Viewing archive of Tuesday, 12 September 2017

Select the desired archive item

Coronal mass ejection arrival

The X8.2 coronal mass ejection has arrived. A weak impact was observed at 19:29 UTC with a minor increase in the solar speed, density and the total strength of the interplanetary field (Bt). This is without a doubt the glancing blow arrival of the X8.2 coronal mass ejection as the low energy protons measured by ACE/EPAM peaked at the moment of impact, a classic sign of a CME arrival.

Read more

Current data suggest that it is not possible to see aurora now at middle latitudes

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

59%

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/05/06Kp6 (G2)
Number of spotless days in 2018:78
Current stretch spotless days:2

This day in history*

Solar flares
12001C5.2
22014C3.8
32000C3.6
42000C3.6
52000C3.38
ApG
1201337G1
2200028G1
3199419G1
4200316
5199915
*since 1994

Social networks