[ips-sf] ASWFC Summary Forecast for 19 December - issued 2314UT/18-Dec-2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

On UT day 19-Dec solar activity is expected to be R0. S0 solar
radiation storm conditions are expected. The solar wind speed is
expected to be strong with a declining trend as the recent influence
of a coronal hole wind stream slowly abates. G0 geomagnetic conditions
are expected. HF radio propagation conditions are expected to be fair
to normal. Maximum usable frequencies in the Australian region are
expected to be 15% depressed to 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