Y Tywydd Merthyr Tudful

Rhybuddion tywydd
Gosodiadau
Iaith
Rhagolwg Dyddiol
Diwrnod Y Tywydd Tymheredd Uchaf Diwrnod Tymheredd Nos Isaf Cyfeiriad y Gwynt a Chyflymdra
Gwener

Heulog

5°C 41°F 1°C 34°F Gogledd Orllewinol
16km/h 10mph
Sadwrn

Cwmwl ysgafn

4°C 39°F 0°C 32°F Gogledd Gogledd Orllewinol
27km/h 17mph
Sul

Cawod o eira ysgafn

3°C 37°F -2°C 28°F Gogledd Gogledd Orllewinol
29km/h 18mph
Llun

Eira ysgafn

3°C 37°F -1°C 30°F Gogledd Orllewinol
11km/h 7mph
Mawrth

Eira ysgafn

2°C 36°F -2°C 28°F Gogleddol
23km/h 14mph

IN ASSOCIATION WITH

Rhagolwg

Codiad haul 07:53 Machlud haul 17:02

Diweddarwyd 09:43

Manylion rhagolwg tywydd ar gyfer Sul 1 Chwefror. Mae pob colofn yn cynnwys manylion rhagolygon y tywydd bob awr ar gyfer cyflyrau, tymheredd, cyflymder y gwynt cyfeiriad y gwynt, lleithder, pwysau a gwelededd.
Amser 0600 hours0900 hours1200 hours1500 hours1800 hours2100 hours0000 hours
Llu
0300 hours
Amodau Tywydd Rhannol gymylog Heulog Heulog Cawod o eira ysgafn Wybren Glir Wybren Glir Wybren Glir Wybren Glir
Tymheredd (°C/°F) 1°C 34°F 0°C 32°F 3°C 37°F 3°C 37°F 1°C 34°F 0°C 32°F -1°C 30°F -1°C 30°F
Cyflymder Gwynt (mph/km/h) 26km/h 16mph Gogledd Gogledd Orllewinol 21km/h 13mph Gogledd Gogledd Orllewinol 29km/h 18mph Gogledd Gogledd Orllewinol 26km/h 16mph Gogledd Orllewinol 19km/h 12mph Gogledd Orllewinol 16km/h 10mph Gogledd Orllewinol 13km/h 8mph Gorllewin Gogledd Orllewinol 11km/h 7mph Gorllewin Gogledd Orllewinol
Cyfeiriad Gwynt NNW NNW NNW NW NW NW WNW WNW
Lleithder 76% 73% 61% 65% 76% 82% 86% 90%
Gwelededd (Rh=Rhagorol, DI=Da iawn, D= Da, C = Cymedrol, G= Gwael, GI =Gwael iawn) DI DI DI DI DI D D D
Gwasgedd (Milibariau) 1001 1004 1005 1006 1007 1007 1007 1007

Wales

Crynodeb Rhagolwg

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

  • Outlook for Sunday to Tuesday

    Remaining very cold, and generally windy, but with a good deal of dry weather, particularly on Sunday. The risk of more widespread rain and snow later on Monday.

Rhagolwg Amgylcheddol

UV: 1

Ystod DU: 1-7

Llygredd: Isel

Ystod DU: Isel i Uchel Iawn

Rhybuddion gan y Swyddfa Dywydd ar gyfer: Merthyr Tydfil

  1. Rhybudd melyn o eira

    O:
    1030 ar Iau 29 Ionawr
    Tan:
    1100 ar Gwe 30 Ionawr
    Diweddarwyd ar 29 Ionawr am 10:20 Mewn grym

    Warning

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

    Showers of sleet, snow and hail will continue through the rest of Thursday and into Friday morning, although at lower levels there will be a gradual trend towards rain and sleet from Thursday evening onwards. This will bring a risk of further snow, especially on higher ground, along with icy stretches on untreated surfaces.

    The public should be aware of the potential for disruption to travel.This is an update to the warning issued on Monday to extend the warning a little further southeast into parts of the Midlands, and also to include ice as a hazard.

