I like to observe the weather, and something's off with it over the past few years

I like to observe the weather a lot, and spend much of my time just looking at the clouds. I look at the sky about once every few hours over the past several years. Thinking or wondering whether or not climate change is actually happening? Here's something interesting and perhaps troubling; It's been about four years since I've seen a Cumulonimbus clouds. And it's been actually quite a while since I've seen those interesting cumulus clouds that were once a common occurrence. It's been about four years since any significant weather warnings or watches were issued in my area, and it's been four years, going on 5, since any major tornadoes or any tornado outbreaks have occurred. That's something that they're not telling us in the news. Yet, major tornadoes were once a common occurrence before 2014. My question? Why is this happening?!