Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

Pressure will remain high across the British Isles during the next couple of days, although the high will start to retreat eastwards 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

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Southwesterly backing southerly 4 or 5, occasionally 6 at first in north, becoming variable 3 at times later.
    • Sea State

      Slight throughout in south, but in north moderate or rough becoming slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good, occasionally poor later.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Variable mainly southerly 3 or 4, occasionally 5 near Cape Wrath and in far east.
    • Sea State

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

      Fair.
    • Visibility

      Good, occasionally poor.

    Issued at 06:00 UTC on Friday 20th Jan

  2. Rattray Head to Berwick on Tweed

    Rattray Head to Berwick on Tweed

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    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Variable mainly westerly 2 or 3, becoming southwesterly 3 or 4, occasionally 5 later in north.
    • Sea State

      Smooth or slight, occasionally moderate later in far north.
    • Weather

      Fair.
    • Visibility

      Good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Southerly 4 or 5, but variable 3 in st andrews bay and Firth of Forth.
    • Sea State

      Smooth or slight, occasionally moderate in far north.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  3. Berwick on Tweed to Whitby

    Berwick on Tweed to Whitby

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    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      West backing south 3 or less, occasionally 4 later.
    • Sea State

      Smooth or slight.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      South 3 or 4, becoming variable 2 at times.
    • Sea State

      Smooth or slight.
    • Weather

      Drizzle later.
    • Visibility

      Moderate or good, occasionally poor.

    Issued at 06:00 UTC on Friday 20th Jan

  4. Whitby to Gibraltar Point

    Whitby to Gibraltar Point

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    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Variable 3 or less, becoming southeast 3 or 4 later.
    • Sea State

      Smooth or slight.
    • Weather

      Fog patches at first in south.
    • Visibility

      Moderate or good, occasionally very poor at first in south.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Southeast 3 or 4, veering south or southwest 4 or 5 later.
    • Sea State

      Slight.
    • Weather

      Fair then drizzle.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  5. Gibraltar Point to North Foreland

    Gibraltar Point to North Foreland

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    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Variable 2 at first in north, otherwise easterly 3 or 4, occasionally 5 later.
    • Sea State

      Smooth or slight, occasionally moderate later.
    • Weather

      Fog patches at first in north.
    • Visibility

      Moderate or good, occasionally very poor at first in north.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Easterly, veering southerly later, 3 or 4, increasing 5 at times.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Drizzle for a time in north.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  6. North Foreland to Selsey Bill

    North Foreland to Selsey Bill

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    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Easterly or northeasterly 4 or 5, decreasing 3 at times later.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Moderate or good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Easterly or northeasterly, becoming variable then southerly later, 3 or 4.
    • Sea State

      Slight.
    • Weather

      Fair.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  7. Selsey Bill to Lyme Regis * warning

    Selsey Bill to Lyme Regis

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    Strong wind warning

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

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

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Moderate or good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      East or northeast, becoming variable then south later, 3 or 4.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  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

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      East or northeast 4 or 5, increasing 6 at times, then veering southeast 3 or 4 later.
    • Sea State

      Slight or moderate in east, moderate in west.
    • Weather

      Fair.
    • Visibility

      Good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      East or southeast becoming variable, 3 or 4, then becoming south 4 or 5 later.
    • Sea State

      Slight or moderate in east, moderate in west.
    • Weather

      Showers later.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  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

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Easterly 4 or 5, occasionally 6 in north.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Moderate or good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Easterly or southeasterly 3 or 4, occasionally 5 in north.
    • Sea State

      Moderate in west, slight or moderate in east.
    • Weather

      Showers later.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  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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    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      East or southeast 3 or 4, increasing 5 at times.
    • Sea State

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

      Mainly fair.
    • Visibility

      Moderate or good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

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

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

      Fair.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  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

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Easterly or southeasterly 2 or 3 increasing 4 or 5, occasionally 6 later in west.
    • Sea State

      Smooth or slight, becoming slight or moderate in northwest.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good, occasionally poor at first.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Variable 3 or 4 in Solway Firth, otherwise southeast 4 or 5, veering south 3 or 4 later.
    • Sea State

