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M8.7 solar flare on 2014-12-17
ClassM8.7NOAA report
Peak04:512014-12-17 UTC
Duration55 min
Peak flux8.7e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 20 / 2016 |
| Other M/X flares that day | 3 |
| M/X flares that month | 18 |
| Solar cycle | Cycle 24 |
| Position on disk | S11E33 |
| Active region | AR 12241 (16 flares) |
Compared with the strongest flares of 2014
X4.9
X3.1
X2.2
X2.0
X2.0
X1.8
X1.6
X1.6
X1.6
X1.5
X1.3
X1.2
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 00:57 | 01:10 | 23 | M1.5 | S11E36 | 12241 | |
| 01:41 | 01:50 | 16 | M1.1 | S11E33 | 12241 | |
| 18:54 | 19:01 | 26 | M1.4 | S10E24 | 12241 |
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.
← M6.1 2014-12-04M6.9 2014-12-18 →
About this page
A M8.7 flare that began 2014-12-17 04:25 UTC; No. 20 of 2,016 C-class-or-larger flares in 2014.