[ips-sf] ASWFC Summary Forecast for 21 December - issued 2322UT/20-Dec-2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

Solar activity on UT day 20-Dec is expected to be at R0, with a chance
of R1. S0 solar radiation storm conditions are expected. The solar
wind speed is expected to be Moderate over the UT day. G0, chance G1
geomagnetic conditions are expected. HF radio propagation conditions
are expected to be normal across the Australian region. Maximum usable
frequencies (MUFs) in the Australian region are expected to be near
predicted monthly values.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au