SEL EVENT # 1840 in NOAA AR 1376
Date: 2011, Dec 21
Start Time 1903 UT; Max Time 1906 UT; End Time 1909 UT
Coordinates: N19W52
Flare type: X-ray flare and Optical flare observed in H-alpha
Additional:
GOES X-ray Class: C1.7 ( Integrated flux from start to end: 3.6E-04 )
Optical: SF

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