Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

An area of low pressure will move southeastwards across the western half of the English Channel during Friday evening. Another developing area of low pressure will then move eastwards across southern parts during Saturday.

* 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 Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      East, backing northeast 4 or 5, occasionally 6 at first.
    • Sea State

      Moderate or rough.
    • Weather

      Fair, showers later.
    • Visibility

      Good, occasionally moderate later.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      Northeast 4 or 5, increasing 6 or 7 later.
    • Sea State

      Slight or moderate, occasionally rough in north.
    • Weather

      Wintry showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 18:00 UTC on Friday 12th Feb

  2. Rattray Head to Berwick on Tweed * warning

    Rattray Head to Berwick on Tweed

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Easterly 5 to 7, decreasing 4 at times.
    • Sea State

      Moderate or rough.
    • Weather

      Rain or wintry showers.
    • Visibility

      Good, occasionally poor.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      East, backing northeast, 5 or 6, decreasing 4 at times.
    • Sea State

      Moderate.
    • Weather

      Rain or wintry showers.
    • Visibility

      Good, occasionally poor.

    Issued at 18:00 UTC on Friday 12th Feb

  3. Berwick on Tweed to Whitby * warning

    Berwick on Tweed to Whitby

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Variable 3 or 4, becoming easterly 5 or 6, occasionally 7 in north.
    • Sea State

      Moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      East, backing northeast, 4 or 5, increasing 6 at times.
    • Sea State

      Moderate.
    • Weather

      Rain or wintry showers.
    • Visibility

      Good, occasionally poor.

    Issued at 18:00 UTC on Friday 12th Feb

  4. Whitby to Gibraltar Point * warning

    Whitby to Gibraltar Point

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

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

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

      Showers.
    • Visibility

      Good.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      East, backing northeast, 5 to 7.
    • Sea State

      Moderate.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 18:00 UTC on Friday 12th Feb

  5. Gibraltar Point to North Foreland * warning

    Gibraltar Point to North Foreland

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Southeasterly, backing easterly later, 3 or 4, increasing 5 or 6 later.
    • Sea State

      Slight, becoming moderate later.
    • Weather

      Occasional rain in south.
    • Visibility

      Good, occasionally moderate in south.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      Easterly, backing northeasterly, 4 or 5, increasing 6 to gale 8 later.
    • Sea State

      Moderate, occasionally rough later in north.
    • Weather

      Occasional rain.
    • Visibility

      Good, occasionally moderate.

    Issued at 18:00 UTC on Friday 12th Feb

  6. North Foreland to Selsey Bill * warning

    North Foreland to Selsey Bill

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Southeasterly, backing northeasterly, 4 or 5, increasing 6 or 7 for a time.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or sleet.
    • Visibility

      Good, occasionally moderate.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      Northeasterly, backing northerly, 4 or 5, increasing 6 to gale 8 later.
    • Sea State

      Moderate, occasionally slight.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 18:00 UTC on Friday 12th Feb

  7. Selsey Bill to Lyme Regis * warning

    Selsey Bill to Lyme Regis

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Southeast, backing northeast later, 4 or 5, increasing 6 or 7 for a time.
    • Sea State

      Slight or moderate.
    • Weather

      Showers, rain or sleet for a time.
    • Visibility

      Good, occasionally moderate.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      Northeast 4 or 5, backing north later 6 or 7.
    • Sea State

      Moderate or rough, becoming slight or moderate.
    • Weather

      Rain or showers.
    • Visibility

      Moderate or good.

    Issued at 18:00 UTC on Friday 12th Feb

  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 Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Cyclonic 4 or 5, increasing 6 to gale 8 for a time.
    • Sea State

      Moderate or rough in east, rough, becoming very rough, occasionally high in west.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally poor.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      Cyclonic 4 or 5, increasing 6 or 7 for a time in west, becoming northeast 5 or 6 later.
    • Sea State

      Moderate or rough, but very rough at first in west.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally poor.

    Issued at 18:00 UTC on Friday 12th Feb

  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 Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Cyclonic 4 or 5, increasing 6 or 7 for a time, becoming variable 3 or 4 later.
    • Sea State

      Moderate or rough, becoming very rough in south.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally poor.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      Variable 3 or 4, becoming northeast 5 to 7.
    • Sea State

      Rough or very rough, becoming moderate or rough.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally poor.

