Just in case...be prepared Alaska, West Coast Canada and US,

If nothing happens - thats great - but be prepared.

Accuweather has wind trajectory maps:

"A state of emergency was declared on Sunday at a nuclear power plant in Onagawa, Japan, as well. Excessive radiation levels have been recorded following Friday's earthquake, according to the United Nations' atomic watchdog agency..."

http://www.accuweather.com/blogs/news/story/46940/winds-at-japan-power-plants-sh-1.asp

http://squall.sfsu.edu/gif/jetstream_pac_loop.gif

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