[steve86]

Ping to #55 for Idaho guys and what are your thoughts on prevailing winds in the area?

[ProtectOurFreedom]

The winds won't make much difference. USGS says North Idaho would get a one to four inches of ash. Myrddin would get a LOT more, over 3 feet (you're by IF or Pocatello, right?).

My grandma collected ash in Hayden, ID from the Mt. St. Helens eruption in 1980 and sent vials of it to all of her grandkids. I still have mine somewhere. That stuff was unbelievably fine, like talcum powder. It's astonishing how fine volcanic ash gets when all the gases dissolved in the rock blow the liquid rock to pieces when the pressure gets released.

Here's a pic from Spokane in 1980. We would feel right at home these days! Little did these kids know that they were way ahead of the times!

Click the map to go to the page and then click again to blow the map up real big.

[Myrddin]

Pocatello mainly gets wind from SW - W - NW. Under very unusual circumstances, N - NE - E. I would anticipate most ash from Yellowstone would blow east/southeast. The last big eruption laid ash all the way to the southeast of the US and to a lesser extent down to Ensenada, Mexico.

If we get a basalt flow, it will be hard to escape. Liquid rock flowing over the surface at 100 MPH would quickly inundate my area. The freeways don't have to capacity to get everyone out before that occurs.

Basalt near Inkom, ID