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Rabhaidh

Dé Domhnaigh 20 Lúnasa Foilsithe ag 00:00

Rabhaidh don RA

Rabhadh Aimsire

Eisithe ag an Oifig Meitéareolaíochta

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

Sunday 20 August

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.

Sunday 20 August

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

Maidir le Rabhaidh Aimsire an Met Office

Tugann an Met Office rabhaidh don phobal agus do fhreagróirí éigeandála faoi dhálaí aimsire diana nó contúirteacha a bhféadfadh beatha daoine a bheith i mbaol nó cur isteach forleathan a bheith mar thoradh orthu tríd an tSeirbhís Náisiúnta Rabhaidh Dálaí Aimsire Diana (NSWWS).

Eisíonn an Met Office rabhaidh faoi fhearthainn, sneachta, gaoth, ceo agus leac oighir. Tugtar dathanna ar na rabhaidh seo ag brath ar mheascán den dóchúlacht go dtarlóidh siad agus an tionchar a d'fhéadfadh a bheith ag na dálaí.

Tá tuilleadh eolais ar Met Office Weather Warnings Guide.

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 14 Lúnasa Foilsithe ag 10:00

Ionchas Míosúil

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

Achoimre
Still no sign of any prolonged warmth!

If your preference is towards hotter and drier weather, you will doubtless be somewhat disappointed by recent meteorological proceedings across the UK! August has thus far been rather cool and unsettled in the main. Last week brought a prolonged spell of heavy rain for large parts of eastern and southern England. In particular, some areas of Lincolnshire received well in excess of 2 inches of rain in a 36 hour period through last Tuesday and Wednesday. In stark contrast, and at the same time, western Scotland saw plenty of sunshine and highs of 21 Celsius. In fact, throughout last week, we saw a good deal of day to day change in weather conditions across the UK, with a slightly cooler than average feel, and this theme will continue as we move further into August and the start of September.

Read on to find out the details...

Dé Luain 14 Lúnasa—Dé Domhnaigh 20 Lúnasa
Sunshine and showers, turning cooler later.

After a couple of cool nights through the course of the last weekend, the working week will get off to a similarly clear and chilly start across the extreme east of the UK. Further west though, a low pressures system and its attendant weather fronts will bring outbreaks of often heavy rain, particularly for Northern Ireland, southwest Scotland and later Wales. Many central and eastern areas will stay dry with hazy spells of sunshine through most of Monday though.

Through Monday night into Tuesday, the same area of rain will gradually traverse east, giving a cloudy and wet start to Tuesday in the east, and a brighter start across western areas of the UK. The rain in the east should clear into he North Sea fairly readily though, leaving a theme of sunshine and heavy, thundery showers in place for the rest of the day.

Wednesday will most likely be a dry and bright day for all, following another relatively chilly start. Indeed, despite the sunny spells, temperatures will only just about peak at average across the UK, although conditions should still feel relatively fine in the sunnier intervals.

Overnight into Thursday will bring a further weather system in from the Atlantic, in association with an Atlantic low pressure system. The rain will clear to the east early on Thursday, leaving a legacy of sunshine, heavy thundery showers and a slightly cool feel will follow in its wake. Winds will tend to strengthen across northwestern areas of the UK too.

As we progress through the end of this week, it looks like the low pressure system that arrived close to northwestern regions on Thursday will edge away east, perhaps allowing a more settled start the weekend. At time of writing, most of the forecasting tools at our disposal are indicating that a further Atlantic low will move in to northwestern areas again to bring spells of showery weather, but there are signs that southern and eastern parts of the UK could stay drier and brighter for longer.

Dé Luain 21 Lúnasa—Dé Domhnaigh 27 Lúnasa
Events in the western Atlantic affect our forecast

It should be noted that this forecast period is beset with an unusual level of uncertainty. At time of writing, the overwhelming majority of forecast solutions offered by a range of computer models suggest that a relatively deep area of low pressure will be positioned just to the northwest of the UK. Such an eventuality would mean that northwestern regions of the UK would again be under threat of further showers or longer spells of rain, relatively low temperatures for the time of year and strong west to southwesterly winds. Conversely, such a synoptic pattern would mean that southern England will most likely enjoy the best of the weather, with lengthy dry spells and temperatures edging up into the mid-twenties.

As we move through the period, most models suggest a continuation of the theme of low pressure to the north of the UK, with pressure remaining higher to the south, which will translate to weather conditions in the UK being roughly in line with the themes mentioned above.

The source of the uncertainty in forecast details throughout this period lies in the potential for significant tropical storm activity that is anticipated across the warm waters of the Caribbean and western Atlantic. This factor may at first seem rather inconsequential to the weather closer to our shores. It should be noted though that such tropical disturbances can inject a good deal of moisture and energy into the prevailing Atlantic synoptic pattern. The knock on effect is that small perturbations can form in the Atlantic jet stream, which are often missed by the forecasting models. These perturbations can have a large effect on the track of any Atlantic lows that pass close to or over the UK. As a consequence, there is a unusually low level of confidence for the forecast details for this period. Stay in touch with the BBC weather team to find out how the forecast develops over the coming days!

Dé Luain 28 Lúnasa—Dé Domhnaigh 10 Meán Fómhair
Uncertainty continues into climatological autumn

The relatively high level of uncertainty in the forecast details described in the previous section unfortunately continue to be an issue throughout the remainder of August and into the first week of September, which is the start of the climatological autumn. At time of writing, the most likely scenario is that a strong Atlantic jet stream will continue to push weather systems in from the west to bring spells of rain, followed by intervals of sunshine and showers. Models continue to hint that high pressure will on occasion become established across the the southern half the UK, meaning that lengthier dry spells and slightly warmer than average conditions will most likely prevail across southern and eastern England, and perhaps southern areas of Wales at times.

An tseachtain seo chugainn

With summer slowly coming to an end, and at this stage no real sign of any extended periods of hot weather, can we perhaps look into September and hope that early autumn will bring us a warmer spell? Stay across the latest developments in the longer term forecast here at BBC Weather!

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 21 Lúnasa

Achoimre

Dé Domhnaigh 20 Lúnasa Foilsithe ag 03:50

Achoimre

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

Cloudy with rain in the southwest, sunny spells elsewhere.
Today

A few showers in the north, otherwise dry for many with warm sunny spells. Cloud, rain and drizzle slowly moving into the southwest, turning heavy at times. Feeling cool under cloud and rain at first, but turning more humid later.

Tonight

Rain continuing to move across the south and west, with hill fog across the southwest and feeling humid. A cool night elsewhere will patchy mist and fog in the north.

Monday

Skies clouding over for all parts. Heavy bursts of rain in the northwest, with patchy drizzle elsewhere. Some warm and humid bright spells at times in the south.

Outlook for Tuesday to Thursday

Cloud and rain affecting northern parts Tuesday and Wednesday, turning heavy and thundery at times. Elsewhere, dry with sunny spells and feeling very warm and humid. Fresher Thursday with showers.

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Uasdátaithe an uair dheireanach 08:58 BST, Dé Domhnaigh 20 LúnNíl ach físeáin réamhaisnéise béarla ar fáil