Cities need to watch the weather closely in the future to make sure that city services are always in good working order, according to a new report being studied by the City of Toronto.

That’s because the changing climate–including severe weather and warmer temperatures–may affect cities’ infrastructure. In this case, “infrastructure” refers to services that support the city, such as roads, public transit and energy plants.

The report, requested by the Toronto Environment Office, summed up the past 10 years of serious weather events in and around Toronto.

In the last decade, several records were broken due to the weather. For instance, there was one day in which there was an unusually high demand for power during a very hot summer. This kind of high demand can put a strain on the city’s ability to provide power.

An all-time record 409 mm (millimetres) of rainfall was set at Trent University during this time. Four hundred and nine millimetres is equivalent to 14 billion litres of water in five hours.

Also, in the past 10 years, Toronto had its earliest ever official heat wave.

These kinds of weather events will likely continue and could affect the infrastructure of Toronto and other cities.