Solar Flare WatchSolar flares in 1978
C946
M175
X20
LargestX1.51978-07-11
M/X flares by month
- January 1978
- February 1978
- March 1978
- April 1978
- May 1978
- June 1978
- July 1978
- August 1978
- September 1978
- October 1978
- November 1978
- December 1978
Nearby years (M + X)
2
15
41
195
309
406
520
596
112
Top 20 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1978-07-11 | 10:54 | 10:58 | 56 | X1.5 | N20E46 | 1203 |
| 1978-04-28 | 13:08 | 13:29 | 605 | X0.5 | N22E41 | 1092 |
| 1978-04-29 | 18:37 | 19:25 | 293 | X0.3 | N16E16 | 1092 |
| 1978-07-09 | 00:01 | 00:33 | 98 | X0.3 | N19E68 | 1203 |
| 1978-07-10 | 06:20 | 06:24 | 47 | X0.3 | N18E58 | 1203 |
| 1978-04-11 | 13:40 | 14:26 | 224 | X0.2 | N19W54 | 1057 |
| 1978-04-30 | 14:37 | 15:08 | 191 | X0.2 | N24E11 | 1092 |
| 1978-05-07 | 03:33 | – | 47 | X0.2 | N22W68 | 1095 |
| 1978-07-11 | 22:15 | 22:31 | 66 | X0.2 | N18E38 | 1203 |
| 1978-12-12 | 15:03 | 15:14 | 93 | X0.2 | S19W73 | 1447 |
| 1978-12-12 | 20:12 | 20:12 | 11 | X0.2 | S15E01 | 1444 |
| 1978-01-08 | 07:10 | 07:13 | 39 | X0.1 | S12W85 | 967 |
| 1978-04-08 | 01:15 | 02:01 | 46 | X0.1 | N19W02 | 1057 |
| 1978-05-28 | 14:57 | 15:02 | 10 | X0.1 | N17W10 | 1129 |
| 1978-09-23 | 09:47 | 10:29 | 43 | X0.1 | N35W50 | 1294 |
| 1978-12-11 | 18:33 | 19:42 | 105 | X0.1 | S17E14 | 1444 |
| 1978-12-12 | 18:36 | 18:36 | 24 | X0.1 | S17W64 | 1447 |
| 1978-12-13 | 23:53 | 23:58 | 27 | X0.1 | S17W79 | 1447 |
| 1978-12-14 | 07:22 | 07:24 | 13 | X0.1 | S15W80 | 1447 |
| 1978-12-27 | 16:27 | 16:37 | 93 | X0.1 | S13E39 | 1476 |
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.
About this page
1,141 flares of class C+ in 1978: 175 M-class and 20 X-class.