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Rhybuddion

Sadwrn 18 Chwefror Cyhoeddwyd am 03:17

Rhybuddion DU

Rhybudd Tywydd

Cyhoeddwyd gan y Swyddfa Dywydd

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

Saturday 18 February

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

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.

Saturday 18 February

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

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 13 Chwefror Cyhoeddwyd am 10:00

Rhagolwg Misol

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

Crynodeb
Time to see what spring will bring

We're entering the final weeks of winter and heading into spring, meteorologically speaking, of course. With thoughts turning to blooming flowers, baby animals and leaves returning to the trees, it looks as though the weather will play ball. We can expect something a little less cold and damp than we've seen of late, perhaps even with some early spring sunshine, although it won't be uninterrupted blue skies, as the threat of rain will never be too far away.

Llun 13 Chwefror—Sul 19 Chwefror
Slowly becoming milder

This week will see a slow transition from the recent cold and cloudy conditions into something a little sunnier, drier and most noticeably milder. We start the week, however, still on a cold note with cloudy conditions for many to get the day underway on Monday. Strong winds will drive the clouds away and sunny skies will follow behind from the south and any remaining rain will be confined to the eastern side of Scotland, and even here it will ease through the day. Tuesday will see a little rain moving into western parts and Wednesday will bring a few showers too, but for the most part, the week will end on a dry note. Days will be mainly sunny with light winds and temperatures reaching double figures, but by night we could still see a frost some areas of fog.

Llun 20 Chwefror—Sul 26 Chwefror
Unsettled weather is on the way

The settled weather that much of the UK will have to begin this week will start to be replaced by showers or longer spells of rain moving in from the southwest. There will still be brighter interludes, but these will be less frequent the further west you are and much more prolonged in the east. As spells of unsettled weather roll through, we're likely to see strong winds at times, particularly in the northwest where gales are likely at times. Temperatures will be around average for the time of year but with strong winds it will most likely feel cold and in any brief settled interludes, overnight temperatures could get low enough for some frost.

Llun 27 Chwefror—Sul 12 Mawrth
How will spring begin?

As we end February and head into the first month of meteorological spring the weather looks fairly unsettled across the UK. We are likely to see weather systems moving in to the UK from the Atlantic bringing strong winds and rain at times, this felt most in the north and west. In between these weather systems we should also get some quieter spells with lighter winds and clearer skies for a time, most frequently in the south and east. Temperatures are likely to be around average for the time of year. With any clear skies by day it will feel pleasant, but clear skies by night could still bring frosty and foggy mornings.

Wythnos nesaf

Now we're well into spring, does that mean we're done with frost and snow?

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 20 Chwefror

Crynodeb

Sul 19 Chwefror Cyhoeddwyd am 15:40

Crynodeb

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

Very mild but also quite cloudy and breezy.
This Evening and Tonight

Cloudy and damp across the west of the UK with hill fog, and some persistent rain and strong winds across the north later in the night. Turning cloudy elsewhere with a little light rain through the early hours. Mild.

Monday

Mild and windy, with some rain across western Britain and a good deal of cloud generally. Some sunshine downwind of high ground though, where temperatures will be highest.

Outlook for Tuesday to Thursday

Changeable with areas of cloud, rain and possibly hill snow moving across the UK, though Wednesday currently the brightest day. Increasingly windy, with severe gales possible on Wednesday and Thursday.

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