SEL EVENT # 3410 in NOAA AR 2671
Date: 2017, Aug 21
Start Time 2147 UT; Max Time 2238 UT; End Time 2258 UT
Coordinates: N10W20
Flare type: X-ray flare and Optical flare observed in H-alpha
Additional: Several eruptive centers
GOES X-ray Class: C1.5 ( Integrated flux from start to end: 4.0E-03 )
Optical: 1F

Below are an MPEG movie for this event, GOES flux plot and data file and several snapshots.