I've been following this situation myself for a while now and I think things will be getting worse before it gets any better, as we go through some powerful planetary alignment's in the next couple of months. This huge system under yellow stone blows its top every 600,000 years or so and we are way over due for the next one!
RE: Scientists Fear "Supervolcano" Eruption As Earthquake Swarm Near Yellowstone Soars To 800