Solar activity during the past week ranged from low to moderate. March 11 marked the quietest day, with the X‑ray flux remaining in the B‑class range and only minor C‑class flaring. Activity increased significantly by March 13, the most active day, producing an M1.2 flare - the strongest of the week - along with C8.9 and long‑duration C8.0 flares and several additional C-class events. A second M‑class flare, an M1.0, was produced on March 15 by active region 14392 located in the southeast quadrant of the solar disk. In total, 37 C‑class and 2 M‑class flares were produced. No Earth‑directed CMEs were detected.
Helioseismic maps of the far hemisphere reveal multiple active regions that rotated onto the far side after crossing the west limb. These regions exhibited low to moderate activity while on the Earth‑facing side of the solar disk. If they do not decay while on the far side, one of them is expected to rotate back into view on March 21.
At the time of preparing this report, an M2.7 flare was detected on March 16 from active region 14394, which also launched a CME directed toward Earth. The CME is forecast to arrive on March 19 and has the potential to generate auroral activity.
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