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Sunspot region AR13998

Number of
sunspots		 Size Class Magn. Class Spot Location
2025/02/16 4 90 CAO S14E67
2025/02/17 16 150 DAI S14E52
2025/02/18 19 170 DAI S14E40
2025/02/19 12 200 DAI S14E26
2025/02/20 18 220 DAI S14E12
2025/02/21 22 220 EAI S14W02
2025/02/22 28 280 EKI S14W16
2025/02/23 28 290 EKC S14W28
2025/02/24 34 430 EKC S14W42
2025/02/25 28 400 EKC S14W56
2025/02/26 22 320 EKC S14W70
2025/02/27 22 320 EKC S14W84
2025/02/28 22 320 EKC S14W98
CM
524

The top 10 solar flares from sunspot region 13998

Start Maximum End
1M3.62025/02/2511:2011:5912:44
2M1.32025/02/2502:4302:4702:54
3M1.02025/02/2309:5409:5610:01
4M1.02025/02/2316:1816:3516:51
5C9.42025/02/2317:1717:2117:31
6C9.32025/02/2723:1223:2423:34
7C8.72025/02/2413:0213:2013:33
8C8.12025/02/2421:3021:4021:50
9C7.52025/02/2309:0109:1409:22
10C7.52025/02/2712:2312:3612:47
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Space weather facts

Last X-flare2026/04/24X2.5
Last M-flare2026/05/10M5.7
Last geomagnetic storm2026/05/05Kp5 (G1)
Spotless days
Last 365 days3 days
20263 days (2%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
April 202679.3 -6.6
May 2026103.1 +23.8
Last 30 days95.2 +0.9

This day in history*

Solar flares
12013X4.11
22013X2.51
32025X1.21
42005X1.15
52024M6.6
DstG
12024-102G2
21992-87G1
32015-82G2
41959-58
51958-58G2
*since 1994

Aurora on this day in history

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