URSIGRAM SYDNEY 15/0000UT APRIL 2023 GEOALERT SYD105 UGEOA 85303 30415 0000/ 4021/ 12151 20151 30151 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