I guess this is their response to the bombing of Hiroshima and Nagasaki.
For our friends on the left coast you have time to flee to one of those red states you hate so much and here is a little more information for you.
Exposure from x-rays or gamma rays is measured in units of roentgens. For example:
* Total body exposure of 100 roentgens (or 1 Gy) causes radiation sickness.
* Total body exposure of 400 roentgens (or 4 Gy) causes radiation sickness and death in half the individuals. Without medical treatment, nearly everyone who receives more than this amount of radiation will die within 30 days.
* 100,000 rads causes almost immediate unconsciousness and death within an hour
Enjoy the weather!