SEL EVENT # 3390 in NOAA AR 2671
Date: 2017, Aug 21
Start Time 2012 UT; Max Time 2022 UT; End Time 2026 UT
Coordinates: N09W23
Flare type: X-ray flare and Optical flare observed in H-alpha
Additional:
GOES X-ray Class: C1.5 ( Integrated flux from start to end: 6.2E-04 )
Optical: SF

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