      Smooth or slight in south and east, slight or moderate in northwest.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  12. Isle of Man * warning

    Isle of Man

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    Strong wind warning

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Southeast 2 or 3 increasing 4 or 5, occasionally 6 later.
    • Sea State

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

      Fair.
    • Visibility

      Good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Southeast 4 or 5, occasionally 6 at first, veering south 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 06:00 UTC on Friday 20th Jan

  13. Lough Foyle to Carlingford Lough * warning

    Lough Foyle to Carlingford Lough

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    Strong wind warning

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Southerly 2 or 3 backing southeasterly 4 or 5, occasionally 6 later in North Channel.
    • Sea State

      Smooth or slight at first in east, otherwise slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Southerly or southeasterly 4 or 5, occasionally 6 at first in North Channel, decreasing 2 or 3 later.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 06:00 UTC on Friday 20th Jan

  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

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Southerly 2 or 3 backing southeasterly 4 or 5, occasionally 6 later in North Channel.
    • Sea State

      Smooth or slight, becoming slight or moderate except in Firth of Clyde.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Southerly or southeasterly 4 or 5, occasionally 6 at first in North Channel, decreasing 3 later.
    • Sea State

      Slight in Firth of Clyde, otherwise slight or moderate.
    • Weather

      Fair.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

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    Strong wind warning

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      South 3 or 4 backing southeast 4 or 5, occasionally 6 later.
    • Sea State

      Moderate or rough near Tiree, otherwise slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

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

      Moderate or rough near Tiree, otherwise slight or moderate.
    • Weather

      Fair.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  16. The Minch * warning

    The Minch

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    Strong wind warning

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      South or southwest 4 or 5, occasionally 3 at first, increasing 6 at times later.
    • Sea State

      Moderate or rough in far south, otherwise slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      South or southwest 5 or 6, decreasing 3 or 4 later.
    • Sea State

      Moderate or rough in far south, otherwise slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 06:00 UTC on Friday 20th Jan

  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

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Southwest backing south, 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate near Sutherland, otherwise moderate or rough.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      South or southwest 5 or 6, decreasing 3 or 4 later.
    • Sea State

      Slight or moderate near Sutherland, otherwise moderate or rough.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 06:00 UTC on Friday 20th Jan

  18. Shetland Isles * warning

    Shetland Isles

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    Strong wind warning

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Southwest 5 or 6 decreasing 4, then backing south 4 or 5 later.
    • Sea State

      Moderate or rough in west, slight or moderate in east.
    • Weather

      Drizzle at times.
    • Visibility

      Moderate or good.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 06:00 UTC on Friday 20th Jan

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

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

    06:00 UTC Fri 20th Jan – 17:59 UTC Fri 20th Jan

    • Wind

      Southwesterly 4 or 5, but 6 at first in north and occasionally 6 at first in west.
    • Sea State

      Rough in north and west, otherwise mainly moderate, but slight at times near eastern coasts.
    • Weather

      Drizzle at times.
    • Visibility

      Moderate or good.

    18:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Southwest, backing south later, 4 or 5.
    • Sea State

      Rough in north and west, otherwise mainly moderate, but slight at times near eastern coasts.
    • Weather

      Drizzle at times.
    • Visibility

      Moderate or good.

    Issued at 06:00 UTC on Friday 20th Jan

  19. The Channel Islands * warning

    The Channel Islands

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    Strong wind warning

    06:00 UTC Fri 20th Jan – 05:59 UTC Sat 21st Jan

    • Wind

      Easterly or northeasterly 4 or 5, occasionally 6 in the north of the area, veering southeasterly 3 or 4 from early evening, decreasing 2 or 3 overnight.
    • Sea State

      Slight, occasionally moderate in the north until evening.
    • Weather

      Fine, becoming rather cloudy overnight.
    • Visibility

      Good, perhaps occasionally moderate.

    06:00 UTC Sat 21st Jan – 05:59 UTC Sun 22nd Jan

    • Wind

      Southeast or variable 1 to 3.
    • Sea State

      Smooth or slight with a low swell.
    • Weather

      Fair to cloudy.
    • Visibility

      Good, perhaps occasionally moderate.

    Issued at 06:00 UTC on Friday 20th Jan