Reference image from SpaceWeatherLive
Halpha_2023-05-22_1402 UT
Halpha_2023-05-22_1413 UT
Here can be seen a C class flare that apparently finished at 1414 UT. What follows is an animation of that flare starting at 1414 UT and lasting about 10 minutes.
The next image is of the same region, but much later, where it can be seen that the flare is no longer active.
Halpha_2023-05-22_1548 UT
Halpha_2023-05-22_1550 UT
Halpha_2023-05-22_1551 UT
Halpha_2023-05-22_1553 UT