9th August 2019 10:08

Autumnal low bringing rain, thundery downpours and strong winds

We have low pressure on the scene today and into tomorrow, which is bringing with it some heavy rain followed by thundery downpours and high winds. It's all very reminiscent of Autumn rather than Summer, and unfortunately, the unsettled weather is set to continue for a while yet, with low pressure never too far from our shores right through next week and probably beyond. 

This incredible shot from NASA worldview satellite imagery captured the system yesterday as it was approaching the British Isles. Not something you often see in early August.

NASA worldview satellite image of the low pressure system yesterday

This morning, the low is just crossing up into southern Ireland. It'll then slowly move northeast right across Ireland through the day today, clearing Northern Ireland after midnight and head into western Scotland during the early hours.

In terms of the winds, it's mostly on its southern side where they'll be strongest, gusting up around 60mph or so in exposed parts of SW England, and up through the Irish channel later today. Then, that threat will spread further east into other parts of southern Britain later and into tomorrow. There have also been some stronger gusts under the weather front which has pushed northeast overnight bringing some heavy rain with it. It'll take until after dark to finally clear the far north of Scotland.

Behind the rain band, there are already some sharp showers into the southwest this morning, and they'll spread through the day. Some will be heavy, with hail and thunder in the mix. Nick has issued a storm forecast for today, with more details on the storm risk, and the setup causing it

Stoprm forecast map for today

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Despite the rain, wind and showers, it'll be a very warm day in the east with East Anglia and the southeast seeing highs of 24-26c. Elsewhere, 21-24c will be typical for all but the north of Scotland, which'll be trapped under the rain band and peak into the teens at best.

Overnight, the rain should finally clear the north of Scotland. But elsewhere the showers continue, and the winds will start to peak in southern England and south Wales. They'll continue to blow into Saturday as well, spreading further north into the rest of Wales and a good part of England with Lancashire and Yorkshire likely to be northern limit. Gusts of 50-65mph are likely in exposed places, which with trees in full leaf could cause some disruption. 

There are Met Office warnings in place for both the rain and wind over the next couple of days.

The showers will tend to ease in the south tomorrow, with just a scattering left. Further north with the centre of the low over Scotland, they'll be more frequent and slow-moving under lighter winds. Much like today, some will be heavy and thundery with rainfall totals quickly mounting up underneath them. 

Heavy thundery showers bringing high rainfall totals on Saturday

The low pressure system will eventually clear the northeast of Scotland on Saturday evening but it'll leave more showers in its wake. The strongest winds will ease from the southern half of Britain though, but it'll stay breezy or even blustery. 

Sunday then brings another day of sunny spells and showers. These may merge into a longer period of more persistent thundery rain in northeast England and southern/central Scotland as well. The northern half of Scotland may be best placed to avoid the majority of the showers though. 

Into next week, well it's more of the same really. Low pressure will stay in charge for the majority of the week so expect sunshine and showers to be the main theme. There'll also be the occasional longer spells of rain, some windy periods and just the odd drier, sunnier interlude.

When will the unsettled weather end?

If you're looking for hope of an end to this spell of dodgy weather, there are some signs that the final week of the month may see high pressure playing more of a part - potentially good news for the bank holiday weekend.

Pressure rising toward the end of the month - nicer weather for the bank holiday?

It's a long way off for now though. 

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