Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

A mainly westerly airflow will affect the British Isles during the next couple of days. A developing area of low pressure will move eastwards across Wales and central England on Friday, bringing the risk of gales to the eastern English Channel and southern North Sea.

* 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 Thu 28th May – 16:59 UTC Fri 29th May

    • Wind

      Westerly veering northwesterly, 5 or 6 occasionally 7 for a time.
    • Sea State

      Moderate occasionally rough for a time in north, slight or moderate in south.
    • Weather

      Showers.
    • Visibility

      Good.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      West or northwest, 4 or 5 occasionally 6 for a time, becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  2. Rattray Head to Berwick on Tweed * warning

    Rattray Head to Berwick on Tweed

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    Strong wind warning

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

    • Wind

      West 5 or 6 occasionally 7 at first, becoming variable 3 or 4 for a time.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      West or northwest 4 or 5, increasing 6 at times, becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  3. Berwick on Tweed to Whitby * warning

    Berwick on Tweed to Whitby

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    Strong wind warning

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

    • Wind

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

      Slight or moderate.
    • Weather

      Showers, rain for a time in south.
    • Visibility

      Good, occasionally moderate for a time in south.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      West or northwest 4 or 5, occasionally 6 for a time.
    • Sea State

      Slight or moderate.
    • Weather

      Showers, fair later.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  4. Whitby to Gibraltar Point * warning

    Whitby to Gibraltar Point

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    Strong wind warning

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

    • Wind

      West 5 or 6, backing southwest 4 or 5, becoming cyclonic 5 to 7 later, then northwest 5 or 6.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain, showers later.
    • Visibility

      Moderate occasionally poor, becoming good later.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

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

      Slight or moderate.
    • Weather

      Showers, fair later.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  5. Gibraltar Point to North Foreland * warning

    Gibraltar Point to North Foreland

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    Strong wind warning

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

    • Wind

      Westerly or southwesterly, veering northwesterly later, but becoming cyclonic for a time in north, 4 or 5 increasing 6 or 7, perhaps gale 8 for a time later.
    • Sea State

      Slight becoming moderate.
    • Weather

      Rain for a time later.
    • Visibility

      Good, becoming moderate occasionally poor for a time later.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      Northwesterly 6 or 7, backing westerly 4 or 5 later, then backing southerly.
    • Sea State

      Moderate becoming slight.
    • Weather

      Showers, fair later.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  6. North Foreland to Selsey Bill * warning

    North Foreland to Selsey Bill

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    Strong wind warning

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

    • Wind

      Westerly 4 or 5, occasionally 6 at first in east, backing southwesterly 6 to gale 8 later, then veering westerly 5 or 6.
    • Sea State

      Moderate, occasionally rough later.
    • Weather

      Rain for a time later.
    • Visibility

      Good, becoming moderate occasionally poor for a time later.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      Westerly 5 or 6, veering northwesterly 4 or 5, backing southwesterly later.
    • Sea State

      Moderate or rough, becoming slight or moderate.
    • Weather

      Showers, fair later.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  7. Selsey Bill to Lyme Regis * warning

    Selsey Bill to Lyme Regis

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    Strong wind warning

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

    • Wind

      West 4 or 5, backing southwest 6 to gale 8 later, then veering west 5 or 6.
    • Sea State

      Slight becoming moderate, occasionally rough later.
    • Weather

      Rain for a time later.
    • Visibility

      Good, becoming moderate occasionally poor for a time later.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      West 5 or 6, veering northwest 4 or 5, backing south 3 or 4 later.
    • Sea State

      Moderate or rough, becoming slight or moderate.
    • Weather

      Showers, fair later.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  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 Thu 28th May – 16:59 UTC Fri 29th May

    • Wind

      Northwest 4 or 5, backing west 6 or 7, veering northwest 5 or 6 later.
    • Sea State

      Moderate.
    • Weather

      Rain, showers later.
    • Visibility

      Moderate occasionally poor, becoming good.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      Northwest 4 or 5 occasionally 6 at first, becoming variable 3 or 4 later, then becoming southwest 5 or 6.
    • Sea State

      Moderate, becoming slight in east.
    • Weather

      Rain later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 17:00 UTC on Thursday 28th May

  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 Thu 28th May – 16:59 UTC Fri 29th May

    • Wind

      West 4 or 5, backing southwest 6 or 7, veering northwest 5 or 6 later.
    • Sea State

      Moderate.
    • Weather

      Occasional rain, showers later.
    • Visibility

      Moderate occasionally poor, becoming good later.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      Northwest 4 or 5, occasionally 6 for a time, becoming variable 3 or 4 later, then south 5 or 6.
    • Sea State

      Slight or moderate.
    • Weather

      Rain later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 17:00 UTC on Thursday 28th May

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

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

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    Strong wind warning

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

    • Wind

      Southwest veering west or northwest, 4 or 5 increasing 6 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain, showers later.
    • Visibility

      Moderate occasionally poor, becoming good later.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      West or northwest 4 or 5, occasionally 6 for a time, backing southwest 3 or 4 later, then backing south 5 or 6.
    • Sea State

      Slight or moderate.
    • Weather

      Showers at first, rain later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 17:00 UTC on Thursday 28th May

