Viewing archive of Thursday, 18 February 2021

Select the desired archive item

Coronal hole faces Earth

It's that time of the solar cycle again where coronal holes become more apparent at lower latitudes! Less than a week ago we already had a similar coronal hole facing our planet. The solar wind stream from that coronal hole caused active geomagnetic conditions on Tuesday. Right now we have yet another northward extension of the southern hemisphere polar coronal hole facing our planet today.

Read more

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!

100%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/09/14X4.54
Last M-flare2024/09/14M3.0
Last geomagnetic storm2024/09/17Kp8- (G4)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
August 2024215.5 +19
September 2024149.4 -66.1
Last 30 days156.7 -55.8

This day in history*

Solar flares
12023M8.2
22015M3.13
31998M2.71
42002M2.66
52002M2.21
DstG
11989-93
21977-85G2
32015-81G3
41959-77G2
51967-65G2
*since 1994

Social networks