Sunspot region AR8378

Number of
sunspots
Size Class Magn. Class Spot Location
1998/11/04 1 90 HSX N17E76
1998/11/05 2 120 HAX N14E63
1998/11/06 1 70 HSX N14E50
1998/11/07 1 130 HSX N13E36
1998/11/08 2 130 HSX N14E23
1998/11/09 5 140 HSX N17E11
1998/11/10 1 170 HHX N14W03
1998/11/11 1 130 HSX N14W16
1998/11/12 3 130 HSX N14W29
1998/11/13 1 120 HSX N14W42
1998/11/14 1 120 HSX N15W56
1998/11/15 1 120 HSX N15W69
1998/11/16 1 50 HSX N15W80
C
1

The top 1 solar flares from sunspot region 8378

Start Maximum End
1C1.21998/11/0422:4122:5222:55

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Last X-flare2026/02/04X4.21
Last M-flare2026/03/28M1.3
Last geomagnetic storm2026/03/25Kp5+ (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
February 202678.2 -34.3
March 202684 +5.8
Last 30 days84 +7.5

This day in history*

Solar flares
12001X2.45
22014X1.45
32023X1.2
42024M3.2
52001M3.13
DstG
11959-154G3
21979-129G3
31989-125G3
41957-121G4
51984-86G2
*since 1994

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