Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

Pressure will gradually build from the west over the next 24 hours, with winds easing for a time in most places.

* 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

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      Variable, becoming northwest 3 or 4, increasing 5 or 6.
    • Sea State

      Slight or moderate, becoming rough later in northwest.
    • Weather

      Wintry showers, mainly fair later.
    • Visibility

      Good, occasionally poor.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      Northwest, backing southwest 5 or 6, but decreasing 3 or 4 for a time.
    • Sea State

      Slight or moderate, occasionally rough in far northwest.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  2. Rattray Head to Berwick on Tweed * warning

    Rattray Head to Berwick on Tweed

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      North or northwest 4 or 5, occasionally 6 later.
    • Sea State

      Slight or moderate.
    • Weather

      Wintry showers.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      Northwesterly 4 or 5, occasionally 6 at first, backing west 4 or 5.
    • Sea State

      Slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  3. Berwick on Tweed to Whitby * warning

    Berwick on Tweed to Whitby

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      Variable 3 or 4, becoming northwest 4 or 5, occasionally 6 later.
    • Sea State

      Slight or moderate.
    • Weather

      Wintry showers.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

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

      Slight.
    • Weather

      Wintry showers at first.
    • Visibility

      Mostly good.

    Issued at 18:00 UTC on Saturday 27th Dec

  4. Whitby to Gibraltar Point

    Whitby to Gibraltar Point

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    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

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

      Slight or moderate.
    • Weather

      Wintry showers.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

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

      Slight or moderate.
    • Weather

      Wintry showers at first.
    • Visibility

      Mainly good.

    Issued at 18:00 UTC on Saturday 27th Dec

  5. Gibraltar Point to North Foreland * warning

    Gibraltar Point to North Foreland

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      Northerly or northeasterly 5 to 7.
    • Sea State

      Moderate or rough.
    • Weather

      Squally wintry showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      Northeasterly backing northwesterly 4 or 5, occasionally 6 later.
    • Sea State

      Slight or moderate.
    • Weather

      Wintry showers in east.
    • Visibility

      Good, occasionally poor in east.

    Issued at 18:00 UTC on Saturday 27th Dec

  6. North Foreland to Selsey Bill * warning

    North Foreland to Selsey Bill

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      Northerly veering northeasterly, 5 to 7, decreasing 4 at times later.
    • Sea State

      Moderate or rough, becoming slight or moderate.
    • Weather

      Squally showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      Northeasterly 4 or 5, becoming variable 3 or less, then northwesterly 4 or 5 later.
    • Sea State

      Slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  7. Selsey Bill to Lyme Regis * warning

    Selsey Bill to Lyme Regis

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      North 5 to 7, veering northeast 4 or 5.
    • Sea State

      Moderate or rough, becoming slight or moderate.
    • Weather

      Squally showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      Northeast 4 or 5, becoming variable 3 or less, then northwest 3 or 4, occasionally 5 later.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Mostly good.

    Issued at 18:00 UTC on Saturday 27th Dec

  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

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      North 5 to 7, veering northeast 4 or 5.
    • Sea State

      Moderate or rough, becoming slight in lyme bay.
    • Weather

      Squally showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      Northeast 4 or 5, becoming variable 3 or less, then northwest 3 or 4 later.
    • Sea State

      Slight or moderate, occasionally smooth later.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  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

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      North 5 to 7, veering east or northeast 3 or 4.
    • Sea State

      Moderate or rough, becoming slight in the Bristol Channel.
    • Weather

      Squally wintry showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      Northeast, becoming variable, 3 or 4.
    • Sea State

      Slight or moderate, becoming smooth in the Bristol Channel.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  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

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      North 5 to 7, becoming variable 3 or 4 later.
    • Sea State

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

      Squally wintry showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      Variable 3 or 4.
    • Sea State

      Slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  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

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      North 5 to 7, becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Squally wintry showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

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

      Slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  12. Isle of Man * warning

    Isle of Man

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      North 5 to 7, becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers at first.
    • Visibility

      Good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

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

      Slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  13. Lough Foyle to Carlingford Lough * warning

    Lough Foyle to Carlingford Lough

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      North 5 to 7, becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Squally wintry showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

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

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  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

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      North 5 to 7, becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate, becoming smooth later in shelter.
    • Weather

      Squally wintry showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

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

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

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

      Slight or moderate, occasionally rough in west.
    • Weather

      Squally wintry showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

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

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  16. The Minch * warning

    The Minch

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

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

      Slight or moderate.
    • Weather

      Squally wintry showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

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

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  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

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      North 5 to 7, becoming variable 3 or 4.
    • Sea State

      Moderate or rough.
    • Weather

      Squally wintry showers, mainly fair later.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      Variable 3 or 4, becoming or south or southwest 5 or 6.
    • Sea State

      Moderate or rough.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec

  18. Shetland Isles * warning

    Shetland Isles

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      Variable 3 or 4, becoming north or northwest 5 or 6, perhaps 7 for a time later.
    • Sea State

      Moderate or rough.
    • Weather

      Wintry showers.
    • Visibility

      Mostly good.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 18:00 UTC on Saturday 27th Dec

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

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

    18:00 UTC Sat 27th Dec – 05:59 UTC Sun 28th Dec

    • Wind

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

      Moderate.
    • Weather

      Wintry showers.
    • Visibility

      Mainly good.

    06:00 UTC Sun 28th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      West or northwest 4 or 5, veering northerly 6 soon. backing northwest 4 again later.
    • Sea State

      Moderate. rough for a time in the west later.
    • Weather

      Wintry showers.
    • Visibility

      Mainly good.

    Issued at 18:00 UTC on Saturday 27th Dec

  19. The Channel Islands * warning

    The Channel Islands

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    Strong wind warning

    18:00 UTC Sat 27th Dec – 17:59 UTC Sun 28th Dec

    • Wind

      Northwest to north 6 to 7, with gusts to 45kt near showers, veering northeast overnight, decreasing 5 to 6 by midday, further decreasing 4 to 5 by evening.
    • Sea State

      Rather rough to rough, becoming moderate to rather rough overnight, then slight to moderate in the afternoon.
    • Weather

      Squally rain or hail showers with the risk of thunder, dying out overnight.
    • Visibility

      Good, locally moderate to poor in showers.

    18:00 UTC Sun 28th Dec – 17:59 UTC Mon 29th Dec

    • Wind

      Northeast 3 to 4, locally 5 in the south at first, becoming variable 1 to 3 for a time overnight, then northwest 2 to 4 on Monday.
    • Sea State

      Slight, locally moderate at first.
    • Weather

      Fair periods.
    • Visibility

      Good.

    Issued at 18:00 UTC on Saturday 27th Dec