URSIGRAM SYDNEY 16/0000UT OCTOBER 2023 GEOALERT SYD289 UGEOA 85303 31016 0000/ 4021/ 11161 20161 30161 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