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Rhybuddion

Gwener 24 Chwefror Cyhoeddwyd am 09:01

Rhybuddion DU

Rhybudd Tywydd

Cyhoeddwyd gan y Swyddfa Dywydd

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

YELLOW EARLY WARNING of RAIN for NORTHWEST ENGLAND

Issued at 10:03 on Thu 23 Feb

Valid from 00:05 on Sat 25 Feb

Valid to 23:55 on Sat 25 Feb

Heavy and persistent rain is expected to affect northwest England on Saturday.

Please be aware of the possibility of localised flooding and minor travel disruption.

Rhybudd Llifogydd

Rhybudd gan Asiantaeth yr Amgylchedd neu gan SEPA yn yr Alban a Chyfoeth Naturiol Cymru yng Nghymru

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

FLOOD WARNING

Update 23 February at 22:28

There is a flood warning in force in the following region:

NORTHEAST (1)

Further updates will appear here.

Ynglŷn â Rhybuddion Tywydd y Swyddfa Dywydd

Mae’r Swyddfa Dywydd yn rhybuddio’r cyhoedd a’r rhai sy’n ymateb i argyfyngau o dywydd garw ac enbyd a allai fod yn beryglus i fywyd neu a allai gael effaith eang, drwy’r Gwasanaeth Rhybudd Tywydd Garw Cenedlaethol (NSWWS).

Mae’r Swyddfa Dywydd yn darparu rhybuddion am law, eira, gwynt, niwl a rhew. Bydd lliw yn cael ei roi i bob rhybudd, yn dibynnu ar gyfuniad o debygrwydd hyn yn digwydd a’r effaith gallai ei gael.

Am fwy o wybodaeth, darllenwch Ganllaw Rhybuddion Tywydd y Swyddfa Dywydd (dolen Saesneg).

Ynglŷn â Rhybuddion Llifogydd

Mae’r rhybuddion llifogydd yn cael eu cyhoeddi gan Asiantaeth yr Amgylchedd, Scottish Environment Protection Agency a Chyfoeth Naturiol Cymru, a’u hanfon at Ganolfan Dywydd y BBC. Yna rydyn ni'n cyhoeddi crynodeb o rybuddion wedi eu seilio ar y wybodaeth ddiweddaraf 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 chi ddarganfod os yw eich ardal chi mewn perygl o lifogydd. Mae Asiantaeth yr Amgylchedd, Scottish Environment Protection Agency a Chyfoeth Naturiol Cymru yn diweddaru eu rhybuddion 24 awr y dydd trwy rif Floodline.

Floodline - 0345 988 1188

Rhagolwg Misol

Llun 20 Chwefror Cyhoeddwyd am 10:00

Rhagolwg Misol

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

Crynodeb
What a difference a week can make.

Last week started off on a dry, cold and chilly note with a widespread frost. Wednesday marked a transition to a much milder theme across the UK. As we head into this week, we can expect to see some very mild temperatures, some very windy weather, outbreaks of rain and well as the return to chilly conditions. It looks suspiciously like spring time in the UK!

Llun 20 Chwefror—Sul 26 Chwefror
A mild start but a cold finish!

We start off the new working week on an exceptionally mild night, in fact the mildest night of the year so far for most of the UK. It will be a very windy day across the northern half of the UK with outbreaks of rain in the northwest. The rest of the UK will be fairly cloudy and there will be patchy rain across Wales and southwest England. However, eastern parts of England will see good breaks in the cloud, and in the sunshine a few spots could get up to 17C. In general though, it will be a mild day with temperatures widely reaching 14C.
On Tuesday, there will be further rain and strong winds across Scotland and it will be a colder day here. It will be a windy day too with Northern Ireland and northern England with showery rain. Breezy elsewhere with rain on and off through the day.
Wednesday marks a shift to colder weather as a front sweeps across the country introducing much colder air and it will feel quite wintry again. There will be gales or severe gales in the north and east and it will be windy elsewhere.
As we approach the end of the week, we see a deep area of low pressure speed through bringing strong winds and rain and we end the week on a cold but drier note, about 7 degrees colder than we started the week!

Llun 27 Chwefror—Sul 5 Mawrth
Day on day changes.

As we head into meteorological spring, the Atlantic comes to life again and we see rain and strong winds pushing through. The general signal is for the strongest of the winds to push into the far northwest of the UK. Temperature wise it looks very similar to this week, and we will see a wide variety of temperatures. That's nothing unusual for this time of year but none the less day on day changes as a mobile pattern continues to be signalled. There are suggestions in some of the computer models that we could see a spell of heavy rain with the possibility of further snow showers across the high ground of northern England and Scotland.

Llun 6 Mawrth—Llun 20 Mawrth
Looking further ahead.

As we head into March the climate computer models suggest that we are unlikely to see anything out of the ordinary for this time of year. There is the continued risk of having temperatures cold enough for some snow showers across northern England and Scotland and for some overnight frosts. However the frequency of frosts occurring further south will be less likely. There is however a small cluster of computer models that hint at a more prolonged cold spell, which is most probable later and should it occur is likely to be dry and cold.

Wythnos nesaf

Find out how meteorological and astronomical spring are shaping up.

Rhagolygu Misol
Mae rhagolygu’r tywydd hirach nag wythnos ymlaen llaw yn her i hyd yn oed yr arbenigwr tywydd mwyaf profiadol. Mae modelau rhagolwg rhifiadol y tywydd gan y 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 dyfalu sut dywydd fydd yn effeithio ar y DU.

Diweddariad nesaf am 10:00, Llun 27 Chwefror

Crynodeb

Gwener 24 Chwefror Cyhoeddwyd am 02:40

Crynodeb

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

Cold and bright. Turning wet and windy in the north-west.
Today

It will be a cold and bright start with patchy frost and the risk of ice. England and Wales will remain fine and cold with lighter winds, but across western Scotland and Northern Ireland it will become wet and windy.

Tonight

Unsettled weather will arrive overnight with gales in the north-west and persistent rain across western Scotland and north-west England. Further south it will be drier but cloudy. Mild for all.

Saturday

Wet and windy weather will spread southwards, with persistent rain on western upslopes of England and Wales. Little rain will reach the east and the north-west will turn drier. Mild.

Outlook for Sunday to Tuesday

Staying unsettled over the next few days with spells of wet and windy weather for many. Turning colder next week with sunshine and blustery showers, these wintry on the hills.

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