SID and radio bursts Rob Stammes Image taken: Jun. 29, 2012 Location: Laukvik, Lofoten, Norway. Details: Today,jun.29 2012,on my instruments a nice sudden ionospheric disturbance.Together with a strong radio burst on two vhf radio frequency's. Around this M2.2 flare also some other isolated radio bursts. ©2013, SpaceWeather.com -- This site is penned daily by Dr. Tony Phillips.