Solar Flares in September, 2011
30 flares ↑ MAX: X2.1 ↓ MIN: B3
30 flares ↑ MAX: X2.1 ↓ MIN: B3
In September 2011, 30 solar flares were recorded; the strongest was X2.1 on September 6, 2011. The longest run of consecutive active days was 7 (4 Sep–10 Sep).
Most powerful Solar Flares in September 2011
| Date | Class | Level | Duration |
|---|---|---|---|
| September 6, 2011 | X2.1 | High level | 21 min |
| September 24, 2011 | X1.9 | High level | 21 min |
| September 7, 2011 | X1.8 | High level | 22 min |
| September 22, 2011 | X1.5 | High level | 3 h 43 min |
| September 25, 2011 | M7.5 | Moderate level | 31 min |
| September 24, 2011 | M7.1 | Moderate level | 3 h 12 min |
| September 8, 2011 | M6.7 | Moderate level | 16 min |
| September 24, 2011 | M5.8 | Moderate level | 56 min |
| September 6, 2011 | M5.4 | Moderate level | 36 min |
| September 25, 2011 | M4.5 | Moderate level | 17 min |
| September 26, 2011 | M4.1 | Moderate level | 2 min |
| September 25, 2011 | M3.8 | Moderate level | 51 min |
| September 4, 2011 | M3.3 | Moderate level | 6 min |
| September 24, 2011 | M3.2 | Moderate level | 3 h 6 min |
| September 25, 2011 | M3.2 | Moderate level | 1 h 6 min |
| September 26, 2011 | M2.6 | Moderate level | 21 min |
| September 25, 2011 | M2.2 | Moderate level | 36 min |
| September 23, 2011 | M2 | Moderate level | 6 min |
| September 21, 2011 | M1.9 | Moderate level | 36 min |
| September 23, 2011 | M1.7 | Moderate level | 26 min |
| September 5, 2011 | M1.6 | Moderate level | 26 min |
| September 23, 2011 | M1.6 | Moderate level | 11 min |
| September 25, 2011 | M1.3 | Moderate level | 16 min |
| September 5, 2011 | M1.2 | Moderate level | 2 min |
| September 9, 2011 | M1.2 | Moderate level | — |
| September 22, 2011 | M1.2 | Moderate level | 1 min |
| September 28, 2011 | M1.2 | Moderate level | — |
| September 10, 2011 | M1.1 | Moderate level | — |
| September 24, 2011 | M1 | Moderate level | — |
| September 30, 2011 | M1 | Moderate level | — |