According to reports, 10 people were rescued after being trapped. Another 20 people were evacuated from the cargo area of Malpensa airport. In videos posted on social media, cars can be seen submerged underwater at the airport.
The Italian Department of Civil Protection has issued a weather warning for 11 regions.
They warned there was a risk of heavy downpours and potentially hail.
They reported that these adverse conditions will continue until Friday.
Yalc Aydun said on Twitter: “The road leading to Malpensa T1 and Sheraton station submerged in water. “
There are reports that flights were diverted from the airport this evening.
Vola Malpensa reported on social media that only five planes are heading to Milan in Europe at the moment.
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Up to 50 residents were trapped in homes when a landslide caused a gas leak in Brienno, on the lake’s western shore.
Agricultural lobby group Coldiretti says extreme weather conditions have intensified in recent years and said: “ We are confronted in Italy with the consequences of climate change, with a tendency to tropicalization and the multiplication of extreme events. “
Like many parts of Europe, Italy was also hit by severe forest fires during the summer.
Syracuse in Sicily recorded a high of 48.8 ° C during the summer, according to forecasters.