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Sunspot region AR11872

Number of
sunspots		 Size Class Magn. Class Spot Location
2013/10/16 1 60 HSX S15E67
2013/10/17 1 90 HSX S17E55
2013/10/18 1 70 CSO S17E41
2013/10/19 1 80 HSX S16E28
2013/10/20 1 80 HSX S17E15
2013/10/21 1 80 HSX S17E01
2013/10/22 2 60 HSX S17W11
2013/10/23 4 60 CAO S17W26
2013/10/24 4 50 DSO S18W40
2013/10/25 2 70 DSO S18W54
2013/10/26 4 50 CSO S18W67
2013/10/27 2 10 BXO S18W80
2013/10/28 2 10 BXO S18W80
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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/03/28M1.3
Last geomagnetic storm2026/03/25Kp5+ (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
February 202678.2 -34.3
April 2026130 +51.8
Last 30 days91.6 +20.3

This day in history*

Solar flares
12001X28.5
22001X2.01
32001X1.59
42014M9.35
52017M8.22
DstG
11960-272G3
21973-173G3
32001-101G1
41976-101G1
51994-96G3
*since 1994

Aurora on this day in history

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