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X3.9 solar flare on 1998-08-19
ClassX3.9NOAA report
Peak21:451998-08-19 UTC
Duration15 min
Peak flux3.9e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 76 / 491 |
| Rank in year | 2 / 1296 |
| Other M/X flares that day | 2 |
| M/X flares that month | 19 |
| Solar cycle | Cycle 23 |
| Position on disk | N32E75 |
Compared with the strongest flares of 1998
X4.9
X3.9
X3.7
X3.3
X2.8
X2.7
X2.5
X2.2
X1.2
X1.2
X1.1
X1.0
Other M/X flares that day
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.
← X4.9 1998-08-18M9.0 1998-08-21 →
About this page
A X3.9 flare that began 1998-08-19 21:35 UTC; No. 2 of 1,296 C-class-or-larger flares in 1998.