I once had a Roman candle hit me right in the chest! It burned a hole through my shirt but thankfully not through my skin, it did smart pretty good!
I was reading just today about fireworks safety in a post the local fire department put out. It had a thermostat shaped graph with different temps on it: at 212’ water boils; 350’ cakes bake; 575’ wood burns; 900’ glass melts and 1200’ sparklers! I had no idea they burned so hot!