Viewing archive of Wednesday, 13 January 1999 - Sunspot regions

It appears that the image of the visible solar disk for this day in history is missing.
Sunspot number New regionsBackground fluxMaximum fluxCM
77 111 -1B3.14M1101

Sunspot regions

Region 8431

Number of
sunspots
Size Class Magn. Class Spot Location
1 -1 20 10 HAX S27W32

Region 8434

Number of
sunspots
Size Class Magn. Class Spot Location
4 10 BXO S27W17

Region 8437

Number of
sunspots
Size Class Magn. Class Spot Location
1 80 -10 HSX N11E42

Region 8438

Number of
sunspots
Size Class Magn. Class Spot Location
5 20 CSO S18E07

Region 8439

Number of
sunspots
Size Class Magn. Class Spot Location
5 160 CAO S24E75

Solar flares on this day

C1.74 C4.27

All times in UTC

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Last X-flare2025/12/08X1.1
Last M-flare2026/01/11M3.3
Last geomagnetic storm2026/01/11Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
December 2025124 +32.2
January 202693.1 -30.9
Last 30 days97.4 -9.1

This day in history*

Solar flares
12002M6.38
22023M4.6
31999M4.39
42023M3.5
52015M3.19
DstG
11967-160G4
21988-147G3
31999-101G1
41960-100G2
52022-91G2
*since 1994

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