Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

Low pressure centred near the east coast of England will bring a strong and cool northerly flow to northern and western parts of the British Isles. The filling low moving away eastwards during Friday, to allow a slight ridge of high pressure to move in from the west on Saturday.

* Wind or gale warning issued

  1. From Cape Wrath to Rattray Head including Orkney * warning

    From Cape Wrath to Rattray Head including Orkney

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Northeast 5 or 6, occasionally 7 at first near Rattray Head, backing north 4 or 5 later.
    • Sea State

      Moderate, occasionally rough.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good, occasionally poor.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

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

      Slight or moderate.
    • Weather

      Rain at first.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 12:00 UTC on Thursday 29th Jun

  2. Rattray Head to Berwick on Tweed * warning

    Rattray Head to Berwick on Tweed

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Northeast 6 or 7, occasionally gale 8 at first, backing north 4 or 5 later.
    • Sea State

      Moderate or rough.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good, occasionally poor.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

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

      Moderate, occasionally slight later.
    • Weather

      Rain at first.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 12:00 UTC on Thursday 29th Jun

  3. Berwick on Tweed to Whitby * warning

    Berwick on Tweed to Whitby

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

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

      Rough becoming moderate.
    • Weather

      Occasional rain or drizzle and fog patches.
    • Visibility

      Moderate, occasionally very poor.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      Northeast 4 or 5, backing north 5 or 6, then becoming variable 3 or 4 later.
    • Sea State

      Moderate.
    • Weather

      Occasional rain or drizzle, fair later.
    • Visibility

      Moderate or good, occasionally poor at first.

    Issued at 12:00 UTC on Thursday 29th Jun

  4. Whitby to Gibraltar Point

    Whitby to Gibraltar Point

    Go to top of page

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Cyclonic 4 or 5, becoming variable 2 or 3, then north 3 or 4 later.
    • Sea State

      Moderate, becoming slight in south.
    • Weather

      Occasional rain or drizzle and fog patches.
    • Visibility

      Moderate, occasionally very poor.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      North 3 or 4, increasing 5 or 6, then backing northwest 4 or 5 later.
    • Sea State

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

      Occasional rain, fair later.
    • Visibility

      Moderate or good.

    Issued at 12:00 UTC on Thursday 29th Jun

  5. Gibraltar Point to North Foreland

    Gibraltar Point to North Foreland

    Go to top of page

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Southwesterly 4 or 5, becoming variable 2 or 3.
    • Sea State

      Slight, occasionally moderate at first.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate in north.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      Variable 3 or 4, becoming northerly 5 to 7, then backing northwesterly 5 or 6 later.
    • Sea State

      Slight becoming moderate, occasionally rough in northeast.
    • Weather

      Rain or showers, fair later.
    • Visibility

      Good, occasionally moderate.

    Issued at 12:00 UTC on Thursday 29th Jun

  6. North Foreland to Selsey Bill

    North Foreland to Selsey Bill

    Go to top of page

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Westerly or southwesterly 3 or 4, occasionally 5 at first in east.
    • Sea State

      Moderate becoming slight.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      Southwesterly 3 or 4, veering northwesterly 4 or 5, occasionally 6 later in east.
    • Sea State

      Slight, occasionally moderate later.
    • Weather

      Showers, but rain for a time.
    • Visibility

      Good, occasionally moderate.

    Issued at 12:00 UTC on Thursday 29th Jun

  7. Selsey Bill to Lyme Regis

    Selsey Bill to Lyme Regis

    Go to top of page

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Variable 2 or 3, becoming west 3 or 4 later.
    • Sea State

      Smooth or slight.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

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

      Slight, occasionally moderate offshore.
    • Weather

      Showers, but rain for a time in east.
    • Visibility

      Good, occasionally moderate.

    Issued at 12:00 UTC on Thursday 29th Jun

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

    Lyme Regis to Lands End including the Isles of Scilly

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Variable 3 or 4 at first in Lyme Bay, otherwise northerly 4 or 5, occasionally 6 in west, backing northwesterly 5 to 7 later, occasionally gale 8 later in far west.
    • Sea State

      Slight or moderate, becoming rough west of Lizard Point, occasionally very rough later near Lands End and Isles of Scilly.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      Northwesterly 5 or 6, but 7 or gale 8 at first in far west, backing westerly 4 or 5 later.
    • Sea State

      Slight or moderate, but rough or very rough at first west of Lizard Point.
    • Weather

      Rain or showers, fair later.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 12:00 UTC on Thursday 29th Jun

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

    Lands End to St Davids Head including the Bristol Channel

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Northwesterly 5 to 7, occasionally gale 8 later in far west, but 4 or 5 in eastern Bristol Channel.
    • Sea State

      Slight or moderate in east, but moderate or rough in west, occasionally very rough later near Lands End.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      Northwesterly 5 to 7, occasionally gale 8 at first in far west, backing westerly 4 or 5 later.
    • Sea State

      Slight or moderate in east, but moderate or rough in west, occasionally very rough at first near Lands End.
    • Weather

      Rain or showers, fair later.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 12:00 UTC on Thursday 29th Jun

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

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

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Northerly or northwesterly 5 to 7, occasionally gale 8 in west.
    • Sea State

      Moderate or rough.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good, occasionally poor.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      Northerly or northwesterly 5 to 7, occasionally gale 8 at first in west, backing westerly 3 or 4 later.
    • Sea State

      Moderate or rough, becoming slight later.
    • Weather

      Rain or showers, fair later.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 12:00 UTC on Thursday 29th Jun

