Viewing archive of Thursday, 17 October 2013

Sunspot numberNew regionsBackground fluxMaximum fluxCM
166 463 2B8.6M1.2851

Solar flares

RegionStartMaximumEnd
-C4.7 03:2003:2803:35
1861C1.2 06:0706:1206:17
1861C5.8 10:2510:3210:37
1861C4.8 11:4712:0412:15
1861M1.2 15:0915:4115:58
-C1.6 22:1822:2422:32

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2019:243
Current stretch spotless days:17

This day in history*

Solar flares
12013X1.0
22003M1.7
32000C9.1
42003C9.1
52003C8.8
ApG
1199422G1
2200120
3200214
4200312
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*since 1994

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