[ips-sf] ASWFC Summary Forecast for 21 April - issued 2316UT/20-Apr-2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

On UT day 21-Apr solar activity is expected to be R0-R1. S0 solar
radiation storm conditions are expected. The solar wind speed is
expected to gradually increase during 21-24 Apr to strong due to a
solar coronal hole wind stream. G0, chance G1 geomagnetic conditions
are expected, with an increase in geomagnetic activity during 22-23
Apr to G1, chance G2. HF radio propagation conditions are expected to
be fair to normal. Maximum usable frequencies in the Australian region
are generally expected to be near predicted monthly values, with
southern Australian region HF conditions becoming degraded and with
15-20% MUF depressions at times during the interval 22-24 Apr.

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