Sunspot region AR8485

Number of
sunspots
Size Class Magn. Class Spot Location
1999/03/09 4 30 BXO N22E66
1999/03/10 11 200 CAO N22E53
1999/03/11 15 250 EAO N22E40
1999/03/12 22 290 EAO N22E27
1999/03/13 25 310 EAI N23E13
1999/03/14 38 420 EKO N23E00
1999/03/15 46 520 FHC N23W12
1999/03/16 58 560 FKI N23W25
1999/03/17 50 610 FKI N23W38
1999/03/18 36 570 FAI N24W52
1999/03/19 20 360 FAO N24W64
1999/03/20 8 200 EAO N22W79
CM
325

The top 10 solar flares from sunspot region 8485

Start Maximum End
1M8.971999/03/1621:3421:4121:46
2M4.791999/03/1808:2508:3108:35
3M4.711999/03/1709:5009:5610:05
4M2.411999/03/1606:1806:3506:56
5M1.711999/03/1714:4214:4914:58
6C7.591999/03/1814:0814:2214:38
7C6.671999/03/1618:2218:2918:39
8C5.911999/03/1609:3209:4209:59
9C5.31999/03/1613:2113:2913:37
10C4.961999/03/1620:0720:2120:27

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Space weather facts

Last X-flare2026/04/24X2.5
Last M-flare2026/05/22M2.3
Last geomagnetic storm2026/05/16Kp6- (G2)
Spotless days
Last 365 days3 days
20263 days (2%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
April 202679.3 -6.6
May 202687.6 +8.3
Last 30 days99.3 +9.1

This day in history*

Solar flares
12024M4.23
22023M3.0
32024M2.57
42024M1.7
52000M1.36
DstG
12002-109G4
21990-68
31992-66G1
41995-65G2
51989-65G3
*since 1994

Aurora on this day in history

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