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Sunspot region AR11861

Number of
sunspots		 Size Class Magn. Class Spot Location
2013/10/08 2 10 BXO S13E64
2013/10/09 3 10 BXO S13E50
2013/10/10 8 60 CAO S13E37
2013/10/11 23 200 EAC S10E22
2013/10/12 19 340 DKC S09E08
2013/10/13 14 380 DKC S09W05
2013/10/14 12 400 DHI S09W19
2013/10/15 9 400 DHO S08W32
2013/10/16 17 480 DHO S10W45
2013/10/17 13 350 DHC S10W57
2013/10/18 17 370 EKI S08W69
2013/10/19 16 410 EKI S07W79
2013/10/20 9 240 EAC S07W91
2013/10/21 9 240 EAC S07W0*
BCM
2493

The top 10 solar flares from sunspot region 11861

Start Maximum End
1M1.832013/10/1715:0915:4115:58
2M1.212013/10/1815:1515:2615:39
3M1.062013/10/1422:4923:0323:12
4C9.012013/10/1122:5623:0723:19
5C8.362013/10/1710:2510:3210:37
6C7.942013/10/1103:5904:1004:19
7C7.812013/10/1108:2209:1809:29
8C7.782013/10/1203:3703:4703:59
9C7.52013/10/1201:5402:0002:03
10C7.192013/10/1810:1710:3410:48
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Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Oulu, Rovaniemi, Kuopio, Sodankylä
Trondheim
Arkhangelsk, Murmansk, Vorkuta
Luleå, Sundsvall, Umeå
The solar wind speed is currently moderately high (583.8 km/sec.)

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Latest alerts

02:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 01:50 UTC

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Saturday, 5 April 2025
20:30 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 20:20 UTC

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20:24 UTC - Solar flare

Moderate M1.05 flare

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20:09 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.05)

10:00 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 78GW at 10:32 UTC

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Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/05M1.0
Last geomagnetic storm2025/04/05Kp6- (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025150.4 +16.2
Last 30 days131.6 -13.4

This day in history*

Solar flares
12001X8.08
22004M3.44
32023M3.01
42000M2.7
52006M2.02
DstG
12000-291G4
21977-105G3
31988-100G2
41984-86
52010-81G1
*since 1994

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