Viewing archive of Wednesday, 20 September 2023 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxCM
159 161B9.42M8.2391

Sunspot regions

Region 13425

Number of
sunspots
Size Class Magn. Class Spot Location
1 60 HSX N24W0*
HMIIF
HMIBC

Region 13429

Number of
sunspots
Size Class Magn. Class Spot Location
3 100 20 CAO N12W81
HMIIF
HMIBC

Solar flares on this day

C2.3

Region 13433

Number of
sunspots
Size Class Magn. Class Spot Location
1 90 HSX N28W41
HMIIF
HMIBC

Region 13435

Number of
sunspots
Size Class Magn. Class Spot Location
4 300 20 DKI N08E29
HMIIF
HMIBC

Solar flares on this day

M8.2

Region 13436

Number of
sunspots
Size Class Magn. Class Spot Location
6 -6 220 60 DAI N21W64
HMIIF
HMIBC

Region 13437

Number of
sunspots
Size Class Magn. Class Spot Location
11 5 190 90 DAI S18W43
HMIIF
HMIBC

Solar flares on this day

C3.1 C3.1

Region 13438

Number of
sunspots
Size Class Magn. Class Spot Location
11 3 70 10 CAI N10E20
HMIIF
HMIBC

Solar flares on this day

C3.3 C5.5 C2.3

Region 13439

Number of
sunspots
Size Class Magn. Class Spot Location
2 -1 30 -20 CAO S25E32
HMIIF
HMIBC

Region 13440

Number of
sunspots
Size Class Magn. Class Spot Location
1 -1 60 -10 HSX N17E46
HMIIF
HMIBC

Region 13441

Number of
sunspots
Size Class Magn. Class Spot Location
4 1 20 CRO N09W03
HMIIF
HMIBC

Region 13442

Number of
sunspots
Size Class Magn. Class Spot Location
5 50 CSI S11E52
HMIIF
HMIBC

Solar flares on this day

C4.2 C4.7

All times in UTC

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Space weather facts

Last X-flare2024/10/31X2.0
Last M-flare2024/11/05M2.6
Last geomagnetic storm2024/10/12Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
September 2024141.4 -74.1
November 2024215.8 +74.4
Last 30 days161.1 +7.2

This day in history*

Solar flares
12013X4.93
21998X1.21
32014X1.14
42003M7.6
52004M5.72
DstG
12023-172G3
21991-92G2
31986-74G1
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*since 1994

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