[ips-sf] ASWFC Summary Forecast for 01 June - issued 0916UT/01-Jun-2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

An anticipated CME impact has been observed earlier than expected and
produced G4 geomagnetic conditions at the planetary level and G1
geomagnetic conditions in the Australian region. Further periods of
planetary G4 conditions are expected. Solar activity on UT day 01-Jun
is expected to be at R1-R2 levels. S2-S3 solar radiation storm
conditions are expected. The solar wind speed is expected to be very
strong. HF radio propagation conditions are expected to be mostly fair
to poor. Maximum usable frequencies (MUFs) in the Australian region
are expected to be near predicted monthly values to 15% depressed.
Shortwave fadeouts are probable.

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