URSIGRAM SYDNEY 28/0000UT DECEMBER 2023 GEOALERT SYD362 UGEOA 85303 31228 0000/ 4021/ 11281 21281 30281 99999 PLAIN MAGNETIC FORECAST: ACTIVE due to CORONAL MASS EJECTION BT Australian Space Weather Forecasting Centre Bureau of Meteorology ASWFC at bom.gov.au www.bom.gov.au | www.sws.bom.gov.au