I’ve seen those when I was driving a lot, late at night. They are spectacular.
They are probably a foot or two across at most.
Lots of light is generated by little mass when it hits the atmosphere.
I was wondering about the size - it was big enough I went mentally from “cool a shooting start” -to “OMG that could hit the city” all in the course of 2 seconds. Never seen one like that, Thank you for the info.