10MeV (S1) Proton/PCA Event Ended 16 12 2023 0045UT 10MeV Maximum proton flux of 1.39E+01 PFU (S1) observed at 16 12 2023 0015UT Australian Space Weather Forecasting Centre Bureau of Meteorology ASWFC at bom.gov.au www.bom.gov.au | www.sws.bom.gov.au