Panels a–c: GOES SXI images showing the evolution of the eruption in soft X-rays, with NRH 445 MHz contours for comparison. Panel d: Fermi GBM counts from 4.2–50.5 keV channels. An increase in counts can be seen in the channels between 4.2–40.8 keV at the time of the event. A 445 MHz flux density curve (with arbitrary flux) from Orfées is shown in blue for comparison. Although the radio and X-ray start to rise at similar times, the radio peak is ~3 min after the X-ray peak. The vertical dashed lines are times of the images above. Panel e: the photon energy spectrum fit with a thermal and thin-target model, given that that the flare was beyond the limb (assumption of no observed thick-target source).