An M4 flare (R1 – Minor Radio Blackout) occurred 28 March, 2022, at 7:29 am EDT (1129 UTC). The flare source location was a magnetically complex sunspot group, Region 2975 (location N13W05 at 28/1200 UTC). The flare was associated with a solar proton event that reached S1 (Minor) storm levels at 9:25 am EDT (1325 UTC). Additionally, radio frequency signatures were detected (Type II and IV Sweeps) suggestive of a coronal mass ejection (CME). Recent coronagraph imagery from the NASA/SOHO LASCO instrument verifies a CME occurred, and we are awaiting further imagery to properly conduct an in-depth analysis to determine the possibility of any Earth-directed component. Please continue to monitor and follow our SWPC webpage for the latest information and updates about this activity.