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Sunspot region AR12170

Number of
sunspots		 Size Class Magn. Class Spot Location
2014/09/18 2 60 HSX N07E64
2014/09/19 1 40 HAX N10E51
2014/09/20 1 30 HAX N09E40
2014/09/21 2 50 HAX N11E27
2014/09/22 1 50 HAX N11E13
2014/09/23 1 40 HAX N11W01
2014/09/24 2 50 HAX N11W13
2014/09/25 2 30 HAX N11W26
2014/09/26 1 10 AXX N11W40
2014/09/27 2 10 AXX N12W52
2014/09/28 2 10 AXX N12W52
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AR4401 67Changelog/Featurelog 179AR4405 30AR4403 23Incoming & Unnumbered Active Regions 256
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Space weather facts

Last X-flare2026/02/04X4.21
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
March 202684 +5.8
Last 30 days84 +6.2

This day in history*

Solar flares
12024X1.12
22025X1.1
32025X1.1
42024M9.7
52024M7.1
DstG
11959-176G3
21957-141G3
31984-105G3
42001-87G2
51976-78
*since 1994

Aurora on this day in history

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