URSIGRAM SYDNEY 04/0000UT DECEMBER 2025 GEOALERT SYD338 UGEOA 85303 51204 0000/ 4021/ 12041 22042 30041 99999 PLAIN MAGNETIC FORECAST: MINOR STORM 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