Head, including St Georges Channel

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    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Variable 3 or 4, becoming southwest 4 or 5.
    • Sea State

      Smooth or slight, becoming slight or moderate.
    • Weather

      Fair then occasional rain.
    • Visibility

      Good, becoming moderate, occasionally poor.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      Southwest veering north 4 or 5, becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate, occasionally smooth in north.
    • Weather

      Occasional rain or drizzle, showers later.
    • Visibility

      Good, occasionally poor at first.

    Issued at 17:00 UTC on Wednesday 27th Jul

  11. Great Ormes Head to the Mull of Galloway

    Great Ormes Head to the Mull of Galloway

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    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      West 3 or 4, backing south 4 or 5 for a time.
    • Sea State

      Smooth or slight, occasionally moderate in north and west.
    • Weather

      Fair then occasional rain.
    • Visibility

      Good becoming moderate, occasionally poor.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      West 3 or 4, veering north or northwest 4 or 5.
    • Sea State

      Smooth or slight, becoming moderate for a time in west.
    • Weather

      Occasional rain then showers.
    • Visibility

      Good, occasionally poor at first.

    Issued at 17:00 UTC on Wednesday 27th Jul

  12. Isle of Man

    Isle of Man

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    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      West or southwest, backing south or southwest for a time, 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Rain for a time.
    • Visibility

      Good, becoming moderate or poor for a time.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      West 3 or 4, veering northwest 4 or 5.
    • Sea State

      Smooth or slight, becoming slight.
    • Weather

      Showers.
    • Visibility

      Mainly good.

    Issued at 17:00 UTC on Wednesday 27th Jul

  13. Lough Foyle to Carlingford Lough

    Lough Foyle to Carlingford Lough

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    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Variable 3 or 4, becoming cyclonic, then northerly later, 4 or 5.
    • Sea State

      Smooth or slight, occasionally moderate in northwest.
    • Weather

      Fair then occasional rain.
    • Visibility

      Good, becoming moderate or poor.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      Northerly or northwesterly 4 or 5, occasionally 6 for a time in east, backing northwesterly 3 or 4 later.
    • Sea State

      Smooth or slight, becoming slight or moderate for a time.
    • Weather

      Occasional rain then showers.
    • Visibility

      Good, occasionally poor at first.

    Issued at 17:00 UTC on Wednesday 27th Jul

  14. The Mull of Galloway to Mull of Kintyre including the Firth of Clyde and the North Channel

    The Mull of Galloway to Mull of Kintyre including the Firth of Clyde and the North Channel

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    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Variable 3 or 4, becoming cyclonic, then northerly later, 4 or 5.
    • Sea State

      Smooth or slight.
    • Weather

      Fair then occasional rain.
    • Visibility

      Good, becoming moderate or poor.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      Northerly or northwesterly 4 or 5, occasionally 6 for a time, backing northwesterly 3 or 4 later.
    • Sea State

      Smooth or slight, becoming slight or moderate for a time.
    • Weather

      Occasional rain then showers.
    • Visibility

      Good, occasionally poor at first.

    Issued at 17:00 UTC on Wednesday 27th Jul

  15. Mull of Kintyre to Ardnamurchan Point

    Mull of Kintyre to Ardnamurchan Point

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    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      West backing east 3 or 4, then backing north 4 or 5 later.
    • Sea State

      Smooth in shelter, otherwise slight or moderate.
    • Weather

      Fair then occasional rain.
    • Visibility

      Good, occasionally moderate.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      North backing northwest 4 or 5.
    • Sea State

      Smooth in shelter, otherwise slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 17:00 UTC on Wednesday 27th Jul

  16. The Minch * warning

    The Minch

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    Strong wind warning

    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Southwesterly 5 or 6, veering northwesterly 4 or 5 later.
    • Sea State

      Slight or moderate, becoming smooth or slight in central areas.
    • Weather

      Occasional rain or showers.
    • Visibility

      Good, occasionally moderate.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      Northwesterly 4 or 5, occasionally 6 in north.
    • Sea State

      Smooth in shelter, otherwise slight or moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 17:00 UTC on Wednesday 27th Jul

  17. Ardnamurchan Point to Cape Wrath including the Outer Hebrides * warning

    Ardnamurchan Point to Cape Wrath including the Outer Hebrides

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    Strong wind warning

    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Westerly veering northwesterly 4 or 5, occasionally 6 at first.
    • Sea State

      Moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Good, occasionally moderate.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      Northwesterly 4 or 5, occasionally 6 in north.
    • Sea State

      Moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 17:00 UTC on Wednesday 27th Jul

  18. Shetland Isles * warning

    Shetland Isles

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    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Southerly or southwesterly veering westerly or southwesterly 4 or 5, becoming cyclonic 3 or 4 for a time in north.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Moderate or good, occasionally poor.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 17:00 UTC on Wednesday 27th Jul

    For coastal areas up to 60 nautical miles from Lerwick, Shetland

    Gale Warnings in operation for Sea Area Fair Isle: Nil

    17:00 UTC Wed 27th Jul – 04:59 UTC Thu 28th Jul

    • Wind

      Southerly or southwesterly veering westerly, 4 or 5, but becoming cyclonic 3 or 4 for a time in far north.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Moderate or good, occasionally poor.

    05:00 UTC Thu 28th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Westerly backing southwesterly 4 or 5, decreasing 3 in northwest.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or showers..
    • Visibility

      Moderate or good, occasionally poor.

    Issued at 17:00 UTC on Wednesday 27th Jul

  19. The Channel Islands * warning

    The Channel Islands

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    Strong wind warning

    17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

    • Wind

      Westerly 3 to 4, backing southwest by mid-morning, increasing 4 to 5 by midday, perhaps locally 6 at times in the afternoon, veering southwest to west towards evening.
    • Sea State

      Mainly slight, becoming slight to moderate in the afternoon.
    • Weather

      Mist and fog patches, with occasional light rain and drizzle, clearing for a time overnight.
    • Visibility

      Moderate to very poor, becoming moderate to good for a time overnight.

    17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

    • Wind

      West to southwest 4 to 5, decreasing 3 to 4 Friday morning.
    • Sea State

      Slight to moderate, becoming mainly slight in the morning, with a low swell.
    • Weather

      Some light rain or drizzle at times, mist and fog patches on Thursday clearing overnight.
    • Visibility

      Moderate to very poor, becoming moderate to good on Friday.

    Issued at 17:00 UTC on Wednesday 27th Jul

Rattray Head to Berwick on Tweed

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17:00 UTC Wed 27th Jul – 16:59 UTC Thu 28th Jul

  • Wind

    West or southwest, backing south later, 4 or 5.
  • Sea State

    Slight or moderate for a time near Rattray Head, otherwise smooth or slight.
  • Weather

    Occasional rain for a time later.
  • Visibility

    Good.

17:00 UTC Thu 28th Jul – 16:59 UTC Fri 29th Jul

  • Wind

    South veering northwest 4 or 5, becoming variable 3 at times.
  • Sea State

    Smooth or slight, becoming moderate for a time in far north.
  • Weather

    Showers later.
  • Visibility

    Good.

Issued at 17:00 UTC on Wednesday 27th Jul