Thanks, you are most kind, and the same for you.
Volcanology isn't one of my strong suits. I know that some mountains are more predictable than others, but in the case of the Yellowstone caldera, with a frequency of 600,000 years and with the enormous scale of each eruption, deriving a history with which to predict the timing, scale, and damage due to the next eruption with a useful degree of accuracy is nigh on impossible. The number of eruptions whose effects we can detect don't make for much of a baseline.
The deaths from falling ash from a supervolcano are only the beginning. Suffice it to say that blam's characterization of the resulting changes in weather and crop production are likely. Here's an interesting take from Revelation 8 for all the millennialists out there:
REV 8:6 And the seven angels which had the seven trumpets prepared themselves to sound.
REV 8:7 The first angel sounded, and there followed hail and fire mingled with blood, and they were cast upon the earth: and the third part of trees was burnt up, and all green grass was burnt up.
REV 8:8 And the second angel sounded, and as it were a great mountain burning with fire was cast into the sea: and the third part of the sea became blood;
REV 8:9 And the third part of the creatures which were in the sea, and had life, died; and the third part of the ships were destroyed.