Solar Flare WatchHome › Flare history › 1997
X2.1 solar flare on 1997-11-04
ClassX2.1NOAA report
Peak05:581997-11-04 UTC
Duration10 min
Peak flux2.1e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 189 / 491 |
| Rank in year | 3 / 310 |
| Other M/X flares that day | 2 |
| M/X flares that month | 14 |
| Solar cycle | Cycle 23 |
| Position on disk | S14W33 |
| Active region | AR 8100 (30 flares) |
Compared with the strongest flares of 1997
X9.4
X2.6
X2.1
M6.8
M6.4
M5.9
M4.2
M4.1
M3.0
M2.0
M1.9
M1.7
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.
← M5.9 1997-09-24X9.4 1997-11-06 →
About this page
A X2.1 flare that began 1997-11-04 05:52 UTC; No. 3 of 310 C-class-or-larger flares in 1997.