So we should just ignore all high readings ? That would be stupid considering we have 3 completely melted reactors and 4 spent fuel pools with problems located up stream from the readings.
High readings compared to what? You can find radiation almost any where you look...just because you can detect something, does not make it a high radiation level.
And again, anything that would be blown up to the jet stream and across the ocean, thousands of miles, would be so dispersed as to represent virtually no risk of significant exposure downstream.