[ips-sf] ASWFC Summary Forecast for 23 December - issued 2314UT/22-Dec-2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

Solar activity on UT day 23-Dec is expected to be at the R0-R1 level.
S0 solar radiation storm conditions are expected. The solar wind speed
is expected to be very strong due to a solar coronal hole wind stream.
G0-G1 geomagnetic conditions are expected. HF radio propagation
conditions are expected to be fair to normal. Maximum usable
frequencies (MUFs) in the Australian region are expected to be 10-15%
depressed to near predicted monthly values. Isolated minor shortwave
fadeouts are possible.

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