[ips-sf] ASWFC Summary Forecast for 22 September - issued 2325UT/21-Sep-2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

Solar activity on UT day 22-Sep is expected to be R0,chance R1. S0
solar radiation storm conditions are expected. The solar wind speed is
expected to be light increasing to moderate late in the UT day when
the Earth is expected to enter a coronal hole wind stream. G0
geomagnetic conditions are expected with chance of G1 conditions late
in the UT day. HF radio propagation conditions are expected to be
mostly normal with fair conditions possible during local night hours.
Maximum usable frequencies in the Australian region are expected to
near predicted 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