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Sky-Tonight.com / Sun / SunSpots / Sunspot Region 4246

Sunspot AR 4246

Sunspot AR 4246 is a large, magnetically complex active region currently visible on the Sun’s surface. It contains 30 visible spots and spans an area of 840 millionths of the solar hemisphere. This region has produced 2 C-class flares, 13 M-class flares so far and currently shows a 85% probability of C-class, 40% of M-class, and 10% of X-class flares. It is located at heliographic latitude N24°, Earth-facing longitude -69°, and Carrington longitude 290°.

Sunspot Location on Map

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Selected map type: AIA 171 Å

Sunspot Properties

Region Number4246
First Observed2025-10-06 07:55
Sunspot TypeEkc
Magnetic ClassBGD
Area840 MSH
Number of Spots30
Extent14 heliographic degrees
Latitude24°
Longitude-69°
Carrington Longitude290
Statusf

Flare Activity

Flare Class Begin Time (UTC) Peak Time (UTC) End Time (UTC) Location Duration
M1.12025-10-16 10:002025-10-16 10:162025-10-16 10:36N24W7016 minutes
M1.32025-10-16 04:532025-10-16 05:082025-10-16 05:22N22W6515 minutes
M1.12025-10-15 15:172025-10-15 15:212025-10-15 15:24N25W554 minutes
M2.42025-10-15 14:372025-10-15 14:452025-10-15 14:52N25W558 minutes
M2.72025-10-15 12:552025-10-15 13:282025-10-15 14:05N22W5533 minutes
M1.12025-10-15 05:012025-10-15 05:102025-10-15 05:41N22W539 minutes
M3.72025-10-14 22:052025-10-14 22:182025-10-14 22:26N24W5013 minutes
M4.82025-10-14 18:492025-10-14 19:152025-10-14 19:36N25W4526 minutes
M3.12025-10-14 11:282025-10-14 11:362025-10-14 11:45N25W458 minutes
M2.02025-10-13 15:352025-10-13 15:412025-10-13 15:44N24W306 minutes
M1.22025-10-13 04:042025-10-13 04:182025-10-13 04:39N24W2314 minutes
M2.72025-10-12 23:552025-10-13 00:192025-10-13 00:31N24W2024 minutes
M1.92025-10-12 19:592025-10-12 20:262025-10-12 20:45N24W1927 minutes
C9.32025-10-12 15:172025-10-12 15:362025-10-12 15:51N24W1219 minutes
C9.62025-10-12 04:182025-10-12 04:502025-10-12 05:26N22W1032 minutes

Sunspot Evolution

The following graphs show how this sunspot region 4246 has changed over time. The first graph displays its total area on the solar surface, while the second shows the number of individual sunspots observed within the region.

Sunspot Area

Area 0 925

This graph illustrates the physical growth of the sunspot region, measured in millionths of the solar hemisphere (MSH). Increases in area typically indicate developing magnetic complexity and potential for solar activity.

Spot Count

Sunspots 0 36

This graph shows the number of visible sunspots within the region at each observation time. A higher spot count often corresponds with a more active or complex region.

Detailed History

Date Area (MSH) Spot Count Classification Flares Location
2025-10-1684030EkcM1.1, 10:00-10:36N24W69
2025-10-1530032EkcM1.1, 10:00-10:36N22W56
2025-10-1426027EkcM1.1, 10:00-10:36N22W43
2025-10-1325027EkcM1.1, 10:00-10:36N22W30
2025-10-1218015DaiM1.1, 10:00-10:36N24W16
2025-10-115012Dai-N22W03
2025-10-10103Bxo-N23E09
2025-10-06101Axx-N24E66

Acknowledgements

We gratefully thank the teams behind the Solar Dynamics Observatory (SDO), including the HMI, AIA, and EVE instrument teams, for their continuous work in solar monitoring.

We also thank the National Aeronautics and Space Administration (NASA), the Goddard Space Flight Center (GSFC), and the National Oceanic and Atmospheric Administration (NOAA) for their contributions to solar science and public data access.

Additional event data is provided by NASA’s DONKI (Database of Notifications, Knowledge, Information), which offers alerts and detailed records of solar flares, CMEs, and geomagnetic storms.