This morning was like any other morning this week: a bright sun high above a clear, blue sky accompanied by heavy, humid air. I had to shut my windows earlier this afternoon because of the heat wafting in from the outside. At around 5pm, I saw grey clouds looming behind the hills of the city. A bolt of lightning struck behind the low hills in San Niccolò that caught my eye. And shortly after, it began to rain. When I opened the window again, the temperatures had dropped many degrees. I had to shut the window immediately because it was cold.