10MeV (S1) Proton/PCA Event Ended 21 01 2026 1640UT 10MeV Maximum proton flux of 3.70E+04 PFU (S4) observed at 19 01 2026 1915UT Australian Space Weather Forecasting Centre Bureau of Meteorology ASWFC at bom.gov.au www.bom.gov.au | www.sws.bom.gov.au