URSIGRAM SYDNEY 21/0000UT SEPTEMBER 2023 GEOALERT SYD264 UGEOA 85303 30921 0000/ 4021/ 11211 21212 30211 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