Viewing archive of Monday, 21 December 1998 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
72 -260 -3B9C8.016

Sunspot regions

Region 8409

Number of
sunspots
Size Class Magn. Class Spot Location
3 -7 100 -110 CSO S28W87

Region 8410

Number of
sunspots
Size Class Magn. Class Spot Location
2 -3 10 -20 AXX N24W42

Region 8414

Number of
sunspots
Size Class Magn. Class Spot Location
1 -2 0 AXX N26E02

Region 8415

Number of
sunspots
Size Class Magn. Class Spot Location
16 -2 170 -100 EAI N20E36

Solar flares on this day

C2.07

Region 8416

Number of
sunspots
Size Class Magn. Class Spot Location
2 60 DSO N19E68

Solar flares on this day

C2.96

Region 8417

Number of
sunspots
Size Class Magn. Class Spot Location
2 0 BXO N22W64

Region 8418

Number of
sunspots
Size Class Magn. Class Spot Location
2 0 BXO S23E43

All times in UTC

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G1 - Minor geomagnetic storm

Observed Kp: 5
Threshold reached: 20:02 UTC

Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future

Oulu, Rovaniemi, Sodankylä, Utsjoki
Kirkenes
Murmansk
Kiruna, Luleå

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Kuopio
Trondheim
Arkhangelsk, Vorkuta
Sundsvall, Umeå

Current data suggests there is a slight possibility for aurora to appear at the following middle latitude regions in the near future

Tampere
Petrozavodsk
The Disturbance Storm Time index predicts moderate storm conditions right now (-71nT)

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20:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 20:02 UTC

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Last X-flare2025/03/28X1.1
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This day in history*

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