An onboard EVE flare campaign was triggered on April 2 by an M-class flare. That flare remains the highest soft X-ray activity observed by EVE since Artemis II launched on April 1. After the flare campaign completed, multiple C-class and 2 smaller M-class flares also occurred. These smaller flares were not large enough to trigger the autonomous flare campaign.


The EUV irradiance increased around the time of the X-ray flare and quickly returned to expected levels. The baseline (non-flaring) EUV irradiance will likely decrease as the Artemis II mission continues. The sun is showing relatively large 27-day solar rotational variation in the EUV irradiance consistent with high activity. The previous solar rotation minimum occurred about 2 weeks prior to the April 2 flare, so the daily average irradiances should begin decreasing soon. However, there remains continued potential for flare-related increases. The NASA M2M forecasting team will be watching to ensure the safety of the Artemis mission.







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