Event detected on 2022 March 17 (S₁), so-called E₉. The HRIEUV (left panel) and the SPICE images are centred around E₉. The HRIEUV image is taken at the acquisition time of the left-hand SPICE slit. The position of the slit is displayed as a dashed line on the HRIEUV and the SPICE images. The two white lines in HRIEUV delimit the field of view of the SPICE slit. The red rectangle is the event region, defined in Sect. 3.1.1. The temperature (log T) of the maximum emissivity of each SPICE line is indicated within parentheses above each image. The latitude on the y-axis of the SPICE images refers to the position of the slit marked with a white dashed line. A movie is available online.