When Hodgins is explaining the tensile strength of the broken glass sample to Saroyan, he gives a value of 2.63 grams per cubic centimeter, which is a value for its density, not tensile strength, which is measured in kilograms (force) per square centimeter (area).
The rainbow after the tornado is in the wrong place in the sky for the direction of the sun. Rainbows ring around the anti-solar point, that is, the point directly opposite the sun, and usually have a 42 degree radius making their rainbow too high as well.
The tornado remains over the storm cellar much longer than it really would. A tornado would normally pass over in less than 5 minutes unless it "stalled" yet the sequence lasts about 7 minutes. If it had stalled there would have been far more damage to the vehicles than there was.
When you see Michael in the crib asleep, when he stirs and rolls you can clearly see a label on his pacifier that has the name Noah which is the name of one of the twins who play him.
As a true Rock God, Angela's father should be well aware babies suffer hearing loss just as adults do. As she has no apparent effects, even after "being on tour" as an infant, it follows Michael should be shown wearing protective ear gear.