Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

A large area of low pressure lying across Ireland, Wales and England will move slowly eastwards across the North Sea during Sunday. A mainly northerly or northwesterly airflow will then become established by Monday.

* Wind or gale warning issued

  1. From Cape Wrath to Rattray Head including Orkney

    From Cape Wrath to Rattray Head including Orkney

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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      East or northeast, backing north later, 4 or 5, decreasing 3 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain at first, fog patches, becoming fair later.
    • Visibility

      Moderate or good, occasionally very poor until later.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      Northerly 3 or 4, occasionally 5 in east, becoming variable 2 at times in Moray Firth.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good, occasionally moderate.

    Issued at 00:00 UTC on Sunday 23rd Jul

  2. Rattray Head to Berwick on Tweed * warning

    Rattray Head to Berwick on Tweed

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    Strong wind warning

    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      East or northeast 3 or 4 backing north 4 or 5, occasionally 6 later.
    • Sea State

      Slight or moderate.
    • Weather

      Rain at times, fog patches at first.
    • Visibility

      Moderate or good, occasionally very poor at first.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      North 4 or 5, occasionally 6 at first, then veering east 3 or 4 in St Andrews Bay and Firth of Forth.
    • Sea State

      Slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good, occasionally moderate.

    Issued at 00:00 UTC on Sunday 23rd Jul

  3. Berwick on Tweed to Whitby * warning

    Berwick on Tweed to Whitby

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    Strong wind warning

    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

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

      Slight, becoming moderate later.
    • Weather

      Rain or showers, fog patches in north.
    • Visibility

      Moderate or good, occasionally very poor in north.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      North or northwest 5 to 7, decreasing 4 later.
    • Sea State

      Moderate or rough.
    • Weather

      Rain then fair.
    • Visibility

      Moderate or good, occasionally poor at first.

    Issued at 00:00 UTC on Sunday 23rd Jul

  4. Whitby to Gibraltar Point

    Whitby to Gibraltar Point

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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      Variable 3 or less, becoming northerly or northwesterly 4 or 5 later in north.
    • Sea State

      Slight, occasionally moderate later in north.
    • Weather

      Showers, thundery later.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      Variable 3 at first in south, otherwise northerly or northwesterly 4 or 5, increasing 6 or 7 for a time.
    • Sea State

      Slight at first in south, otherwise moderate, but becoming occasionally rough in north.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally poor.

    Issued at 00:00 UTC on Sunday 23rd Jul

  5. Gibraltar Point to North Foreland

    Gibraltar Point to North Foreland

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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      Southerly becoming variable, then mainly westerly or southwesterly, 3 or 4, occasionally 5 in south.
    • Sea State

      Slight, occasionally moderate near North Foreland.
    • Weather

      Showers, thundery later.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      Westerly or southwesterly 3 or 4 veering northerly 4 or 5, occasionally 6 later.
    • Sea State

      Slight, becoming slight or moderate.
    • Weather

      Rain or showers.
    • Visibility

      Moderate or good.

    Issued at 00:00 UTC on Sunday 23rd Jul

  6. North Foreland to Selsey Bill * warning

    North Foreland to Selsey Bill

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    Strong wind warning

    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      Southerly veering northwesterly, then backing westerly or southwesterly, 4 or 5, occasionally 3 at first, increasing 6 at times later.
    • Sea State

      Slight or moderate.
    • Weather

      Thundery showers.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      Westerly veering northerly or northwesterly, 4 or 5, occasionally 6 later.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 00:00 UTC on Sunday 23rd Jul

  7. Selsey Bill to Lyme Regis * warning

    Selsey Bill to Lyme Regis

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    Strong wind warning

    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

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

      Slight or moderate.
    • Weather

      Showers, occasionally thundery later.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      Northerly or northwesterly 4 or 5, occasionally 6 in east, becoming variable 3 at times later in west.
    • Sea State

      Slight, occasionally moderate at first.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Sunday 23rd 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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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      West or northwest, backing southwest for a time, 4 or 5, occasionally 3 at first.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

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

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Sunday 23rd 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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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      West or northwest 3 or 4, occasionally 5 in Bristol Channel.
    • Sea State

      Slight or moderate.
    • Weather

      Showers, thundery at times later in east.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      West or northwest 4 or 5, occasionally 6 in Bristol Channel.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Sunday 23rd 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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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

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

      Slight, occasionally moderate later.
    • Weather

      Showers.
    • Visibility

      Good.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      North or northwest 4 or 5, occasionally 6 at first, decreasing 3 at times later.
    • Sea State

      Slight or moderate, becoming slight later.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Sunday 23rd 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

    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

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

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

      Showers.
    • Visibility

      Good.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      North or northwest 4 or 5, occasionally 6 at first, becoming variable 3 at times later.
    • Sea State

      Slight or moderate, becoming slight later.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Sunday 23rd Jul

  12. Isle of Man * warning

    Isle of Man

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    Strong wind warning

    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

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

      Smooth or slight becoming slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      North or northwest 4 or 5, occasionally 6 at first, becoming variable 3 at times later.
    • Sea State

      Slight or moderate, becoming slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Sunday 23rd Jul

  13. Lough Foyle to Carlingford Lough

    Lough Foyle to Carlingford Lough

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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      Cyclonic becoming north 4 or 5, decreasing 3 at times.
    • Sea State

      Slight, occasionally moderate in North Channel.
    • Weather

      Showers.
    • Visibility

      Good.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      Northerly or northwesterly 3 or 4, increasing 5 or 6 in North Channel.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good, occasionally moderate.

