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Rhybuddion

Mawrth 27 Medi Cyhoeddwyd am 11:09

Rhybuddion DU

Rhybudd Tywydd

Cyhoeddwyd gan y Swyddfa Dywydd

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

YELLOW WARNING for WIND for Scotland.

Issued at:10:41 on Tue 27 Sep 2016

Valid from:01:00 on Thu 29 Sep 2016

Valid to:20:00 on Thu 29 Sep 2016

Gales or severe gales are expected to develop across much of Scotland on Thursday. The strongest winds are most likely across northwestern areas, where gusts of 70 mph are possible. However, much of Scotland could see gusts of 55-60 mph.

Please be aware that potential impacts could include minor travel disruption with some bridge restrictions, and possible damage to trees and structures. Additionally, large waves will build off northern and western coasts with the risk of some wave overtopping here.

This Alert will be reviewed in the lead-up to Thursday so it is advised to keep up with the latest developments.

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.

Tuesday 27 September

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

Ynglŷn â Rhybuddion Tywydd y Swyddfa Dywydd

Mae BBC Tywydd yn darparu dau fath o rybudd tywydd gan y Swyddfa Dywydd: Rhybuddion a Rhybuddion Cynnar.

Bydd Rhybuddion yn cael eu cyhoeddi pan disgwylir tywydd garw o fewn y 24 awr nesaf.

Bydd Rhybuddion Cynnar yn cael eu cyhoeddi mwy na 24 awr cyn tywydd garw.

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

Mae Rhybudd a Rhybudd Cynnar yr un lliw yr un mor ddifrifol â’i gilydd ond eu bod 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 lawn yn Rhybuddion Tywydd y Swyddfa Dywydd (dolen allanol 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 26 Medi Cyhoeddwyd am 10:00

Rhagolwg Misol

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

Crynodeb
September draws to a close

After all the excitement that early September brought with record breaking heat and intense thunderstorms, last week's weather was a little more calm. We often saw temperatures above the seasonable norm with quite dry weather at times too. But there was some rain to be had, especially in western areas. What's around the corner though in our forecast? Read on to find out more!

Llun 26 Medi—Sul 2 Hydref
What will the final week of September bring?

September will draw to a close in a conventional autumnal style with areas of low pressure bringing wet and windy weather at times. It is likely we will see a succession of these through this coming week, the first of which on Monday, with rain arriving from the southwest bringing the risk of coastal gales too. This will then be followed by further spells of wet and windy conditions throughout the week, though there are likely to be some drier intervals too with some good spells of sunshine.

Llun 3 Hydref—Sul 9 Hydref
October has arrived; will we see a change?

Possibly. The most likely situation however is to see a continuation of the unsettled theme with wet and windy weather. It is likely that during this time we will see a northwest-southeast split start to develop with southeast England seeing the driest conditions and conversely, Scotland and Northern Ireland the wettest. But it's worth remembering, there is a chance of more settled conditions pushing across the UK, especially later in the week. This would bring the possibility of a quieter spell of weather particularly in the southeast.

Llun 10 Hydref—Sul 23 Hydref
How's mid to late October looking?

Peering further ahead, it looks likely that we will keep a classically autumnal theme. It will remain unsettled with spells of wet and windy weather interspersed with brighter and drier interludes.

Wythnos nesaf

Will that small glimmer of more settled conditions push in over the UK?

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 3 Hydref

Crynodeb

Mawrth 27 Medi Cyhoeddwyd am 13:36

Crynodeb

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

Windy in the north, rain tomorrow. Drier in the southeast.
This Evening and Tonight

Remaining windy in the north tonight, with showers continuing across northern Scotland. It'll be a drier night elsewhere, with clearer spells, though turning cloudy across Northern Ireland with rain pushing in by the end of the night.

Wednesday

Rain and strong winds in Northern Ireland will spread into Scotland during Wednesday, with some light rain or drizzle developing across western England and Wales too. Dry and bright elsewhere.

Outlook for Thursday to Saturday

Thursday, cloud and rain slowly clearing southeast, with blustery showers in the north. Very windy in Scotland. Sunshine and further blustery showers on Friday and Saturday and thunder possible too.

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