Coronal holes Help

On this page you will find all the information you need to spot any coronal holes on the earth-facing solar disk. Coronal holes are the source of fast solar wind streams which sometimes have the potential to produce minor to moderate geomagnetic storms. If our automated detection system recently detected an earth-facing coronal hole it will also be mentioned on this page.

SDO/AIA 193

SDO/AIA 193 Ångström wavelength

SDO/AIA 211

SDO/AIA 211 Ångström wavelength

Coronal hole detection map

Coronal hole detection map

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!

12%

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2020/02/19Kp5 (G1)
Number of spotless days in 2020:72
Current stretch spotless days:22

This day in history*

Solar flares
12000M4.1
22001M2.1
32000M2.0
42000M1.8
52014M1.4
ApG
12001192G4
2200343G2
3201727G1
4200023G1
5200220
*since 1994

Social networks