    Issued at 00:00 UTC on Sunday 23rd 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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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      Cyclonic at first in far south, otherwise northeasterly backing northerly, 4 or 5, decreasing 3 at times.
    • Sea State

      Slight, occasionally moderate except in Firth of Clyde.
    • Weather

      Showers.
    • Visibility

      Good.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      Northerly or northwesterly 3 or 4, increasing 5 or 6 in North Channel.
    • Sea State

      Slight, occasionally moderate except in Firth of Clyde.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Sunday 23rd Jul

  15. Mull of Kintyre to Ardnamurchan Point

    Mull of Kintyre to Ardnamurchan Point

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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      Northeast backing north 3 or 4, increasing 5 at times.
    • Sea State

      Slight, occasionally moderate near Islay and Tiree.
    • Weather

      Showers.
    • Visibility

      Good.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      Northerly backing northwesterly 3 or 4, increasing 5 at times, then occasionally variable 2 later in north.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good, occasionally moderate.

    Issued at 00:00 UTC on Sunday 23rd Jul

  16. The Minch

    The Minch

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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      Northeast 4 or 5, occasionally 3 at first.
    • Sea State

      Slight in south, slight or moderate in north.
    • Weather

      Fair.
    • Visibility

      Good.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      North or northeast 3 or 4, increasing 5 at times.
    • Sea State

      Slight, occasionally moderate in north.
    • Weather

      Fair.
    • Visibility

      Good, occasionally poor at first in north.

    Issued at 00:00 UTC on Sunday 23rd Jul

  17. Ardnamurchan Point to Cape Wrath including the Outer Hebrides

    Ardnamurchan Point to Cape Wrath including the Outer Hebrides

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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      Northeast 4 or 5, occasionally 3 at first.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good, occasionally poor in north.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      North or northeast 3 or 4, increasing 5 at times.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Fair.
    • Visibility

      Good, occasionally poor at first.

    Issued at 00:00 UTC on Sunday 23rd Jul

  18. Shetland Isles * warning

    Shetland Isles

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    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      East 3 or 4 backing northeast 4 or 5, then backing north later.
    • Sea State

      Slight, becoming slight or moderate later.
    • Weather

      Fog patches, becoming fair later.
    • Visibility

      Moderate or good, occasionally very poor, becoming good later.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 00:00 UTC on Sunday 23rd Jul

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

    Gale Warnings in operation for Sea Area Fair Isle: Nil.

    00:00 UTC Sun 23rd Jul – 11:59 UTC Sun 23rd Jul

    • Wind

      East backing northeast 3 or 4, occasionally 5 later.
    • Sea State

      Slight, becoming slight or moderate later in south.
    • Weather

      Fog patches.
    • Visibility

      Moderate or good, occasionally very poor.

    12:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      Northeast, backing north later, 4 or 5.
    • Sea State

      Slight or moderate.
    • Weather

      Fog patches then fair.
    • Visibility

      Moderate or good, occasionally very poor at first, becoming good.

    Issued at 00:00 UTC on Sunday 23rd Jul

  19. The Channel Islands * warning

    The Channel Islands

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    Strong wind warning

    00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

    • Wind

      Westerly 4 to 6, perhaps occasionally 7 at first, becoming west to southwest 4 to 5 mid-morning, perhaps occasionally 6 mid-channel, gradually veering northwest late afternoon, decreasing 2 to 3 Jersey southwards for a time.
    • Sea State

      Rather rough to rough at first, becoming moderate in the morning, occasionally slight in the south in the afternoon.
    • Weather

      Isolated showers at first, then outbreaks of rain, especially in the south of the area by early afternoon, locally heavy, clearing by midnight.
    • Visibility

      Good, occasionally moderate to poor in rain or showers.

    00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

    • Wind

      Northwesterly 4 to 5, occasionally 6 morning and afternoon.
    • Sea State

      Moderate, locally rather rough, with a low swell.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Sunday 23rd Jul

Berwick on Tweed to Whitby

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Strong wind warning

00:00 UTC Sun 23rd Jul – 23:59 UTC Sun 23rd Jul

  • Wind

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

    Slight, becoming moderate later.
  • Weather

    Rain or showers, fog patches in north.
  • Visibility

    Moderate or good, occasionally very poor in north.

00:00 UTC Mon 24th Jul – 23:59 UTC Mon 24th Jul

  • Wind

    North or northwest 5 to 7, decreasing 4 later.
  • Sea State

    Moderate or rough.
  • Weather

    Rain then fair.
  • Visibility

    Moderate or good, occasionally poor at first.

Issued at 00:00 UTC on Sunday 23rd Jul