People on the West coast have noticed an increase in 'background radiation' ever since the Fall of 2012.
I imagine background levels will continue to increase.
The “background” levels depend on what type of radiation is in the backgound. If it’s gamma emitters, yeah you have a problem. Otherwise, you receive a higher dose of radiation climbing up a granite rock face than you will swimming in the Pacific Ocean.
On the bright side, due to pacific ocean currents, Alaska, Washington, and Oregon coastal cities will receive the brunt of it.
Unfortunately, the leftist libtards in San Francisco and points south in california may be spared.