For details on who can hold a JRP, see this page.
-- Japan Rail Pass: Who is eligible for a JAPAN RAIL PASS?
http://www.japanrailpass.net/eng/en002.htmlit seems that they don't pass close to the area evacuated after the nuclear disaster, but I am quite worried anyway. Is it dangerous to pass with Shinkansen through Tohoku? No, definitely not, as long as radioactivity is concerned.
Itfs more and more likely that a typhoon coming to Japan will make flights cancelled and/or Shinkansen suspended.
Please note that gFukushimah does not mean the atomic power plant. Except for its vicinity, radiation level is not notably high for a human being to stay for a few hours. I understand that evacuation is ordered or recommended to avoid a problem which might be caused by his/her staying for a long time in total.
And, I think this has been a common basic policy of Shinkansen operations since the oldest line was opened in 1964: trains should be stopped or slowed down when a serious risk is considered.
From Okayama to Sapporo just taking Shinkansens and limited expresses ( I would have then to change train in Shin Osaka, Tokyo and Shin Aomori, and it is going to last about 21 hours). I suppose you will have to change trains once between Shin-Aomori and Sapporo, for example in Hakodate.
If you can start early in the morning, you may have a chance to take a direct Hikari train from Okayama to Tokyo.
In Tokyo Station, please get out of JR Central and get into JR East, each through a ticket gate. They are located near, but I advise you to estimate at least 15 minutes.
From Okayama to Kobe Airport by train and flight to Sapporo There will be one ANA direct flight a day from Okayama Airport to New Chitose Airport.
When in this summer will you travel to Hokkaido?
Prices at an early-reservation rate differ depending on dates.
I suppose in many cases, flight charge discounts and air passes have a gblackout periodh during which they donft apply.
-- Discount Air Tickets
http://www.japan-guide.com/e/e2364.html-- Okayama Airport: Guide to facilities
http://www.okayama-airport.org/en/facility/