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Sunspot region AR12415

Number of
sunspots		 Size Class Magn. Class Spot Location
2015/09/12 7 100 DAO S21E68
2015/09/13 7 130 DAI S21E53
2015/09/14 7 130 DAI S21E53
2015/09/15 16 150 CAI S22E28
2015/09/16 16 150 CAI S22E14
2015/09/17 20 190 DAC S20W02
2015/09/18 30 230 EAC S20W16
2015/09/19 19 190 EAC S19W29
2015/09/20 19 240 EAC S19W41
2015/09/21 12 240 EAC S19W56
2015/09/22 4 160 EAO S18W69
2015/09/23 3 160 DSO S18W81
2015/09/24 3 160 DSO S18W81
2015/09/25 1 10 BXO S19W0*
BCM
16394

The top 10 solar flares from sunspot region 12415

Start Maximum End
1M3.132015/09/2017:3218:0318:29
2M1.632015/09/1709:3409:4009:45
3M1.372015/09/1702:5203:0303:09
4M1.132015/09/1619:0819:2019:24
5C9.512015/09/1721:0721:1521:19
6C7.122015/09/1703:1103:1403:17
7C5.562015/09/1722:5623:0023:05
8C4.762015/09/1719:4719:5419:57
9C4.652015/09/1718:0818:1818:27
10C4.312015/09/1602:0502:2402:36
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AR4420 29Incoming & Unnumbered Active Regions 281New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 77Coronal Holes 42/44 98Current Farside Activity 460
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Last X-flare2026/03/30X1.5
Last M-flare2026/04/09M1.0
Last geomagnetic storm2026/04/20Kp5 (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 202678.7 -7.2
Last 30 days91.4 +21.7

This day in history*

Solar flares
12001M4.66
22022M3.4
32024M2.81
42011M2.64
52004M1.78
DstG
11970-137G3
21988-109G1
32001-102G2
41979-99G2
51997-93G1
*since 1994

Aurora on this day in history

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