  11. Great Ormes Head to the Mull of Galloway * warning

    Great Ormes Head to the Mull of Galloway

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    Strong wind warning

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

    • Wind

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

      Slight or moderate.
    • Weather

      Rain at first, then showers.
    • Visibility

      Moderate or poor, becoming good.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      Northwest 5 or 6, backing west 4 or 5, backing south 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers for a time, rain later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 17:00 UTC on Thursday 28th May

  12. Isle of Man * warning

    Isle of Man

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    Strong wind warning

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

    • Wind

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

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      West or northwest 4 or 5 occasionally 6 at first, backing west or southwest 4 later.
    • Sea State

      Slight occasionally moderate at first.
    • Weather

      Showers at first.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 17:00 UTC on Thursday 28th May

  13. Lough Foyle to Carlingford Lough * warning

    Lough Foyle to Carlingford Lough

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    Strong wind warning

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

    • Wind

      West or northwest 5 or 6.
    • Sea State

      Slight or moderate, but rough for a time in north.
    • Weather

      Showers.
    • Visibility

      Good.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      Northwest 4 or 5, occasionally 6 for a time, becoming variable 3 or 4 later, then south or southeast 5 or 6.
    • Sea State

      Slight or moderate.
    • Weather

      Showers for a time.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

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

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

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    Strong wind warning

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

    • Wind

      Westerly or northwesterly 5 or 6.
    • Sea State

      Slight or moderate, but rough for a time in north.
    • Weather

      Showers.
    • Visibility

      Good.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      Northwesterly 4 or 5, occasionally 6 for a time, becoming variable 3 or 4 later, then southerly or southeasterly 5 or 6.
    • Sea State

      Slight or moderate.
    • Weather

      Showers for a time.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

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    Strong wind warning

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

    • Wind

      Westerly or northwesterly 5 or 6, occasionally 7 at first.
    • Sea State

      Rough occasionally very rough at first, becoming moderate later.
    • Weather

      Showers.
    • Visibility

      Good.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      Northwesterly 4 or 5, occasionally 6 for a time, backing southwesterly 3 or 4 later, then backing southeasterly 4 or 5 occasionally 6 in south.
    • Sea State

      Moderate.
    • Weather

      Showers for a time.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  16. The Minch * warning

    The Minch

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    Strong wind warning

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

    • Wind

      West or northwest 5 or 6, occasionally 7 for a time.
    • Sea State

      Slight or moderate, occasionally rough for a time in far south and far north.
    • Weather

      Showers.
    • Visibility

      Good.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      West or northwest 4 or 5, occasionally 6 for a time, backing south or southwest 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers for a time.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  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 Thu 28th May – 16:59 UTC Fri 29th May

    • Wind

      West or northwest 5 or 6, occasionally 7 for a time.
    • Sea State

      Rough or very rough, becoming moderate or rough.
    • Weather

      Showers.
    • Visibility

      Good.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      West or northwest 4 or 5, occasionally 6 for a time, backing south or southwest 3 or 4 later.
    • Sea State

      Moderate occasionally rough for a time.
    • Weather

      Showers for a time.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  18. Shetland Isles * warning

    Shetland Isles

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

    • Wind

      Southwest 4 or 5, becoming cyclonic 3 or 4.
    • Sea State

      Moderate occasionally slight in east.
    • Weather

      Showers.
    • Visibility

      Good.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 17:00 UTC on Thursday 28th May

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

    Gale Warnings in operation for Sea Area Fair Isle: Nil

    17:00 UTC Thu 28th May – 04:59 UTC Fri 29th May

    • Wind

      Southwest 4 or 5 becoming cyclonic 3 or 4.
    • Sea State

      Moderate, occasionally slight in east.
    • Weather

      Showers.
    • Visibility

      Good.

    05:00 UTC Fri 29th May – 16:59 UTC Fri 29th May

    • Wind

      Cyclonic 3 or 4.
    • Sea State

      Moderate, occasionally slight in east.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

  19. The Channel Islands * warning

    The Channel Islands

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    Strong wind warning

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

    • Wind

      West to northwest 3 to 4, occasionally 5, backing southwest before dawn and increasing 5 to 6, occasionally 7 in the north of the area for a time, veering west to northwest during the afternoon.
    • Sea State

      Slight, becoming moderate Friday morning and rather rough in the north.
    • Weather

      Fair becoming cloudy for a time with showery rain around the middle of the day.
    • Visibility

      Good, locally moderate on Friday.

    17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

    • Wind

      West to northwest 5 to 6, decreasing 2 to 4 by dawn, backing southwest by midday.
    • Sea State

      Moderate to rather rough, decreasing slight by dawn.
    • Weather

      Fair becoming cloudy Saturday afternoon.
    • Visibility

      Good.

    Issued at 17:00 UTC on Thursday 28th May

Lyme Regis to Lands End including the Isles of Scilly

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Strong wind warning

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

  • Wind

    Northwest 4 or 5, backing west 6 or 7, veering northwest 5 or 6 later.
  • Sea State

    Moderate.
  • Weather

    Rain, showers later.
  • Visibility

    Moderate occasionally poor, becoming good.

17:00 UTC Fri 29th May – 16:59 UTC Sat 30th May

  • Wind

    Northwest 4 or 5 occasionally 6 at first, becoming variable 3 or 4 later, then becoming southwest 5 or 6.
  • Sea State

    Moderate, becoming slight in east.
  • Weather

    Rain later.
  • Visibility

    Good, occasionally moderate later.

Issued at 17:00 UTC on Thursday 28th May