Sunspot regions

Viewing archive of Wednesday, 21 April 2021 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.

Sunspot number	New regions	Background flux	Maximum flux	C
47 -7	0 -1	B1.24	C1.6	1

Region 12816
Number of sunspots	Size	Class Magn.	Class Spot	Location
9 -1	100 -10		CAO	S24W05

Solar flares on this day
B1.5 B1.5 B2.1 B6.2

Region 12817
Number of sunspots	Size	Class Magn.	Class Spot	Location
7 -6	180 40		DAO	N18W76

Solar flares on this day
C1.6 B4.6 B3.7 B2.9 B1.7 B2.5 B2.9 B1.2 B1.8 B2.1 B1.8 B2.1 B4.4 B5.1 B6.2 B3.1 B3.4 B3.5 B4.4 B2.6

Region 12818
Number of sunspots	Size	Class Magn.	Class Spot	Location
1	40 -50		HSX	S17E52

All times in UTC

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G1 - Minor geomagnetic storm

Observed Kp: 5
Threshold reached: 21:40 UTC

The strength of the interplanetary magnetic field is moderate (13.28nT), the direction is North (6.26nT).

The Disturbance Storm Time index predicts strong storm conditions right now (-110nT)

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2025/04/12-13 Filament CMEs 2025/04/16 G3 Watch 453 Incoming & Unnumbered Active Regions 1741 AR4062 33 AR4064 8 AR 4060 31

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