Solar Flare WatchHome › Flare history › 2001
X1.1 solar flare on 2001-04-02
ClassX1.1NOAA report
Peak11:362001-04-02 UTC
Duration67 min
Peak flux1.1e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 378 / 491 |
| Rank in year | 19 / 2429 |
| Other M/X flares that day | 6 |
| M/X flares that month | 46 |
| Solar cycle | Cycle 23 |
Compared with the strongest flares of 2001
X20.0
X14.4
X6.2
X5.6
X5.3
X3.4
X2.8
X2.6
X2.3
X2.0
X1.7
X1.6
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 00:14 | 00:28 | 26 | M3.2 | N17W57 | 9393 | |
| 05:25 | 05:28 | 7 | M1.0 | N13W63 | 9393 | |
| 09:45 | 09:52 | 14 | M1.9 | N15W64 | 9393 | |
| 10:04 | 10:14 | 16 | X1.4 | N17W60 | 9393 | |
| 18:08 | 18:50 | 72 | M2.1 | N19W72 | 9393 | |
| 21:32 | 21:51 | 31 | X20.0 | – | 9393 |
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.
← X1.4 2001-04-02X20.0 2001-04-02 →
About this page
A X1.1 flare that began 2001-04-02 10:58 UTC; No. 19 of 2,429 C-class-or-larger flares in 2001.