According to Spaceweather.com a solar radio burst took place yesterday (02.03.2013) at 19:54 UTC. This solar radio burst was strong enough to drown out normal short wave radio transmissions on Earth. More solar radio burst can be expected in next few days. Since the sunspot that is creating this is making C-flares at this moment.
More details on this radio burst can be found on Spaceweather.com.