the AVERAGE speed of a thunderstorm is 30-35 mph. But some tend to go overboard and go 60 mph
Yes. Fire moves with the wind, so they move at the same speed.
Wind speeds at Viking site in summer 2 to 7 m/s (5 to 16 mph) Wind speeds at Viking site in fall 5 to 10 m/s (11 to 22 mph) Wind speeds at Viking site in a dust storm 17 to 30 m/s (38 to 67 mph)
more than 200 mph.
It varies widely. The weakest have winds of about 65 mph, while the strongest have winds over 300 mph.