Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

Low pressure will persist over Scandinavia, maintaining a cool and showery northwesterly airflow across the United Kingdom. However, a new area of low pressure will move east-southeastwards across northern areas later today and during Thursday, bringing further showers or perhaps a longer spell of rain.

* 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

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      West or northwest 4 or 5, becoming cyclonic 5 or 6, then becoming northeast 4 or 5 later.
    • Sea State

      Slight or moderate, occasionally rough at first.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

      Northeast backing north, 4 or 5.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 11:00 UTC on Wednesday 20th Aug

  2. Rattray Head to Berwick on Tweed * warning

    Rattray Head to Berwick on Tweed

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    Strong wind warning

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Northwesterly backing southwesterly, 4 or 5, increasing 6 at times, becoming cyclonic 3 or 4 later in north.
    • Sea State

      Rough at first near Rattray Head, otherwise slight or moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate later.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

      Cyclonic 2 or 3 at first in north, otherwise southwesterly veering northwesterly, 4 or 5, occasionally 6 later in north.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 11:00 UTC on Wednesday 20th Aug

  3. Berwick on Tweed to Whitby * warning

    Berwick on Tweed to Whitby

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    Strong wind warning

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Variable 2 or 3, increasing 4 at times, becoming west or southwest 4 or 5, occasionally 6 later.
    • Sea State

      Moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate later.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Moderate, occasionally slight.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 11:00 UTC on Wednesday 20th Aug

  4. Whitby to Gibraltar Point

    Whitby to Gibraltar Point

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    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Variable 3 or 4, decreasing 2 for a time, becoming west or southwest 4 or 5 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  5. Gibraltar Point to North Foreland

    Gibraltar Point to North Foreland

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    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Variable 3 or 4, decreasing 2 for a time, becoming westerly or southwesterly 4 or 5 later.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

      Westerly or southwesterly 4 or 5, increasing 6 at times, veering northwesterly 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  6. North Foreland to Selsey Bill

    North Foreland to Selsey Bill

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    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Westerly or southwesterly 4 or 5, decreasing 3 at times.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Slight becoming moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  7. Selsey Bill to Lyme Regis

    Selsey Bill to Lyme Regis

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    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

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

      Slight, occasionally moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Slight becoming moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  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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    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

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

      Slight, occasionally moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  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

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Northwest 3 or 4, backing west or southwest 4 or 5, occasionally 6 later in Bristol Channel.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 11:00 UTC on Wednesday 20th Aug

  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

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

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

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

      West or southwest, 4 or 5, increasing 6 at times, veering northwest 3 or 4.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 11:00 UTC on Wednesday 20th Aug

  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

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      North or northwest backing west or southwest, 4 or 5, increasing 6 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Slight or moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 11:00 UTC on Wednesday 20th Aug

  12. Isle of Man * warning

    Isle of Man

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    Strong wind warning

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Northwest 4 or 5, backing west 3 or 4, then further backing southwest 5 or 6 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 11:00 UTC on Wednesday 20th Aug

  13. Lough Foyle to Carlingford Lough * warning

    Lough Foyle to Carlingford Lough

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    Strong wind warning

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Northwesterly 3 or 4, increasing 5 at times, backing westerly or southwesterly 5 or 6, then veering northwesterly 4 or 5 later in north.
    • Sea State

      Slight or moderate.
    • Weather

      Showers, occasional rain later.
    • Visibility

      Good, occasionally moderate later.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

      Westerly at first in south, otherwise northwesterly, 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  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

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Northwesterly 3 or 4, increasing 5 at times, backing westerly or southwesterly 5 or 6, then veering northwesterly 4 or 5 later in north.
    • Sea State

      Slight or moderate.
    • Weather

      Showers, occasional rain later.
    • Visibility

      Good, occasionally moderate later.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

      Westerly at first in south, otherwise northwesterly, 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

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    Strong wind warning

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      North or northwest backing west or southwest for a time, 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  16. The Minch * warning

    The Minch

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    Strong wind warning

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      West or southwest, backing north or northeast later, 5 or 6, increasing 7 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  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

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      West or southwest, backing north or northeast later, 5 or 6, increasing 7 at times.
    • Sea State

      Mainly rough in north, otherwise moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

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

      Moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  18. Shetland Isles * warning

    Shetland Isles

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    Strong wind warning

    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Northwest 5 or 6 decreasing 3 or 4, then veering north 4 or 5 later.
    • Sea State

      Rough becoming moderate.
    • Weather

      Showers.
    • Visibility

      Moderate or good.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 11:00 UTC on Wednesday 20th Aug

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

    Gale Warnings in operation for Sea Area Fair Isle: Nil

    11:00 UTC Wed 20th Aug – 22:59 UTC Wed 20th Aug

    • Wind

      Northwest 5 or 6 decreasing 3 or 4.
    • Sea State

      Rough decaying moderate.
    • Weather

      Occasional showers.
    • Visibility

      Moderate or good.

    23:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Northwest 3 or 4 veering north 4 or 5.
    • Sea State

      Moderate.
    • Weather

      Occasional showers.
    • Visibility

      Moderate or good.

    Issued at 11:00 UTC on Wednesday 20th Aug

  19. The Channel Islands

    The Channel Islands

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    11:00 UTC Wed 20th Aug – 10:59 UTC Thu 21st Aug

    • Wind

      Northwest to west 2 to 3, occasionally 4, becoming westerly Thursday morning and increasing 3 to 4.
    • Sea State

      Smooth or slight, locally moderate Thursday morning.
    • Weather

      Isolated showers.
    • Visibility

      Good, locally moderate in showers.

    11:00 UTC Thu 21st Aug – 10:59 UTC Fri 22nd Aug

    • Wind

      Westerly 3 in the south to 4 in the north, increasing 4 to 5 late afternoon, veering northwest 3 to 4 around midday Friday.
    • Sea State

      Slight to moderate, becoming generally moderate by evening.
    • Weather

      Scattered showers overnight and Friday morning.
    • Visibility

      Good, locally moderate in showers.

    Issued at 11:00 UTC on Wednesday 20th Aug