Solar Flare WatchHome › Flare history › 1989
X1.1 solar flare on 1989-09-04
ClassX1.1NOAA report
Peak09:031989-09-04 UTC
Duration49 min
Peak flux1.1e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 367 / 491 |
| Rank in year | 50 / 2608 |
| Other M/X flares that day | 4 |
| M/X flares that month | 71 |
| Solar cycle | Cycle 22 |
| Position on disk | S18E19 |
| Active region | AR 5669 (82 flares) |
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 |
|---|---|---|---|---|---|---|
| 06:25 | 06:31 | 49 | M1.3 | S18E10 | 5669 | |
| 09:46 | 09:52 | 49 | M1.1 | – | – | |
| 12:02 | 12:15 | 63 | M1.4 | S23E18 | 5669 | |
| 13:05 | 13:06 | 49 | M2.0 | N23E41 | 5672 |
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.
← X1.2 1989-09-03M5.7 1989-09-05 →
About this page
A X1.1 flare that began 1989-09-04 08:57 UTC; No. 50 of 2,608 C-class-or-larger flares in 1989.