Solar activity fluctuated sharply over the past week. The period opened at high levels on March 30 with a long‑duration X1.4 flare from active region 14405, located in the southeastern quadrant of the visible disk. Activity then dropped markedly on March 31, with the strongest event reaching only C1.5 before declining into the B‑class range. Conditions rose again on April 1 as multiple high‑intensity C‑class flares were recorded, the largest being a C8.1 event. From April 2 through April 4, activity remained at moderate to high levels, driven by several M‑class and numerous strong C‑class flares. The largest daily events were M3.5, M1.3, and M7.5 on April 2, 3, and 4, respectively. Activity decreased once more on April 5, with a C3.8 flare as the day’s peak.
In summary, April 4 stood out as the most active day of the
week. Active region 14409 dominated the activity, producing six M‑class flares
and roughly 50 C‑class flares. Several CMEs were detected by coronagraphs
throughout the week, but none were assessed to have significant Earth‑directed
impacts.
Helioseismic maps of the far side show several active
regions currently present. One of them—an active region from the previous
rotation—appears to have a high likelihood of returning to the visible
hemisphere around April 11.
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