URSIGRAM SYDNEY 04/0000UT OCTOBER 2025 GEOALERT SYD277 UGEOA 85303 51004 0000/ 4021/ 12041 21041 30041 99999 PLAIN MAGNETIC FORECAST: ACTIVE due to CORONAL HOLE BT Australian Space Weather Forecasting Centre Bureau of Meteorology ASWFC at bom.gov.au www.bom.gov.au | www.sws.bom.gov.au