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

    Great Ormes Head to the Mull of Galloway

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Northerly or northwesterly 5 or 6, occasionally 7 in west.
    • Sea State

      Slight or moderate, occasionally rough near Great Orme Head and Mull of Galloway.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      Northerly 5 or 6, backing northwesterly 4 or 5, then backing southwesterly later.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or showers, fair later.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 12:00 UTC on Thursday 29th Jun

  12. Isle of Man * warning

    Isle of Man

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      North or northwest 5 to 7.
    • Sea State

      Moderate or rough.
    • Weather

      Rain or drizzle at times.
    • Visibility

      Moderate or good, occasionally poor.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

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

      Slight or moderate, occasionally rough at first.
    • Weather

      Occasional rain at first.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 12:00 UTC on Thursday 29th Jun

  13. Lough Foyle to Carlingford Lough * warning

    Lough Foyle to Carlingford Lough

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      North or northwest 5 to 7.
    • Sea State

      Moderate or rough.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good, occasionally poor at first.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

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

      Slight or moderate, occasionally rough at first.
    • Weather

      Occasional rain at first.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 12:00 UTC on Thursday 29th Jun

  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

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Northerly or northwesterly 5 or 6, occasionally 7 in North Channel.
    • Sea State

      Moderate or rough in North Channel, otherwise slight or moderate.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      Northerly 5 or 6, backing northwesterly 4 or 5, then backing southwesterly later.
    • Sea State

      Slight or moderate, occasionally rough at first in the North Channel.
    • Weather

      Occasional rain at first.
    • Visibility

      Good, occasionally moderate at first.

    Issued at 12:00 UTC on Thursday 29th Jun

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      North 5 to 7.
    • Sea State

      Moderate, occasionally rough in west.
    • Weather

      Rain at times, showers later.
    • Visibility

      Moderate or good, occasionally poor at first.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      North 5 or 6, backing northwest 3 or 4, then backing southwest 4 or 5 later.
    • Sea State

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

      Showers at first, rain later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 12:00 UTC on Thursday 29th Jun

  16. The Minch * warning

    The Minch

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      North or northeast 5 or 6, occasionally 7 at first.
    • Sea State

      Moderate.
    • Weather

      Occasional rain, fair later.
    • Visibility

      Good, occasionally moderate.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

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

      Slight or moderate.
    • Weather

      Rain later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 12:00 UTC on Thursday 29th Jun

  17. Ardnamurchan Point to Cape Wrath including the Outer Hebrides * warning

    Ardnamurchan Point to Cape Wrath including the Outer Hebrides

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      North or northeast 5 or 6, occasionally 7 at first.
    • Sea State

      Moderate or rough.
    • Weather

      Occasional rain, fair later.
    • Visibility

      Good, occasionally moderate.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

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

      Moderate, occasionally rough later.
    • Weather

      Rain later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 12:00 UTC on Thursday 29th Jun

  18. Shetland Isles * warning

    Shetland Isles

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Northeast 5 or 6, backing north 4 or 5 later.
    • Sea State

      Moderate, occasionally rough at first.
    • Weather

      Occasional rain.
    • Visibility

      Good, occasionally moderate.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 12:00 UTC on Thursday 29th Jun

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

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

    12:00 UTC Thu 29th Jun – 23:59 UTC Thu 29th Jun

    • Wind

      Northeast 5 or 6.
    • Sea State

      Moderate, occasionally rough.
    • Weather

      Occasional rain.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Fri 30th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Northeast backing north 4 or 5.
    • Sea State

      Moderate.
    • Weather

      Occasional rain.
    • Visibility

      Good, occasionally moderate.

    Issued at 12:00 UTC on Thursday 29th Jun

  19. The Channel Islands * warning

    The Channel Islands

    Go to top of page

    Strong wind warning

    12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

    • Wind

      Variable 1 to 3, occasionally 4, mid-channel, becoming north 3 to 5 this evening, backing northwest overnight, perhaps locally 6 in the west of the area in the morning.
    • Sea State

      Slight, increasing moderate overnight, locally rather rough in the west of the area in the morning.
    • Weather

      Isolated showers this afternoon, occasional rain or drizzle mainly from this evening.
    • Visibility

      Good, occasionally moderate to poor in showers and rain or drizzle later.

    12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

    • Wind

      Northwest 3 to 5, occasionally 6 in the west of the area until Saturday morning.
    • Sea State

      Moderate to rather rough with a low swell, occasionally rough in the west of the area.
    • Weather

      Occasional rain or drizzle, especially overnight, clearing in the morning.
    • Visibility

      Moderate to good, occasionally poor, becoming mainly good in the morning.

    Issued at 12:00 UTC on Thursday 29th Jun

From Cape Wrath to Rattray Head including Orkney

Go to top of page

Strong wind warning

12:00 UTC Thu 29th Jun – 11:59 UTC Fri 30th Jun

  • Wind

    Northeast 5 or 6, occasionally 7 at first near Rattray Head, backing north 4 or 5 later.
  • Sea State

    Moderate, occasionally rough.
  • Weather

    Rain at times.
  • Visibility

    Moderate or good, occasionally poor.

12:00 UTC Fri 30th Jun – 11:59 UTC Sat 1st Jul

  • Wind

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

    Slight or moderate.
  • Weather

    Rain at first.
  • Visibility

    Good, occasionally moderate at first.

Issued at 12:00 UTC on Thursday 29th Jun