Y Tywydd Rhagolwg Llongau

Gosodiadau
Iaith

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

Map of shipping forecast areas

The general synopsis at 1800

Low 150 miles west of Shannon 1001 expected Malin 1008 by 1800 Friday

Issued 21 September 23:15 UTC

  1. Viking

    Gale Warning: Gale warning issued 21 September 21:42 UTC

    Southeasterly gale force 8 increasing severe gale force 9 imminent

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    • Wind

      In west, cyclonic 5 to 7 becoming variable 4. In east, southeasterly 6 to gale 8, occasionally severe gale 9 at first in north, decreasing 5 at times later.
    • Sea State

      In west, moderate or rough, becoming moderate. in east, very rough, becoming moderate or rough.
    • Weather

      In west, rain then fair. In east, rain at times.
    • Visibility

      In west, good, occasionally poor at first. In east, good, occasionally poor.
  2. North Utsire

    Gale Warning: Gale warning issued 21 September 15:44 UTC

    Southeasterly gale force 8 continuing

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    • Wind

      Southeasterly 6 to gale 8, decreasing 5 at times later.
    • Sea State

      Moderate or rough.
    • Weather

      Rain at times.
    • Visibility

      Good, occasionally poor.
  3. South Utsire

    Gale Warning: Gale warning issued 21 September 15:44 UTC

    Southeasterly gale force 8 continuing

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    • Wind

      Southeasterly 6 to gale 8, decreasing 5 at times later.
    • Sea State

      Moderate or rough.
    • Weather

      Rain at times.
    • Visibility

      Good, occasionally poor.
  4. Forties

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    • Wind

      In east, southerly 5 or 6 becoming variable 4. In west, variable 3 or 4 becoming southerly 4 or 5.
    • Sea State

      In east, rough at first in far northeast, otherwise slight or moderate. in west, slight or moderate.
    • Weather

      In east, rain then fair. In west, mainly fair.
    • Visibility

      In east, good, occasionally poor at first. In west, moderate or good.
  5. Cromarty

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    • Wind

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

      Slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.
  6. Forth

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    • Wind

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

      Slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.
  7. Tyne

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    • Wind

      Variable 3 or 4 becoming southerly 4 or 5.
    • Sea State

      Slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.
  8. Dogger

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    • Wind

      In west, variable 3 or 4 becoming southerly 4 or 5. In east, southerly 4 or 5 becoming variable 3.
    • Sea State

      In west, slight or moderate. in east, moderate becoming slight.
    • Weather

      In west, mainly fair. In east, rain then fair.
    • Visibility

      In west, moderate or good. In east, good, occasionally poor at first.
  9. Fisher

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    • Wind

      Southeasterly, becoming cyclonic later, 4 or 5, occasionally 6 in north.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally poor.
  10. German Bight

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    • Wind

      Southerly 4 or 5 becoming variable 3 or 4.
    • Sea State

      Slight or moderate, becoming slight.
    • Weather

      Showers.
    • Visibility

      Good, occasionally poor.
  11. Humber

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    • Wind

      In east, southerly 4 or 5 becoming variable 3 or 4. In west, variable 3 or 4.
    • Sea State

      In east, slight or moderate, becoming slight. in west, slight.
    • Weather

      In east, showers. In west, showers then fair.
    • Visibility

      In east, good, occasionally poor. In west, moderate or good.
  12. Thames

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    • Wind

      Variable 3 or 4.
    • Sea State

      Slight.
    • Weather

      Showers then fair.
    • Visibility

      Moderate or good.
  13. Dover

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    • Wind

      Variable 3 or 4.
    • Sea State

      Slight.
    • Weather

      Showers then fair.
    • Visibility

      Moderate or good.
  14. Wight

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    • Wind

      Variable 3 or 4.
    • Sea State

      Slight.
    • Weather

      Showers then fair.
    • Visibility

      Moderate or good.
  15. Portland

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    • Wind

      Variable 3 or 4 becoming southerly or southwesterly 4 or 5.
    • Sea State

      Slight or moderate.
    • Weather

      Rain at times later.
    • Visibility

      Good, occasionally moderate later.
  16. Plymouth

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    • Wind

      Variable 3 or 4 becoming southerly or southwesterly 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate becoming moderate or rough.
    • Weather

      Rain at times later.
    • Visibility

      Good, occasionally moderate later.
  17. Biscay

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    • Wind

      In northwest, variable 3 or 4 becoming southerly or southwesterly 4 or 5. In southeast, northerly veering easterly 3 or 4, increasing 5 later in west.
    • Sea State

