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Rabhaidh

Dé Luain 22 Meán Fómhair Foilsithe ag 00:12

Rabhaidh don RA

Rabhadh Aimsire

Eisithe ag an Oifig Meitéareolaíochta

Is i mBéarla amháin atá an t-inneachar seo ar fáil.

Monday 22 September

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

Rabhadh Tuile

Eisithe ag an Ghníomhaireacht Comhshaoil nó ag SEPA in Albain agus Natural Resources Wales sa Bhreatain Bheag

Is i mBéarla amháin atá an t-inneachar seo ar fáil.

Monday 22 September

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

Faoi Rabhaidh Aimsire na hOifige Meitéareolaíochta

Tugann BBC Aimsir dhá chineál rabhaidh aimsire eisithe ag an Oifig Meitéareolaíochta: Rabhaidh agus Réamhrabhaidh.

Rabhaidh -eiseofar iad seo nuair a mheasfar go mbeidh drochaimsir ann faoi cheann 24 uair.

Réamhrabhaidh -eiseofar iad seo breis agus 24 uair roimh aimsir dhian.

Tá trí chatagóir teagmhais ann, mar atá, Dearg, Ómrach agus Buí - is é Dearg an ceann is measa.

Bíonn Rabhadh agus Réamhrabhadh den dath céanna chomh trom lena chéile ach táthar á thuar go dtiocfaidh siad ag amanna difriúla. Mar sin, is é an difear idir Rabhadh Dearg agus Réamhrabhadh Dearg ná an t-am is luaithe a thiocfadh leis tarlú.

Nuair a bhíonn rabhadh i bhfeidhm, is féidir faisnéis iomlán a fháil ag Rabhaidh Aimsire na hOifige Meitéareolaíochta

Maidir le Rabhaidh Tuilte

Eisíonn an Ghníomhaireacht Comhshaoil, Scottish Environment Protection Agency agus Natural Resources Wales na rabhaidh tuilte agus cuirtear ar aghaidh chuig Ionad Aimsire BBC iad. Ansin eisíonn muid coimre rabhadh bunaithe ar an eolas is déanaí atá ar fáil. Nuair a eisítear rabhaidh tuilte troma, aibhseofar ar chraoltaí teilifíse iad chomh maith.

Faigh tuilleadh eolais faoi Rabhaidh Thuile

Tá bealaigh éagsúla ann le fáil amach an bhfuil do cheantar féin faoi bhagairt tuilte. Déanann an Ghníomhaireacht Comhshaoil, the Scottish Environment Protection Agency agus Natural Resources Wales a gcuid rabhadh a nuashonrú 24 uair sa lá tríd an uimhir Floodline.

Floodline - 0345 988 1188

Ionchas Míosúil

Dé Luain 15 Meán Fómhair Foilsithe ag 10:00

Ionchas Míosúil

Is i mBéarla amháin atá an t-inneachar seo ar fáil.

Achoimre
Feeling more like summer!

September so far has been warm and dry, quite a contrast to August which was the coldest since 1993 and the wettest since 2004. That did skew our summer's statistics away from the overall warm and dry theme characterised by June and July, so some may think it quite considerate of September doing August's work. Meteorologically speaking however we're into autumn now and the nights are getting longer and cooler, as we saw last week; the warm afternoons have followed cool and at times misty mornings.

So where might this week take us? Well, perhaps even closer to summer than we've already been enjoying. The reason for the settled weather is a blocking anticyclone which has been sitting over the UK and keeping Atlantic weather fronts at bay. In the last few days it's slipped over to Scandinavia, but continues to dominate our weather and will introduce a continental southeasterly flow across the country. This means temperatures could rise by more than five degrees above average where the sun shines. As we're only in September it's too early to call it an Indian one, but how long will this extension to summer last?

