10MeV (S1) Proton/PCA Event Ended 05 09 2026 2110UT 10MeV Maximum proton flux of 1.78E+01 PFU (S1) observed at 05 09 2026 1645UT Australian Space Weather Forecasting Centre Bureau of Meteorology ASWFC at bom.gov.au www.bom.gov.au | www.sws.bom.gov.au