Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

A ridge of high pressure will extend across the United Kingdom from the southwest on Wednesday. This will decline during Thursday as low pressure moves into the north.

* 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

    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Southwesterly veering westerly 5 or 6, occasionally 7 for a time in north.
    • Sea State

      Slight or moderate in southeast, rough or very rough, becoming moderate in north.
    • Weather

      Occasional rain, then showers.
    • Visibility

      Good, occasionally moderate.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      Westerly 5 or 6, veering northwesterly 4 or 5, becoming variable 3 or 4 later, then northeasterly 4 or 5.
    • Sea State

      Slight or moderate.
    • Weather

      Showers, thundery later.
    • Visibility

      Good occasionally moderate later.

    Issued at 23:00 UTC on Tuesday 29th Jul

  2. Rattray Head to Berwick on Tweed * warning

    Rattray Head to Berwick on Tweed

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    Strong wind warning

    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      West or southwest 4 or 5, occasionally 6 until later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      West 4 or 5, backing southwest 3 or 4, backing south 4 or 5 later, then becoming cyclonic.
    • Sea State

      Slight or moderate, becoming smooth or slight.
    • Weather

      Showers, thundery later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 23:00 UTC on Tuesday 29th Jul

  3. Berwick on Tweed to Whitby

    Berwick on Tweed to Whitby

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    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      West 4 or 5.
    • Sea State

      Slight occasionally moderate for a time.
    • Weather

      Showers.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      West backing southwest 4 or 5.
    • Sea State

      Smooth or slight.
    • Weather

      Showers, thundery later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 23:00 UTC on Tuesday 29th Jul

  4. Whitby to Gibraltar Point

    Whitby to Gibraltar Point

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    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Northwest backing west, 4 or 5.
    • Sea State

      Smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      West 4 or 5, backing southwest 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Fair then showers.
    • Visibility

      Good.

    Issued at 23:00 UTC on Tuesday 29th Jul

  5. Gibraltar Point to North Foreland

    Gibraltar Point to North Foreland

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    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Northwesterly 4 or 5, becoming variable 3 or 4, then southwesterly later occasionally 5 in south.
    • Sea State

      Smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      Southwesterly veering westerly 3 or 4, occasionally 5 at first in south, backing southwesterly 4 or 5 occasionally 6 for a time later in south.
    • Sea State

      Smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Tuesday 29th Jul

  6. North Foreland to Selsey Bill

    North Foreland to Selsey Bill

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    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Northerly backing westerly 4 or 5, decreasing 3 at times.
    • Sea State

      Smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      Westerly or northwesterly 3 or 4, increasing 5 at times.
    • Sea State

      Smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Tuesday 29th Jul

  7. Selsey Bill to Lyme Regis

    Selsey Bill to Lyme Regis

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    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      North backing west or northwest 4 or 5, decreasing 3 at times.
    • Sea State

      Smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      West or northwest 3 or 4, increasing 5 at times.
    • Sea State

      Smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Tuesday 29th Jul

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

    Lyme Regis to Lands End including the Isles of Scilly

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    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      West or northwest 3 or 4.
    • Sea State

      Smooth or slight, occasionally moderate in far west.
    • Weather

      Fair.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      West 3 or 4, occasionally 5 later.
    • Sea State

      Smooth or slight, occasionally moderate in far west.
    • Weather

      Fair then showers.
    • Visibility

      Good.

    Issued at 23:00 UTC on Tuesday 29th Jul

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

    Lands End to St Davids Head including the Bristol Channel

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    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      North 3 or 4, backing west 4 or 5.
    • Sea State

      Slight, occasionally moderate later.
    • Weather

      Fair.
    • Visibility

      Good, occasionally moderate at first.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      West or southwest 4 or 5.
    • Sea State

      Slight or moderate.
    • Weather

      Fair then showers.
    • Visibility

      Good.

    Issued at 23:00 UTC on Tuesday 29th 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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    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Northwest 3 or 4, backing southwest 4 or 5 later.
    • Sea State

      Slight, occasionally moderate later.
    • Weather

      Fair.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

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

      Slight or moderate.
    • Weather

      Fair then showers.
    • Visibility

      Good.

    Issued at 23:00 UTC on Tuesday 29th Jul

  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

    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Northwest backing west 4 or 5, increasing 6 for a time.
    • Sea State

      Slight becoming occasionally moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      West backing southwest 4 or 5, increasing 6 for a time.
    • Sea State

      Slight, occasionally moderate for a time.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 23:00 UTC on Tuesday 29th Jul

  12. Isle of Man * warning

    Isle of Man

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    Strong wind warning

    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

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

      Slight becoming occasionally moderate.
    • Weather

      Fair then showers.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      West backing southwest 3 or 4, increasing 5 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or showers.
    • Visibility

      Moderate or good.

