URSIGRAM SYDNEY 27/0000UT SEPTEMBER 2023 GEOALERT SYD270 UGEOA 85303 30927 0000/ 4021/ 12271 20271 30271 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