URSIGRAM SYDNEY 17/0000UT AUGUST 2023 GEOALERT SYD229 UGEOA 85303 30817 0000/ 4021/ 11171 20171 30171 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