    Issued at 23:00 UTC on Tuesday 29th Jul

  13. Lough Foyle to Carlingford Lough * warning

    Lough Foyle to Carlingford Lough

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    Strong wind warning

    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Westerly 4 or 5, increasing 6 for a time in north, occasionally 3 later.
    • Sea State

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

      Showers, rain for a time.
    • Visibility

      Good, occasionally moderate.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      West backing southwest, veering northwest later, 3 or 4 increasing 5 for a time.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or showers,thundery later.
    • Visibility

      Good, occasionally moderate.

    Issued at 23:00 UTC on Tuesday 29th 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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    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Westerly or northwesterly 4 or 5, occasionally 3 later.
    • Sea State

      Slight or moderate, occasionally rough at first in far north.
    • Weather

      Showers, rain for a time.
    • Visibility

      Good, occasionally moderate.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      Westerly, backing southwesterly then veering northwesterly later, 3 or 4 increasing 5 for a time.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or showers, thundery later.
    • Visibility

      Good, occasionally moderate.

    Issued at 23:00 UTC on Tuesday 29th Jul

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

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    Strong wind warning

    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

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

      Rough becoming moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

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

      Moderate becoming occasionally slight.
    • Weather

      Rain or showers.
    • Visibility

      Moderate or good.

    Issued at 23:00 UTC on Tuesday 29th Jul

  16. The Minch * warning

    The Minch

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    Strong wind warning

    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      West 5 or 6, occasionally 7 for a time in north, veering northwest 4 or 5 later.
    • Sea State

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

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      Northwest 4 or 5, becoming variable 3 or 4, then northeast later occasionally 5 in north.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 23:00 UTC on Tuesday 29th 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

    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      West 5 or 6, occasionally 7 for a time in north, veering northwest 4 or 5 later.
    • Sea State

      Rough or very rough, becoming moderate later.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      Northwest 4 or 5, becoming variable 3 or 4, then northeast later occasionally 5 in north.
    • Sea State

      Moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 23:00 UTC on Tuesday 29th Jul

  18. Shetland Isles * warning

    Shetland Isles

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    Strong wind warning

    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Southwest 5 or 6, veering west or northwest 4 or 5 later.
    • Sea State

      Moderate or rough.
    • Weather

      Rain or showers.
    • Visibility

      Moderate or good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 23:00 UTC on Tuesday 29th Jul

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

    Gale Warnings in operation for Sea Area Fair Isle: Nil in operation at time of issue.

    23:00 UTC Tue 29th Jul – 10:59 UTC Wed 30th Jul

    • Wind

      Southwest 5 or 6.
    • Sea State

      Moderate or rough.
    • Weather

      Rain or showers.
    • Visibility

      Moderate or good.

    11:00 UTC Wed 30th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Southwest 5 or 6 veering west or northwest 4 or 5.
    • Sea State

      Moderate or rough.
    • Weather

      Rain or showers.
    • Visibility

      Moderate or good.

    Issued at 23:00 UTC on Tuesday 29th Jul

  19. The Channel Islands

    The Channel Islands

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    23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

    • Wind

      Northwest to north 3 to 4, backing northwest to west 2 to 3 occasionally 4 during the afternoon.
    • Sea State

      Slight.
    • Weather

      Fair.
    • Visibility

      Good.

    23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

    • Wind

      West to northwest 2 to 3, backing west to southwest in the afternoon, occasionally 4.
    • Sea State

      Slight.
    • Weather

      Fair to cloudy.
    • Visibility

      Good.

    Issued at 23:00 UTC on Tuesday 29th Jul

From Cape Wrath to Rattray Head including Orkney

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Strong wind warning

23:00 UTC Tue 29th Jul – 22:59 UTC Wed 30th Jul

  • Wind

    Southwesterly veering westerly 5 or 6, occasionally 7 for a time in north.
  • Sea State

    Slight or moderate in southeast, rough or very rough, becoming moderate in north.
  • Weather

    Occasional rain, then showers.
  • Visibility

    Good, occasionally moderate.

23:00 UTC Wed 30th Jul – 22:59 UTC Thu 31st Jul

  • Wind

    Westerly 5 or 6, veering northwesterly 4 or 5, becoming variable 3 or 4 later, then northeasterly 4 or 5.
  • Sea State

    Slight or moderate.
  • Weather

    Showers, thundery later.
  • Visibility

    Good occasionally moderate later.

Issued at 23:00 UTC on Tuesday 29th Jul