Sunspot region AR8555

Number of
sunspots
Size Class Magn. Class Spot Location
1999/05/27 1 50 HSX N16E75
1999/05/28 1 60 HAX N15E61
1999/05/29 1 50 HSX N17E49
1999/05/30 1 50 HSX N17E35
1999/05/31 1 50 HSX N16E22
1999/06/01 3 40 CSO N17E08
1999/06/02 3 40 CSO N17W06
1999/06/03 4 40 CAO N16W18
1999/06/04 1 30 HSX N16W30
1999/06/05 1 20 HSX N15W44
1999/06/06 1 10 AXX N16W57

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Space weather facts

Last X-flare2026/03/30X1.5
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
April 2026130 +51.8
Last 30 days91.6 +20.3

This day in history*

Solar flares
12001X28.5
22001X2.01
32001X1.59
42014M9.35
52017M8.22
DstG
11960-272G3
21973-173G3
32001-101G1
41976-101G1
51994-96G3
*since 1994

Aurora on this day in history

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