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Rhybuddion

Mercher 23 Ebrill Cyhoeddwyd am 00:43

Rhybuddion DU

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

Rhybudd Tywydd

Issued by the Met Office

Wednesday 23rd April 2014

There are no weather warnings in force anywhere in the United Kingdom.

Further updates will appear here.

Rhybudd Llifogydd

Issued by the Environment Agency (or by SEPA in Scotland)

Wednesday 23rd April 2014

There are no flood warnings in force anywhere in the United Kingdom.

Further updates will appear here.

Am Rybuddion Tywydd y Swyddfa Dywydd

Mae BBC Tywydd yn darparu dau fath o rybuddion tywydd a ddosbarthwyd gan y Swyddfa Dywydd: Rhybuddion a Rhybuddion cynnar.

Pan disgwylir tywydd garw, bydd Rhybuddion yn cael eu cyhoeddi o fewn y 24 awr nesaf.

Bydd Rhybuddion cynnar yn cael eu cyhoeddi mwy na 24 awr o flaen tywydd garw.

Mae yna dri categori o ddigwyddiad: Coch, Ambr a Melyn-y mwyaf difrifol yw Coch.

Mae Rhybudd a Rhybudd Cynnar sydd â'r un lliw yr un mor ddifrifol ond wedi eu darogan i gyrraedd ar adegau gwahanol. Felly, y gwahaniaeth rhwng Rhybudd Coch a Rhybudd Coch Cynnar yw amseriad y digwyddiad.

Pan mae rhybudd mewn grym, ceir gwybodaeth manwl ar Rybuddion Tywydd y Swyddfa Dywydd.

Am Rybuddion Llifogydd yr Asiantaeth Amgylchedd

Cyhoeddwyd y Rhybuddion Llifogydd gan yr Asiantaeth Amgylchedd ac Asiantaeth Gwarchod Amgylchfyd yr Alban a danfonwyd nhw i Ganolfan Dywydd y BBC. Rydym ni'n cyhoeddi crynodeb o rybuddion wedi eu seilio ar y gwybodaeth diweddaraf sydd ar gael. Pan mae rhybuddion llifogydd difrifol yn cael eu rhyddhau, bydd rhain yn cael pwyslais ar ddarllediadau Teledu.

Dysgwch mwy am Rybuddion Llifogydd

Mae yna nifer o ffyrdd y gallwch ddarganfod os mae'ch ardal chi mewn perygl o orlifo. Mae'r Asiantaeth Amgylchedd (ar gyfer Lloegr a Chymru) ac Asiantaeth Gwarchod Amgylchfyd yr Alban yn diweddaru eu rhybuddion 24 awr y dydd trwy rif.

Floodline - 0845 988 1188

Rhagolwg Misol

Llun 21 Ebrill Cyhoeddwyd am 10:00

Rhagolwg Misol

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

Crynodeb
What will the next month have in store?

In the lead up to the Easter weekend high pressure looked to be well and truly in charge of the weather with bright and sunny conditions dominating much of the UK. But, in true British style this calm weather could not quite manage to stay all the way through the bank holiday and was nudged away slowly by an area of low pressure pushing up from the south through Easter day. However, the fortunes didn't turn for everyone, Scotland, Northern Ireland and Northern England have been bathed in some glorious sunshine over the bank holiday, temperatures peaking at 19C (66F) in North West Scotland on Easter Saturday. What has the weather got for us in the coming month? Read on to find out more...

Llun 21 Ebrill—Sul 27 Ebrill
Battleground

The weather next week looks to be a real mix as a battle between easterly and westerly winds sets up. Westerly winds chose low pressure as their weapon; areas will try and push into the UK from the west and south west, especially later on in the week. Whereas, Easterly winds will be backed up by an area of high pressure sitting to the northeast of the UK. With the UK stuck in the battleground computer models are having real problems determining the winner. It looks currently like most of us will see a healthy mix of both; some sunny spells mixed equally with some showers. The far south and southwest is likely to see the most rain with the extreme north favouring best with plenty of sunnier spells.

Llun 28 Ebrill—Sul 11 Mai
What will May start like?

Although the battle doesn't look like it's going to be over as we head into May signs do point to the westerly winds taking the upper hand. Areas of low pressure should start to nudge further north with an easterly breeze bringing with them some longer spells of rain for England and Wales. Scotland and Northern Ireland should retain the lion's share of the brightness with the driest conditions. It could be fairly warm where the sun shines; through high pressure remaining to the northeast will keep an easterly breeze knocking temperatures down a couple of degrees by the coasts.

Llun 12 Mai—Sul 25 Mai
Hello westerly winds

As we look further ahead in the forecast we also may have to finally wave goodbye to the area of high pressure that has been flirting with the UK for some time. The weather looks unsettled as we move through May with areas of low pressure affecting the whole country at times. Cloudier skies for all would give temperatures below the seasonal norm and rainfall totals slightly above average.

Wythnos nesaf

As we move ahead to the forecast for June; what can we expect?

Rhagolygu Misol
Mae'r tywydd y tu hwnt i'r wythnos i ddod yn herio hyd yn oed yr arbenigwr tywydd mwyaf profiadol. Mae modelau rhagolwg rhifiadol y tywydd o'r Swyddfa Dywydd a'r Ganolfan Ewropeaidd ar gyfer Rhagolygon Tywydd Ystod-Canolig (ECMWF) yn cael eu rhedeg nifer o weithiau'r mis (a'r tymor) i ddod, er mwyn creu darlun o'r tebygoliaeth o'r gwahanol fathau o dywydd fydd yn effeithio'r DU.

Diweddariad nesaf am 10:00, Llun 28 Ebrill

Crynodeb

Iau 24 Ebrill Cyhoeddwyd am 03:36

Crynodeb

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

Mist and fog patches clearing to sunshine and isolated showers.
Today

A murky start for many with fog patches, and outbreaks of rain in the north and east. This will clear through the morning, then a mostly warm, dry and fine day, although a few sharp showers are likely in places.

Tonight

Showers will ease through the evening. Mist, fog and low cloud then spreading in from the east, with outbreaks of rain returning to eastern parts later in the night.

Friday

Cloudy in eastern areas with outbreaks of rain, heavy at times. Drier further west with some bright or sunny spells, and just isolated showers. Rain arriving in far southwest later.

Outlook for Saturday to Monday

Rain or showers for many with some heavy bursts possible, but also drier, brighter interludes. Feeling pleasant in any sunshine but colder in rain and near northeastern coasts.

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