1 The Tri-State Tornado lasted for 3 1/2 hours, starting down at 1:01pm 3 miles NNW of Ellington, MS and dissipating at 4:30pm 3 miles SW of Petersburg, IN. 2  Average forward speed of this tornado was 62 miles-per-hour with a record setting speed of 73 miles-per-hour at one point.
The side effects of a blown head gasket include oil and coolantmixing, poor performance, and smoking.
What exactly does blown mean anyway? The head gasket in your engine is the gasket that seals the cylinder head of the engine to the engine block. There are coolant and oil passages that transfer the oil and coolant from the engine to the head and back.