Truly this is not your usual weather forecast. Big storms are brewing. Your umbrella may not help, but you might want to keep a flashlight handy.


These storms are coming from the sun. It is sending down a huge amount of radiation.  The professionals said we're safe, but it could affect power grids, radios and satellites.
Experts say the joint energy from the two recent solar events will arrive at Earth on coming Saturday, prompting the space weather prediction center to issue a great geomagnetic storm watch.

"People on the ground really don't have to worry," said Lika Guhathakurta, a program scientist with NASA's Solar Dynamics Observatory. She said solar storms don't affect humans on the ground, although astronauts could be at risk she added.