According to the Washington the earth is suffering gigantic solar storms. Thus natural disaster may destroy power grid and GPS.
gigantic solar storms
Biesecker from NOAA(National Oceanic and Atmospheric Administration) said solar storms could damage power grid, communication, GPS and all the other radio communication systems.
It is reported the solar storms have arrived in the United States on Monday afternoon. It may be lasted for several days. What’s worse the impact on the power grids across the USA still could not be estimated.