Viewing archive of Thursday, 2 December 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 fluxC
156 374 3C1.43C7.592

Sunspot regions

Region 8778

Number of
sunspots
Size Class Magn. Class Spot Location
7 -6 160 30 CAO S15W78

Region 8780

Number of
sunspots
Size Class Magn. Class Spot Location
1 0 AXX S15W39

Region 8781

Number of
sunspots
Size Class Magn. Class Spot Location
16 -5 250 20 DKI S12W16

Region 8782

Number of
sunspots
Size Class Magn. Class Spot Location
17 -6 220 50 EAI N09W53

Region 8783

Number of
sunspots
Size Class Magn. Class Spot Location
3 -2 30 10 CRO S16W58

Region 8784

Number of
sunspots
Size Class Magn. Class Spot Location
4 30 10 CAO N30E18

Region 8785

Number of
sunspots
Size Class Magn. Class Spot Location
1 60 HSX N14E71

All times in UTC

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Last X-flare2026/03/30X1.5
Last M-flare2026/04/04M1.0
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026121 +35.1
Last 30 days102.1 +47

This day in history*

Solar flares
12001X1.14
22000M4.54
32003M3.68
42002M3.12
52002M1.68
DstG
11984-100G3
21971-97G2
32006-82G2
41959-73G2
51995-68G1
*since 1994

Aurora on this day in history

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