The quake occurred on June 28 at 14:52 JST and the spike began around 17:00 JST.
The charts measure radiation dose in micrograys per hour, equivalent to microsieverts per hour (Source)
Published: June 28th, 2012 at 3:16 pm ET
- Gundersen: M7.0 quake can cause Spent Fuel Pool No. 4 to collapse — New study warns fault nearby Daiichi plant ripped open on 3/11; 70% chance of big quake this year February 14, 2012
- Intense Magnitude 5 quake nearby Fukushima plant — Hits hours after even stronger quake in Northern Japan (MAP) August 25, 2012
- Cesium fallout in Fukushima spikes again — Highest levels since day after New Year’s quake January 17, 2012
- M4.3 quake hits near Fukushima within past hour — Strongest intensity felt at monitoring post 14km from plant January 24, 2012
- Off the Chart: University researchers film while measuring radiation levels in evacuation zone — “‘Over’ means it’s beyond the capacity of the measuring device” (VIDEO) August 8, 2012