Scorching, potentially record-setting temperatures in Europe on Thursday are causing trouble for rail commuters.

In the UK, where temps were predicted to reach a record 102 degrees, trains were ordered to run more slowly amid mass cancellations of rail service in the area.

Temperatures of the rails in the sunshine can skyrocket past 122 degrees, leaving the rails at risk of buckling, according to the UK’s Independent.

“We’re strongly advising customers not to travel on Thursday 25 July,” the UK’s East Midlands Train said in a tweet.

Other UK train operators urged commuters to only travel if necessary as a heat wave blasts across Europe.

The heat wave has already broken record temperatures in Belgium, Germany and the Netherlands.

On Thursday, Britain and the French capital of Paris could see their highest-ever temperatures.

The mercury is forecast to rise in Paris to as much as 105 degrees.

By Thursday afternoon in the UK, the maximum July temperature record was broken in Heathrow, London, as the mercury rose to 98 degrees, according to the Met Office.

With Post wires