Heat warnings issued in Europe

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Eleven southern and central European countries have issued extreme heat warnings amid a brutal heatwave nicknamed Lucifer, with residents and tourists urged to take precautions and scientists warning worse could be still to come.

Authorities in countries including Italy, Switzerland, Hungary, Poland, Romania, Bosnia, Croatia and Serbia are on red alert, the European forecasters’ network Meteoalarm said, and swaths of southern Spain and France are on amber.

As temperatures in many places hit or exceeded 40C (104F) in the region’s most sustained heatwave since 2003, emergency services are being put on standby and people have been asked to “remain vigilant”, stay indoors, avoid long journeys, drink enough fluids and listen for emergency advice from health officials.

A spokeswoman for Abta, the UK travel trade organisation, reinforced the advice for holidaymakers, saying they should take sensible precautions, keep hydrated by drinking plenty of water, stay out of the sun in the middle of the day, and follow any advice issued by health authorities in specific destinations.

The highest temperature on Thursday was 42C in Cordoba, Spain, and Catania, Italy. Split in Croatia also hit 42.3C on Wednesday. The spell is forecast to peak at the weekend with temperatures of 46C or higher in Italy and parts of the Balkans.

Authorities in Italy, which is suffering its worst drought in 60 years, have placed 26 cities on the maximum extreme heat alert, including Venice and Rome. Many of Rome’s fountains have been turned off, and last week the city only narrowly averted drastic water rationing.

In Florence, the Uffizi art gallery was temporarily closed on Friday when the air-conditioning system broke down. In Hungary, keepers at Budapest zoo cooled down two overheating polar bears with huge ice blocks.

Temperatures along parts of Croatia’s Adriatic coast, including Dubrovnik, were expected to hit 42C during the day. In the Serbian capital of Belgrade there were reports of people fainting from heat exhaustion.

In the journal Environmental Research Letters, the scientists said if a similar “mega-heatwave” to that of 2003 were to occur at the end of the century, when average temperatures are widely expected to be noticeably higher after decades of global warming, temperatures could pass 50C.

The researchers noted that climate models suggest “human influence is expected to significantly increase the frequency, duration and intensity of heatwaves in Europe” and said their modelling suggested that by 2100, peak summer temperatures could rise by between 6C and 13C against historical records.

The country’s winemakers have started harvesting their grapes weeks earlier than usual due to the heat. The founder of the Slow Food movement, Carlo Petrini, said no harvest in living memory had begun before 15 August.

The heatwave is likely to cost Italy’s agricultural sector billions of euros, with as many as 11 regions facing critical water shortages. Olive yields in some areas are forecast to be down 50% and some milk production has fallen by up to 30%.

Bosnian officials said the heatwave and drought had nearly halved agricultural output, which represents 10% of the country’s economic output, and Serbia said its corn production could be cut a third.

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