10MeV (S2) Proton/PCA Event Ended 20 01 2026 0845UT 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