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I really can't find anything much in the conventional literature to support the claims of a doom that is any more impending now than it was a few thousand years ago. Yellowstone's been like this for a long, long time.

I did find some interesting background information HERE. Great pic of Yellowstone falls (which I filched) as well. The bottom line is that yes, Yellowstone could blow tomorrow with no warning or keep us flinching for a millennium. Or it could blow slowly. Or any one of the other dozen or so "hot spots" near the peripheries of the tektonic plates could do the same thing. It's happened before and it will happen again and there isn't a durn thing we can do about it.

But if it does happen, I'm blaming you, disturbing the magma flow with your dang lures and hooks smacking the water all the time.

I got a kick out of this information:

Snake River Plain - Yellowstone Volcanic Province

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From: Wood and Kienle, 1990, Volcanoes of North America: United States and Canada: Cambridge University Press, 354p., p.149-150, Contribution by Charles A. Wood.

An 80-kilometer-wide swath of basaltic and rhyolitic volcanism cuts across southeast Idaho for 450 kilometers. This Snake River Plain-Yellowstone (SRPY) volcanic province is the most dynamic area of volcanism in North America. This is not because of abundant historic eruptions -- there have been none -- but rather because of its rapid motion. SRPY is propagating to the northeast at 3.5 centimeters per year (Armstrong, et.al., 1975); it will slice through Montana and be at the Canadian border in approximately 20 million years. If past activity is a guide, SRPY doesn't simply cover terrain with volcanic rocks, but rather the pre-existing ground subsides up to 6 kilometers (Braile, et.al., 1982) between major faults (Sparlin, et.al., 1982) and is further churned up by the transit of magma and the formation of magma chambers. SRPY is a geologic roto-tiller.

According to the radiometric dating of Armstrong, et.al. (1975), SRPY activity began approximately 15 million years ago with silicic volcanism in southern Idaho. A series of now buried rhyolitic calderas formed in a northeast progression, with abundant basaltic volcanism lagging behind by 2-5 million years. Island Park and the two Yellowstone calderas Island Park is now being colonized by the basaltic wave of magma. ...

Oh, OK. 20 Million years from now. Let's see - will humans still even be around by then? ;-)