Solar Activity Report: March 23 -29, 2026

Solar activity during the reporting period ranged from low to moderate levels. The week began with low solar activity and a C3.2 flare was the largest event on March 23 that originated from active region 14392 near the southeast limb. The X‑ray flux generally remained at B‑level until a C7.3 flare was produced on March 24 by an active region rotating onto the Earth‑facing side from behind the northeast limb. This region was later designated NOAA 14403. Following this event, the X‑ray flux stayed within the C‑level range, with several C‑class flares and two M‑class flares. The largest event on March 25 was a C3.7 flare. Activity increased to moderate levels on March 26 with an M3.9 flare from active region 14403 and multiple additional C‑class flares.

On March 27, activity declined again to low levels, with only C‑class flares observed; the largest was a C5.4 event. Activity increased once more on March 28 with a long‑duration M1.3 flare from active region 14405. The week concluded with low activity on March 29, when the largest event was a C2.1 flare. Overall, active region 14405 was the most productive during this period, generating nine C‑class flares and one M‑class flare. Several CMEs were associated with these events, but none had Earth‑directed components.