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M8.1 solar flare on 1989-12-29
ClassM8.1NOAA report
Peak11:051989-12-29 UTC
Duration45 min
Peak flux8.1e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 78 / 2608 |
| Other M/X flares that day | 4 |
| M/X flares that month | 39 |
| Solar cycle | Cycle 22 |
Compared with the strongest flares of 1989
X20.0
X15.0
X13.0
X9.8
X6.5
X5.7
X4.5
X4.1
X4.0
X4.0
X3.9
X3.6
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 16:10 | 16:11 | 39 | M2.8 | S19E18 | 5858 | |
| 18:28 | 18:29 | 7 | M9.7 | S19E21 | 5858 | |
| 20:04 | 20:30 | 62 | M2.8 | S27W33 | 5852 | |
| 23:04 | 23:04 | 7 | M2.2 | S27W34 | 5852 |
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.
← M9.7 1989-12-28M9.7 1989-12-29 →
About this page
A M8.1 flare that began 1989-12-29 10:59 UTC; No. 78 of 2,608 C-class-or-larger flares in 1989.