Hi John, http://www.cdc.noaa.gov/~cas/Climo/polys/arizona.html Very interesting site! BEE-Lers will do well to bookmark it. It appears Flagstaff in not that much different that the tundra north of Albany, NY. I hope Murry's point about latitude being a limiting factor holds water. It will be interesting to see how the AHB migration plays out. Sincerely, Aaron Morris