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Solar flares in October 1989
C-class142
M-class34
X-class5
LargestX13.01989-10-19
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| October 1988 | 179 | 18 | 3 | X3.2 |
| October 1989 | 142 | 34 | 5 | X13.0 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1989-10-19 | 12:29 | 12:55 | 464 | X13.0 | S27E10 | 5747 |
| 1989-10-24 | 17:36 | 18:31 | 528 | X5.7 | S30W57 | 5747 |
| 1989-10-22 | 17:08 | 17:57 | 240 | X2.9 | S27W31 | 5747 |
| 1989-10-23 | 12:35 | 12:43 | 72 | X1.5 | S27W42 | 5747 |
| 1989-10-27 | 19:01 | 19:01 | 12 | X1.0 | S32W90 | 5747 |
| 1989-10-25 | 16:37 | 16:41 | 89 | M8.7 | S28W65 | 5747 |
| 1989-10-26 | 20:46 | 20:49 | 13 | M8.1 | S30W79 | 5747 |
| 1989-10-18 | 18:06 | 18:25 | 164 | M7.4 | S25E15 | 5747 |
| 1989-10-27 | 11:35 | – | 18 | M6.2 | S28W90 | 5747 |
| 1989-10-13 | 05:00 | 06:12 | 210 | M4.1 | – | 5744 |
| 1989-10-26 | 23:19 | 23:41 | 94 | M4.1 | – | 5748 |
| 1989-10-29 | 02:21 | 04:51 | 236 | M4.0 | – | – |
| 1989-10-21 | 23:54 | 23:56 | 6 | M3.1 | S28W22 | 5747 |
| 1989-10-18 | 00:15 | – | 135 | M2.7 | S30E30 | 5747 |
| 1989-10-21 | 01:53 | 01:55 | 13 | M2.4 | S28W09 | 5747 |
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.
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About this page
181 flares of class C or larger in October 1989; by M/X count it ranks 71 of 565 months.