Space Weather Prediction Center

See the following -

1 in 8 Chance of Catastrophic Solar Megastorm by 2020

Adam Mann | Wired | February 29, 2012

The Earth has a roughly 12 percent chance of experiencing an enormous megaflare erupting from the sun in the next decade. This event could potentially cause trillions of dollars’ worth of damage and take up to a decade to recover from. Read More »