Real-time auroral activity

Select a tab to view the latest solar wind and interplanetary magnetic field data covering the past 24 hours as measured by the Advanced Composition Explorer (ACE) spacecraft located at the Sun-Earth L1 point. These parameters are the first parameters used to predict auroral activity. The redder the plots get, the better it is for auroral activity! With the current speed, it will take the solar wind 60 minutes to propagate from ACE to Earth.

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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 2020:12
Current stretch spotless days:10

This day in history*

Solar flares
12005X7.1
22001M7.7
32004M6.1
41999M5.2
52010M3.4
ApG
1201626G1
2200319G1
3200418
4200517G1
5199815
*since 1994

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