Viewing archive of Friday, 20 September 2013 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
850 -3B4C5.525

Sunspot regions

Region 11841

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 -10 HRX S04W38
HMIIF
HMIBC

Region 11843

Number of
sunspots
Size Class Magn. Class Spot Location
6 1 60 20 DSO N01W21
HMIIF
HMIBC

Region 11845

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 AXX S18E34
HMIIF
HMIBC

Region 11846

Number of
sunspots
Size Class Magn. Class Spot Location
2 1 180 20 CSO S16E49
HMIIF
HMIBC

Region 11848

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 AXX S10E36
HMIIF
HMIBC

Region 11849

Number of
sunspots
Size Class Magn. Class Spot Location
3 10 BXO N22E32
HMIIF
HMIBC

Region 11850

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 AXX N09E75
HMIIF
HMIBC

Solar flares on this day

C1.32 C3.08 C5.48 C3.36 C1.83 B9.26

All times in UTC

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Last X-flare2026/02/04X4.3
Last M-flare2026/02/05M1.1
Last geomagnetic storm2026/02/05Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
January 2026112.6 -11.4
February 2026140.8 +28.2
Last 30 days124.4 +17

This day in history*

Solar flares
12025M7.6
22010M4.21
32024M4.2
42025M2.31
52024M2.2
DstG
11994-126G2
21981-123G3
31983-104G2
41982-101G1
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*since 1994

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