[ips-sf] ASWFC Summary Forecast for 19 July - issued 2330UT/18-Jul-2023 [SEC=OFFICIAL]

[rwc]

Solar activity on UT day 19-Jul is expected to be at the R1 level,
with a chance of R2. The solar wind speed is expected to be moderate.
G0 geomagnetic conditions are expected on 19-Jul. G2-G3 conditions are
expected on 20-Jul and G1-G2 conditions with a chance of G3 are
expected on 21-Jul due to anticipated impacts from CMEs first observed
on 17-Jul and 18-Jul. An S1 proton event is currently ongoing and
there is a chance of an S2 event later in the UT day. Maximum usable
frequencies (MUFs) are expected to be near predicted monthly values to
15% enhanced in the northern Australian region. HF communication
conditions are expected to be normal at mid to low latitudes and poor
at high latitudes. 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