URSIGRAM SYDNEY 30/0000UT OCTOBER 2023 GEOALERT SYD303 UGEOA 85303 31030 0000/ 4021/ 11301 21302 30301 99999 PLAIN MAGNETIC FORECAST: ACTIVE due to CORONAL HOLE BT Australian Space Weather Forecasting Centre Bureau of Meteorology ASWFC at bom.gov.au www.bom.gov.au | www.sws.bom.gov.au