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Sky-Tonight.com / Sun / Sunspots / Sunspot Region 4425

Sunspot AR 4425

Sunspot AR 4425 is a large, magnetically complex active region currently visible on the Sun’s surface. It contains 19 visible spots and spans an area of 300 millionths of the solar hemisphere. This region has produced 4 M-class flares so far and currently shows a 85% probability of C-class, 50% of M-class, and 10% of X-class flares. It is located at heliographic latitude N5°, Earth-facing longitude 36°, and Carrington longitude 161°.

Sunspot Location on Map

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Selected map type: AIA 171 Å

Sunspot Properties

Region Number4425
First Observed2026-04-24 10:25
Sunspot TypeEkc
Magnetic ClassBGD
Area300 MSH
Number of Spots19
Extent15 heliographic degrees
Latitude5°
Longitude36°
Carrington Longitude161
Statusf

Flare Activity

Flare Class Begin Time (UTC) Peak Time (UTC) End Time (UTC) Location Duration
M1.02026-04-26 21:392026-04-26 21:452026-04-26 21:50N06E446 minutes
M2.22026-04-26 10:542026-04-26 11:042026-04-26 11:07N06E5210 minutes
M1.32026-04-25 15:082026-04-25 15:232026-04-25 15:35N06E6415 minutes
M1.12026-04-25 05:222026-04-25 05:302026-04-25 05:32N07E708 minutes

Sunspot Evolution

The following graphs show how this sunspot region 4425 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 0 330

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 21

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
2026-04-2730019EkcM1.0, 21:39-21:50N05E36
2026-04-2614014EscM1.0, 21:39-21:50N05E50
2026-04-251306EacM1.0, 21:39-21:50N05E66
2026-04-24755Dso-N06E76

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.