      Slight or moderate.
    • Weather

      In northwest, rain at times later. In southeast, showers.
    • Visibility

      In northwest, good, occasionally moderate later. In southeast, good.
  18. Trafalgar

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    • Wind

      Northerly or northeasterly 5 or 6, but mainly variable 3 or 4 in west.
    • Sea State

      Moderate.
    • Weather

      Fair.
    • Visibility

      Good.
  19. FitzRoy

    Gale Warning: Gale warning issued 21 September 15:44 UTC

    Southwesterly gale force 8 expected soon

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    • Wind

      In southeast, northerly or northeasterly 5 or 6, but mainly variable 3 or 4 in west. In northwest, southwesterly backing southerly 6 to gale 8, decreasing 4 or 5 for a time.
    • Sea State

      In southeast, moderate. in northwest, moderate or rough.
    • Weather

      In southeast, fair. In northwest, rain or showers.
    • Visibility

      In southeast, good. In northwest, good, occasionally poor.
  20. Sole

    Gale Warning: Gale warning issued 21 September 15:44 UTC

    Southwesterly gale force 8 imminent

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    • Wind

      Southwesterly backing southerly 6 to gale 8, decreasing 4 or 5 for a time.
    • Sea State

      Moderate or rough.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally poor.
  21. Lundy

    Gale Warning: Gale warning issued 21 September 15:44 UTC

    Southwesterly gale force 8 expected later

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    • Wind

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

      Slight or moderate becoming moderate or rough.
    • Weather

      Rain for a time.
    • Visibility

      Good, becoming moderate or poor for a time.
  22. Fastnet

    Gale Warning: Gale warning issued 21 September 15:44 UTC

    Southwesterly gale force 8 expected soon

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    • Wind

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

      Moderate or rough.
    • Weather

      Rain for a time.
    • Visibility

      Good, becoming moderate or poor for a time.
  23. Irish Sea

    Gale Warning: Gale warning issued 21 September 15:44 UTC

    Southwesterly gale force 8 expected later

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    • Wind

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

      Slight or moderate becoming moderate or rough.
    • Weather

      Rain for a time.
    • Visibility

      Good, becoming moderate or poor for a time.
  24. Shannon

    Gale Warning: Gale warning issued 21 September 03:45 UTC

    Southerly gale force 8 expected later

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    • Wind

      South or cyclonic 6 to gale 8, decreasing 4 or 5 for a time.
    • Sea State

      Moderate or rough, occasionally very rough.
    • Weather

      Rain or thundery showers.
    • Visibility

      Good, occasionally poor.
  25. Rockall

    Gale Warning: Gale warning issued 21 September 15:44 UTC

    Southerly gale force 8 expected soon

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    • Wind

      South or cyclonic 6 to gale 8, decreasing 4 or 5 for a time.
    • Sea State

      Moderate or rough.
    • Weather

      Rain or thundery showers.
    • Visibility

      Good, occasionally poor.
  26. Malin

    Gale Warning: Gale warning issued 21 September 15:44 UTC

    Southerly gale force 8 expected later

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    • Wind

      South or cyclonic 6 to gale 8, decreasing 4 or 5 for a time.
    • Sea State

      Moderate or rough.
    • Weather

      Rain or thundery showers.
    • Visibility

      Good, occasionally poor.
  27. Hebrides

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    • Wind

      Southerly backing southeasterly 4 or 5, increasing 6 at times.
    • Sea State

      Moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally poor.
  28. Bailey

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    • Wind

      Southerly backing southeasterly 4 or 5, increasing 6 at times.
    • Sea State

      Moderate, occasionally rough.
    • Weather

      Showers.
    • Visibility

      Good.
  29. Fair Isle

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    • Wind

      Variable 3 or 4 becoming southerly or southeasterly 4 or 5, increasing 6 at times.
    • Sea State

      Moderate.
    • Weather

      Showers.
    • Visibility

      Good.
  30. Faeroes

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    • Wind

      Southerly backing southeasterly 4 or 5, increasing 6 at times.
    • Sea State

      Moderate.
    • Weather

      Showers.
    • Visibility

      Good.
  31. Southeast Iceland

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    • Wind

      Southerly backing southeasterly 4 or 5, increasing 6 at times.
    • Sea State

      Moderate, occasionally rough.
    • Weather

      Showers.
    • Visibility

      Good.