  2. Rhybudd melyn o rew

    O:
    1030 ar Iau 29 Ionawr
    Tan:
    1100 ar Gwe 30 Ionawr
    Diweddarwyd ar 29 Ionawr am 10:20 Mewn grym

    Warning

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

    Showers of sleet, snow and hail will continue through the rest of Thursday and into Friday morning, although at lower levels there will be a gradual trend towards rain and sleet from Thursday evening onwards. This will bring a risk of further snow, especially on higher ground, along with icy stretches on untreated surfaces.

    The public should be aware of the potential for disruption to travel.This is an update to the warning issued on Monday to extend the warning a little further southeast into parts of the Midlands, and also to include ice as a hazard.

  3. Rhybudd melyn o eira

    O:
    1500 ar Iau 29 Ionawr
    Tan:
    1100 ar Gwe 30 Ionawr
    Diweddarwyd ar 29 Ionawr am 10:43 Mewn grym

    Warning

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

    Showers during Thursday afternoon and evening are expected to fall increasingly as sleet, snow and hail. This may settle in places, especially from late afternoon and more especially on high ground. In addition, a more persistent spell of rain, sleet and and snow may affect the west and south of the yellow area during the early hours of Friday morning. Most areas are unlikely to see large amounts of snow but icy stretches are likely to form on untreated surfaces.

    The public should be aware of the risk of some travel disruption and difficult driving conditions.

  4. Rhybudd melyn o rew

    O:
    1500 ar Iau 29 Ionawr
    Tan:
    1100 ar Gwe 30 Ionawr
    Diweddarwyd ar 29 Ionawr am 10:43 Mewn grym

    Warning

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

    Showers during Thursday afternoon and evening are expected to fall increasingly as sleet, snow and hail. This may settle in places, especially from late afternoon and more especially on high ground. In addition, a more persistent spell of rain, sleet and and snow may affect the west and south of the yellow area during the early hours of Friday morning. Most areas are unlikely to see large amounts of snow but icy stretches are likely to form on untreated surfaces.

    The public should be aware of the risk of some travel disruption and difficult driving conditions.

  5. Rhybudd cynnar melyn o eira

    O:
    0015 ar Sul 1 Chwefror
    Tan:
    2345 ar Llu 2 Chwefror
    Diweddarwyd ar 29 Ionawr am 11:32

    Alert

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

    Further snow showers will affect parts of Scotland and Northern Ireland on Sunday leading to some locally large accumulations and the showers may spread along eastern and western coasts of England and Wales. The showers will be associated with strong winds so drifting and temporary blizzard conditions are possible as well as icy stretches. The public should be aware of the potential for disruption from these conditions.

    Snow showers are likely to continue to affect similar areas into Monday bringing further accumulations. Meanwhile, there is a risk of a more persistent spell of rain, sleet and snow affecting Wales, the Midlands and southwest England on Monday. This alert has therefore been extended into Monday and now covers these additional areas, but this is more uncertain and therefore further updates are likely in the coming days.

Mae rhestr llawn y Rhybuddion yn y DU ar dudalen Mwy am Dywydd y DU.

Allwedd

  • Coch: Gweithredwch
  • Ambr: Byddwch yn barod
  • Melyn: Byddwch yn ymwybodol

Cyhoeddwyd gan y Swyddfa Dywydd

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Fideo Rhagolwg

BBC Wales Today

Rhagolwg BBC Wales Today Diweddarwyd 06:18, Gwener 30 Ion Rhagolwg wedi’i ddiweddaru o Ddydd Llun i Ddydd Gwener yn unig Mae’r fideo yma ar gael yn Saesneg yn unig.

UK

Rhagolwg UK Diweddarwyd 00:13, Gwener 30 Ion Mae’r fideo yma ar gael yn Saesneg yn unig.

Arsylwadau

Arsylwyd am 09:00, Gwener 30 Ionawr

Ysbeidiau Heulog

4°C 39°F

14km/h 9mph Gorllewinol

Lleithder: 78%

Gwelededd: Da iawn

Gwasgedd: 983mb, Codi

Gorsaf Arsylwi: Sennybridge

(Lledred: 52.067 | Hydred: -3.617)

BBC Tywydd mewn cydweithrediad gyda'r Swyddfa Dywydd

Mae'r holl amseroedd yn GMT (Europe/London, GMT+0000) onibai y dywedir yn wahanol

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