The second of your two links makes WVa look like a paradise; and if we accept that the earth rotates slower when more mass is located at the equator, the current trend would lead one to think that we are slowly but steadily speeding up as the mass moves toward the poles thereby creating the depressed Artic sea levels discussed here earlier.
The Earth's rotation has been slowing ever since it formed, and a day is several hours longer now, than it was 4 billion years ago.
This is caused by tidal linkage of the Earth and the moon. The Earth turns in about 24 hours, and it takes the moon almost a month to go around in the same direction. The moon raises tides on the Earth, which place a drag on the Earth's rotation. The gravitational linkage also pulls the moon into a higher and higher orbit.