Solar Flare WatchHome › Flare history › 1999
M6.2 solar flare on 1999-03-16
ClassM6.2NOAA report
Peak21:411999-03-16 UTC
Duration12 min
Peak flux6.2e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 10 / 2025 |
| Other M/X flares that day | 2 |
| M/X flares that month | 11 |
| Solar cycle | Cycle 23 |
| Position on disk | N23W39 |
Compared with the strongest flares of 1999
X1.8
X1.4
X1.4
X1.1
M9.8
M8.0
M7.6
M7.4
M6.6
M6.2
M6.0
M6.0
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 06:18 | 06:35 | 38 | M1.6 | N22W31 | – | |
| 21:01 | 21:07 | 13 | M1.1 | N23W36 | – |
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 1999-02-28M5.4 1999-04-04 →
About this page
A M6.2 flare that began 1999-03-16 21:34 UTC; No. 10 of 2,025 C-class-or-larger flares in 1999.