In Matthew 24, is Jesus talking about the tribulation period?
Yes. Matthew 24 is tribulation teaching. Jesus is speaking prophetically about the final seven years. The chapter describes events that will break loose once the tribulation begins, far exceeding the earthquakes, unruly weather, and wars already seen today. It is strictly prophetic, focused on that future period.
Les explains that as he came into Matthew 24, the chapter is all tribulation and Jesus is strictly speaking prophetically about the final seven years. He notes that while we already see a great increase in earthquakes, unruly weather, and wars that even the United Nations can't handle, it is nothing compared to what will break loose once the tribulation begins.