Solar Flare WatchHome › Flare history › 1986
X3.0 solar flare on 1986-02-04
ClassX3.0NOAA report
Peak07:401986-02-04 UTC
Duration62 min
Peak flux3.0e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 112 / 491 |
| Rank in year | 1 / 166 |
| Other M/X flares that day | 1 |
| M/X flares that month | 12 |
| Solar cycle | Cycle 21 |
| Position on disk | S03E21 |
| Active region | AR 4711 (19 flares) |
Compared with the strongest flares of 1986
X3.0
X1.7
M6.6
M6.4
M6.4
M5.2
M4.7
M3.0
M2.4
M2.3
M2.2
M1.6
Other M/X flares that day
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.
← M6.6 1986-01-16M6.4 1986-02-04 →
About this page
A X3.0 flare that began 1986-02-04 07:35 UTC; No. 1 of 166 C-class-or-larger flares in 1986.