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.
Engine Overheating. The prime nemesis of a head gasket is heat, caused by engine overheating. The heating leads to expansion of the blown head gasket, resulting in a breakdown. So engine overheating needs to be checked to avoid a situation where you have a blown head gasket on your hands.