On Friday before leaving work I filled my Beetle up and drove home (about 15 miles). I did not drive it again until yesterday about 120 feet to wash it and access damage. It showed 19 miles on the ODO today and the tank was at about 13/16th, usually I have about 55-60 miles on it before it gets to this point.

I filled the rear tank of my F-150 before leaving work on Monday and did not drive it at all yesterday, when I left for work this morning it was on about 3/4 tank and usually does not get there for about 40-45 miles and I had only driven it 15 or so miles.

I live in the path of the Tornado that struck my area yesterday morning and luckily did not have much damage to my home or the 4 vehicles even with 8 or so 2x10x10ft boards coming down with other heavy metal roofing material and lighter debris.

I helped my neighbor change a tire on his wife's F-150 and remember smelling gasoline near it. I also recall smelling diesel near another neighbor's truck ..... So for those that may have been through something like this before, Is it possible that the fuel expanded or got sucked out of the tanks vapor system somehow by the pressure/vacuum created during the storm which passed over in about 15-20 seconds?
<!-- / message --><!-- sig -->

 

I suppose it is possible. The pressure differential caused by the storm passing through could cause the fuel to be sucked out, but I would think it would be minimal. But then again, a tornado has been known to lower the atmospheric pressure to around 26" mercury, (29.92 being standard) so 3-4" difference in a very short period of time could draw liquids out of a container. This would equate out to around 2 psi difference which is sufficient to siphon liquids.