UK weather: Heatwave swept away by jet stream as thundery downpours batter Britain (0.01650943396226415)

<iframe frameborder="0" height="100%" scrolling="no" src="https://www.gbnews.com/res/scraper/embed/?video_url=https%3A%2F%2Fmm-v2.simplestream.com%2Fiframe%2Fplayer.php%3Fkey%3D3Li3Nt2Qs8Ct3Xq9Fi5Uy0Mb2Bj0Qs%26player%3DGB003%26uvid%3D52955781%26type%3Dvod%26viously_id%3D4RzhSYkBj1q" width="100%"></iframe><br/><p>Crackling electric downpours threaten to drench Britain as swooping jet-stream winds sweep in an energy-laden deluge.</p><p>High pressure, the heatwave driver, will be shoved aside through the next 24 hours by volatile prowling storm systems.</p><h3></h3><br/><p>Temperatures in the 20Cs will nosedive as parts of the country brace for torrential, thundery downpours.</p><p>The jet stream will sweep southwards over the UK, pulling low pressure in from the north and storms from the south.</p><h3></h3><br/><p>Jim Dale, meteorologist for British Weather Services, said: “The hot weather will break down with the potential for torrential downpours and thunderstorms, and some of the rainfall will be extremely heavy.</p><p>“Scotland and northern Britain will see the heaviest downpours coming in from the west as the jet stream shifts closer to the UK, and temperatures will return to more normal for the time of year.</p><p>“Thursday is looking like a wet day, and the deluge will be boosted by a plume coming in from France carrying a lot of energy and picking up energy from the Channel, so there is the potential for some vigorous thunderstorms.”</p><h3></h3><br/><img alt="WXCHARTS is forecasting downpours across the UK" class="rm-shortcode" data-rm-shortcode-id="72ad7c7ad67649cd6d9abcee34294d09" data-rm-shortcode-name="rebelmouse-image" id="d0505" loading="lazy" src="https://www.gbnews.com/media-library/wxcharts-is-forecasting-downpours-across-the-uk.jpg?id=61140241&width=980"/><h3></h3><br/><div class="embed-latest"></div><h3></h3><br/><p>Baking Britons are, however, urged to make the most of the cooler respite with hot weather to return ahead of the weekend.</p><p>While not as hot as this week, southern regions will rocket back into the high-20Cs on Friday, experts warn.</p><p>Scotland and the north will stay cooler as the region sits in the path of jet-stream driven wind and rain.</p><h3></h3><br/><img alt="Jet stream sweeps across Britain" class="rm-shortcode" data-rm-shortcode-id="324bba4c5496bcdfd8e6a6d1ad1edd27" data-rm-shortcode-name="rebelmouse-image" id="7a0f6" loading="lazy" src="https://www.gbnews.com/media-library/jet-stream-sweeps-across-britain.png?id=61140247&width=980"/><h3></h3><br/><p>Met Office meteorologist Clare Nasir said: “Cloud and showery rain will arrive into Thursday morning across western Scotland and Northern Ireland, and the winds will pick up here, and during the day those showers will spread eastwards, and they could be heavy in places.</p><p>“Temperatures will come in at around 23C to 26C across England and Wales, and 18C across central Scotland.</p><p>“The air turns warmer on Friday as the winds pick up in Scotland and Northern Ireland, with some outbreaks of rain pushing eastwards.</p><h3></h3><br/><img alt="Rain on the way" class="rm-shortcode" data-rm-shortcode-id="08045b1a8d8b3ff2b44ea49bb0f54eb3" data-rm-shortcode-name="rebelmouse-image" id="876e4" loading="lazy" src="https://www.gbnews.com/media-library/rain-on-the-way.png?id=61140248&width=980"/><h3></h3><br/><div class="embed-dontmiss"></div><h3></h3><br/><p>“The outlook for Friday is for it to heat up again towards eastern and southeastern counties, and it will be warm elsewhere with some sunshine across England and Wales.”</p><p>Meanwhile, England is chilling after the second heatwave of the month ended the hottest June on record.</p><p>An average temperature of 15.2C across the UK made for the nation’s second warmest June, beaten by 2023’s 15.8C.</p><p>Further hot weather is likely, according to government forecasters, as this summer ranks with the notorious heatwave of 1976.</p><h3></h3><br/><div class="embed-mostread"></div><h3></h3><br/><p>A Met Office spokesman said: “June 2025 has been warmer than June 1976, with June 1976 now sitting as the fourth warmest on record for the UK and third warmest for England.</p><p>“As the climate continues to change, the UK is likely to see more frequent and intense heatwaves.”</p><p>A north-south split into the weekend will bring warmer temperatures to the south while the north faces heavy rain.</p><p>Jason Nicholls, AccuWeather’s lead international forecaster, said: “Northern regions are most at risk of rain on Friday, and then as we go into the weekend, it should be dry and bright for many with an ongoing risk of isolated showers in the north.”</p>