Viewing archive of Thursday, 21 October 1999 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
154 -390 -2C1.14C8.8412

Sunspot regions

Region 8728

Number of
sunspots
Size Class Magn. Class Spot Location
3 110 -20 CAO N24W83

Region 8731

Number of
sunspots
Size Class Magn. Class Spot Location
45 -18 440 -200 EKI N14W55

Region 8732

Number of
sunspots
Size Class Magn. Class Spot Location
23 -6 170 -20 FAI N22W64

Solar flares on this day

C6.04 C3.43 C3.29

Region 8734

Number of
sunspots
Size Class Magn. Class Spot Location
5 10 BXO N20W46

Region 8735

Number of
sunspots
Size Class Magn. Class Spot Location
3 -1 10 -10 BXO N18W19

Region 8736

Number of
sunspots
Size Class Magn. Class Spot Location
2 10 10 AXX S25W06

Region 8737

Number of
sunspots
Size Class Magn. Class Spot Location
17 9 70 20 DAO S16E01

Solar flares on this day

C2.84

Region 8738

Number of
sunspots
Size Class Magn. Class Spot Location
2 10 AXX N16E28

Region 8739

Number of
sunspots
Size Class Magn. Class Spot Location
3 50 CAO S14E71

Solar flares on this day

C3.09 C3.37

All times in UTC

<< 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%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/11/06X2.39
Last M-flare2024/11/11M1.3
Last geomagnetic storm2024/11/10Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
October 2024166.4 +25
November 2024175.7 +9.3
Last 30 days164.2 +19.1

This day in history*

Solar flares
12002M4.27
22012M2.91
31999M2.46
42001M2.39
51999M1.61
DstG
11981-124G3
21960-95G4
31978-93G2
42004-92G1
51983-82G2
*since 1994

Social networks