Dé Luain 15 Meán Fómhair—Dé Domhnaigh 21 Meán Fómhair
Temperatures on the rise

Despite this week's overall dry theme for the UK, rain greeted central and eastern parts on Monday morning. This will become increasingly confined to eastern Scotland through today. Otherwise it's mainly fine with sunny spells, but some showers will possible in central and eastern areas. For the rest of the week it will be dry with sunny spells for most, and thanks to that southeasterly flow it will become very warm by Thursday in parts of the south and west. Areas of cloud are expected to continue affecting northeastern parts of the country at times, with some occasional spots of rain or drizzle. There is a chance of some showers in the southwest at times, but these will be isolated, and the fine weather should persist through the weekend.

Dé Luain 22 Meán Fómhair—Dé Domhnaigh 28 Meán Fómhair
The anticyclone's dominance diminishes

Areas of high pressure are known for being stubborn and difficult to shift. Sometimes weather forecast models can be too quick to move on these blocking highs, so such situations can be characterised by noticeable disagreement between different computer models. The presence of a tropical weather system, Edouard, in the Atlantic this week is also likely to add uncertainty into next week's forecast, even though most weather models seem to suggest currently that it will remain in the Atlantic and be steered towards the Azores. All this considered it seems likely at the time of writing that the settled, anticyclonic weather will continue into the first part of next week. It may turn windy and more changeable in the northwest towards the end of next week, with an increasing risk of showers or spells of rain, but the southeast should mostly remain fine.

Dé Luain 29 Meán Fómhair—Dé Domhnaigh 12 Deireadh Fómhair
Change of month, change of weather?

It seems fairly common to be writing about a change in weather type as we approach a change in month, and it seems that this forecast will not present an exception to that rule. However, having noted above the tendency for weather models to trend towards a more Atlantic-influenced weather pattern rather more soon than a blocking area of high pressure would wish to allow, confidence is lower for such a change. Nevertheless, model consensus favours somewhat changeable conditions for the end of September and early October, with settled weather interspersed with occasional unsettled spells. The drier periods with some warm sunshine are expected to be most prolonged across the south and east, whilst outbreaks of rain may tend to be most frequent across the north and west. During the more settled conditions daytime temperatures are likely to be around and often above average, although chilly overnight with a risk of fog patches. During any unsettled spells daytime temperatures are likely to be below or close to average.

An tseachtain seo chugainn

Will we see a genuine Indian summer?

Réamhaisnéisiú míosúil
Ní furasta an aimsir a thuar níos faide ná seachtain nó mar sin chun tosaigh, fiú don réamhaisnéiseoir is mó taithí. Déantar samhaltáin uimhriúla casta a fháil ón Oifig Meitéareolaíochta agus ón Lárionad Eorpach do Réamhaisnéisí Aimsire Meánraoin (ECMWF) agus déantar iad a rith a lán uaireanta don mhí (agus don séasúr) atá le theacht. Ar an dóigh sin, cruthaítear pictiúr den dóchúlacht go rachadh cineálacha éagsúla aimsire i bhfeidhm ar an RA.

An chéad uasdátú eile ag 10:00, Dé Luain 22 Meán Fómhair

Achoimre

Dé Luain 22 Meán Fómhair Foilsithe ag 04:42

Achoimre

Is i mBéarla amháin atá an t-inneachar seo ar fáil.

Dry and fine for most, but rain in far northwest.
Today

A cold start this morning, with a few localised mist and fog patches, then dry and fine for most once again. However rain will edge across northwest Scotland, then into Northern Ireland and the rest of Scotland into the evening.

Tonight

The cloud and rain will continue to push southeastwards overnight, possibly just about reaching northern parts of northern England by dawn. Elsewhere, dry, clear and cold once again.

Tuesday

The band of cloud and occasional rain will continue southwards, across the rest of northern England and north Wales by evening. Largely dry and fine either side.

Outlook for Wednesday to Friday

Cloud and rain clearing southwards on Wednesday with the odd shower following. Largely cloudy on Thursday and Friday with outbreaks of rain or drizzle for many. Breezy throughout, especially Thursday.

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UK Físeán Réamhaisnéise

Réamhaisnéis UK Uasdátaithe an uair dheireanach 07:47, Dé Luain 22 MFómh Is i mBéarla amháin atá fiseáin réamhfhaisnéise ar fáil