Viewing archive of Tuesday, 18 December 2001

Sunspot numberNew regionsBackground fluxMaximum fluxC
210 -51 1C1.0C4.864

Solar flares

RegionStartMaximumEnd
9733C3.0 04:3904:4404:49
-C1.6 07:3207:3607:42
9733C4.8 07:4907:5408:07
9742C3.7 19:5920:0320:07

<< Go to daily overview page

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%

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:2019/09/02Kp5 (G1)
Number of spotless days in 2019:192
Current stretch spotless days:22

This day in history*

Solar flares
12001X2.6
22011X1.9
32011M7.1
41997M5.9
52011M5.8
ApG
1200341G2
2199828G2
3200624G1
4201421
5201015
*since 1994

Social networks