Minor radiation expected over California on Friday

Experts said that small amounts of radioactive isotope that escaped from the crippled Japanese nuclear power stations would blow across the Pacific in the upper atmosphere. The best guess seems to be that the radiation will be measurable but that it won't be at levels considered hazardous. Meanwhile, the dire headlines out of Japan continue tonight:

Japan tries desperate new measures at nuclear plant (LAT)

U.S. Calls Radiation ‘Extremely High,’ Sees Japan Nuclear Crisis Worsening (NYT)