URSIGRAM SYDNEY 12/0000UT SEPTEMBER 2023 GEOALERT SYD255 UGEOA 85303 30912 0000/ 4021/ 11121 20121 30121 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