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Sunspot region AR11728

Number of
sunspots		 Size Class Magn. Class Spot Location
2013/04/23 2 40 CSO N19E62
2013/04/24 1 60 HSX N19E48
2013/04/25 1 50 HSX N19E37
2013/04/26 2 60 HSX N19E24
2013/04/27 3 20 HRX N19E11
2013/04/28 1 20 HRX N19W02
2013/04/29 1 20 HRX N19W16
2013/04/30 1 20 HRX N19W30
2013/05/01 1 10 AXX N19W44
2013/05/02 1 10 AXX N19W58
2013/05/03 1 10 AXX N19W72
2013/05/04 2 10 BXO N20W85
2013/05/05 2 10 BXO N20W99
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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/04/09M1.0
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026118.8 +32.8
Last 30 days103.2 +49.3

This day in history*

Solar flares
12001X3.14
22002X1.17
32023M2.83
42002M2.34
52000M1.23
DstG
11990-281G4
21982-137G3
31957-124G3
41959-122G4
51960-81G3
*since 1994

Aurora on this day in history

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