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Rhybuddion

Sadwrn 26 Gorffennaf Cyhoeddwyd am 00:47

Rhybuddion DU

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

Rhybudd Tywydd

Issued by the Met Office

Saturday 26 July

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

Rhybudd Llifogydd

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

Saturday 26 July

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

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 Gorffennaf Cyhoeddwyd am 10:00

Rhagolwg Misol

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

Crynodeb
Phew, what a scorcher

Well it was for some parts of the UK. The temperature continued to build last week reaching a peak on Friday. Gravesend in Kent reached 32.3 Celsius, the warmest day of the year so far. Further north across the country, although warm, not the hot or very muggy conditions experienced in the south.

It was the hot and very humid weather which were the main ingredients in producing explosive bursts of energy resulting in the severe storms on Thursday night and over the weekend. The storms were caused by very warm air feeding up from Spain clashing with cooler air trying to make in-roads from the Atlantic. This set up is known as the Spanish Plume.

Llun 21 Gorffennaf—Sul 27 Gorffennaf
The heat is still on

Although not as hot as on Friday, still some very warm weather for the coming week and the very warm conditions extending up into Scotland and across Northern Ireland at times. This is good news for the opening ceremony and the start of the Commomwealth Games in Glasgow. Not everyone experiencing the very warm weather around the eastern coastal areas of Scotland and England will have onshore breezes bringing cooler conditions.
Apart from temperatures, there will also be a lot of dry and settled weather during the week giving some respite from the severe thunderstorms. However the heat will build again as we go though the week and we could well see thundery showers developing towards the end of the week, especially over central and southern England. The storms will be much smaller, less intense features than we have seen recently.

Llun 28 Gorffennaf—Sul 3 Awst
All eyes on Glasgow

The Commonwealth games will be in full swing and with a lot of events outdoors then clearly weather will play a big part in the enjoyment for spectators and the performance of the athletes.
High pressure looks like dominating the weather well into next week, centred across more northern parts of the UK. Dry and settled conditions with plenty of sunshine will be exptected for many places. There will be a chance of some showers feeding in from the Continent to more southern areas. We will see temperatures falling a little during the week but still very much on the warm side for the start of August.

Llun 4 Awst—Sul 24 Awst
Football season kicks off. Will weather play ball?

No sooner has the dust settled on the World Cup and the time has come for the various league seasons to kick off.
Well at this stage although signs of less settled weather beginning to edge in across the Country, still a lot of dry weather but an increasing risk of showers or some longer spells of rain as we head into the middle part of August, more especially over northern and western areas. The driest, brightest weather will be across southern and eastern areas but even here some showers developing. Temperatures still expected to remain a little above average for the first half of August..

Wythnos nesaf

Will the heatwave return?

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 Gorffennaf

Crynodeb

Sadwrn 26 Gorffennaf Cyhoeddwyd am 03:37

Crynodeb

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

Rain in the north. Mainly dry, warm and sunny elsewhere.
Today

Fine, dry and warm for most, locally hot in southeast England. However, rain with some heavy bursts will move east across northern parts. A few showers, locally heavy, are possible elsewhere and most likely in southeast England.

Tonight

Showery rain, locally heavy, continuing in the north. Elsewhere, mainly dry with variable cloud. A freshening northwesterly breeze, strong in the northwest. Feeling fresher than previous nights in the northwest.

Sunday

Showery rain in the northwest erratically moves southeastwards and fragments through the day. Best of the sunshine in the south and southwest. Temperatures near normal, still warm in the southeast.

Outlook for Monday to Wednesday

Sunshine and showers on Monday, with a risk of thunder in the south. From Tuesday, rain in the northwest, elsewhere mainly dry with sunny spells and isolated showers.

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UK Fideo Rhagolwg

Rhagolwg UK Diweddarwyd 23:26, Gwener 25 Gor Mae’r fideo yma ar gael yn Saesneg yn unig.