URSIGRAM SYDNEY 31/0000UT DECEMBER 2023 GEOALERT SYD365 UGEOA 85303 31231 0000/ 4021/ 11311 20311 30311 99999 PLAIN MAGNETIC FORECAST: QUIET BT Australian Space Weather Forecasting Centre Bureau of Meteorology ASWFC at bom.gov.au www.bom.gov.au | www.sws.bom.gov.au