WD3

Rhagolwg 10 diwrnod

Diweddarwyd 14:03

Codiad haul 08:08

Machlud haul 15:57

Trosolwg dydd

Heddiw

,

Uchel C 37°F Isaf C 34°F

Cwmwl ysgafn

Gwynt 3 mya 5 km/a De

Rhagolwg amgylcheddol

  • UV Isel
  • Llygredd Isel

Rhagolwg bob awr

Rhybuddion gan y Swyddfa Dywydd ar gyfer Hertfordshire

  1. Mewn grym

    Rhybudd cynnar melyn o eira

    Diweddarwyd ar 26 Rhagfyr am 08:24
    O:
    1100 ar Gwe 26 Rhagfyr
    Tan:
    0600 ar Sad 27 Rhagfyr

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

    An area of rain, sleet and snow is expected to spread eastwards across the area during Boxing Day before clearing during the evening and overnight. Some uncertainty surrounds how much snow will occur, but several centimetres of snow is likely even at low levels, especially in a swathe through Wales and the Midlands, where there is the potential for an amber warning. As precipitation clears, roads could turn very icy.

    The public should be aware of the potential for disruption from snow. Please watch for updates to this warning, especially if travelling.

Allwedd

  • Melyn:
    Byddwch yn ymwybodol
  • Ambr:
    Byddwch yn barod
  • Coch:
    Gweithredwch
  • Glaw
  • Gwynt
  • Eira
  • Rew
  • Niwl

Cyhoeddwyd gan y Swyddfa Dywydd