    Issued at 18:00 UTC on Friday 12th Feb

  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 Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Southeast, backing east later, 4 or 5, increasing 6 or 7 for a time.
    • Sea State

      Slight or moderate, becoming rough near pembrokeshire.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      East, backing northeast, 4 or 5, increasing 6 or 7 later.
    • Sea State

      Moderate or rough in south, slight or moderate in north.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 18:00 UTC on Friday 12th Feb

  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 Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Southeast, backing east 4 or 5, increasing 6 or 7 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      Southeast, backing northeast 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Friday 12th Feb

  12. Isle of Man * warning

    Isle of Man

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Southeast, backing east 4 or 5, increasing 6 or 7 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      Southeast, backing northeast 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Friday 12th Feb

  13. Lough Foyle to Carlingford Lough * warning

    Lough Foyle to Carlingford Lough

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Southeast, backing east later, 5 to 7, decreasing 4 at times.
    • Sea State

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

      Occasional rain at first.
    • Visibility

      Good, occasionally moderate.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      East, backing northeast, 5 or 6, decreasing 4 at times.
    • Sea State

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

      Mainly fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Friday 12th Feb

  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 Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Southeast, backing east 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      East, backing northeast 5 to 7.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 18:00 UTC on Friday 12th Feb

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Southeast, backing east, 5 to 7.
    • Sea State

      Slight or moderate, becoming moderate or rough for a time.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      East backing northeast 4 or 5, increasing 6 or 7 at times.
    • Sea State

      Moderate or rough.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    Issued at 18:00 UTC on Friday 12th Feb

  16. The Minch * warning

    The Minch

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      East or southeast 5 or 6, decreasing 4 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Showers, mainly in north.
    • Visibility

      Good.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      East 4 or 5, backing northeast 5 to 7 later.
    • Sea State

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

      Showers, mainly in north.
    • Visibility

      Good.

    Issued at 18:00 UTC on Friday 12th Feb

  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 Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Easterly or southeasterly 5 to 7.
    • Sea State

      Moderate or rough, occasionally very rough in far west.
    • Weather

      Showers, mainly in north.
    • Visibility

      Good.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      Easterly, backing northeasterly, 5 to 7, decreasing 4 for a time.
    • Sea State

      Moderate or rough.
    • Weather

      Showers, mainly in north.
    • Visibility

      Good.

    Issued at 18:00 UTC on Friday 12th Feb

  18. Shetland Isles * warning

    Shetland Isles

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      East or northeast 4 or 5, increasing 6 or 7 at times.
    • Sea State

      Moderate or rough, becoming very rough later in far northwest.
    • Weather

      Wintry showers.
    • Visibility

      Good, occasionally moderate.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 18:00 UTC on Friday 12th Feb

    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 Fri 12th Feb – 05:59 UTC Sat 13th Feb

    • Wind

      Northeast 5 or 6, occasionally 4 in the south.
    • Sea State

      Moderate or rough.
    • Weather

      Mainly fair, isolated wintry showers.
    • Visibility

      Good, but moderate or poor in any showers.

    06:00 UTC Sat 13th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Northeast 5 or 6, occasionally 4 in the south and occasionally 7 later in the north.
    • Sea State

      Moderate or rough.
    • Weather

      Mainly fair, isolated wintry showers.
    • Visibility

      Good, but moderate or poor in any showers.

    Issued at 18:00 UTC on Friday 12th Feb

  19. The Channel Islands * warning

    The Channel Islands

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    Strong wind warning

    18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

    • Wind

      Northeast or variable 3 to 5, becoming generally southerly and increasing 4 to 6 after midnight, perhaps locally 7, becoming cyclonic variable in the morning, then locally westerly 6 to gale 8 south of guernsey, otherwise northerly 5 to 6 in the afternoon.
    • Sea State

      Moderate to rather rough, locally rough in the south overnight, becoming rather rough to rough in the morning.
    • Weather

      Risk of a shower rain spreading from the west after midnight, locally heavy, becoming intermittent during the morning.
    • Visibility

      Moderate to poor in rain, otherwise moderate to good.

    18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

    • Wind

      Northerly 4 to 5, becoming mainly variable 2 to 4 in the evening, locally westerly 5 to 6 southwest of jersey at times, becoming northeasterly 3 to 5 on Sunday morning.
    • Sea State

      Rather rough or rough, with heavy swell decreasing, becoming moderate to rather rough during Sunday.
    • Weather

      Occasional rain clearing then scattered showers, becoming isolated in the afternoon risk of hail.
    • Visibility

      Moderate to poor in rain, becoming good, occasionally moderate.

    Issued at 18:00 UTC on Friday 12th Feb

Lyme Regis to Lands End including the Isles of Scilly

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Strong wind warning

18:00 UTC Fri 12th Feb – 17:59 UTC Sat 13th Feb

  • Wind

    Cyclonic 4 or 5, increasing 6 to gale 8 for a time.
  • Sea State

    Moderate or rough in east, rough, becoming very rough, occasionally high in west.
  • Weather

    Rain or showers.
  • Visibility

    Good, occasionally poor.

18:00 UTC Sat 13th Feb – 17:59 UTC Sun 14th Feb

  • Wind

    Cyclonic 4 or 5, increasing 6 or 7 for a time in west, becoming northeast 5 or 6 later.
  • Sea State

    Moderate or rough, but very rough at first in west.
  • Weather

    Rain or showers.
  • Visibility

    Good, occasionally poor.

Issued at 18:00 UTC on Friday 12th Feb