While tuning around below the 30m band on my FT-817, I heard a rather loud and clear weather broadcast on 10.051Mhz. It turned out to be a "VOLMET" broadcast from New York. These broadcasts are apparently provided for aviation purposes. Here is a page which lists the various broadcasts:
I went down to 8.858Mhz to see if I could hear the broadcasts from Honolulu that covered the west coast of the United States. I could!
Ironically, just before this I was listening to the aviation warnings for Alaska, and heard a volcanic ash warning from the Aleutian volcano, Mount Cleveland. I thought it was cool enough to fire up Google Earth and see where that was. It's pretty cool actually.