[ips-sf] ASWFC Summary Forecast for 20 May - issued 2321UT/19-May-2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

Solar activity on UT day 20-May is expected to be at R0-R1 levels. S0
solar radiation storm conditions are expected. The solar wind speed is
expected to be moderate to strong. G0-G1 geomagnetic conditions are
expected due to coronal hole high speed wind stream effects. HF radio
propagation conditions are expected to be normal to fair. Maximum
usable frequencies (MUFs) in the Australian region are expected to be
near predicted monthly values to 15% depressed. 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