[ips-sf] ASWFC Summary Forecast for 15 December - issued 2328UT/14-Dec-2023 [SEC=OFFICIAL]

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Solar activity on UT day 15-Dec is expected to be at R1-R2 levels. A
solar region in the northwest solar quadrant has produced R2 and R3
flare/CME activity on 14-Dec. The solar wind speed is expected to be
light to moderate on 15-Dec, with the chance of reaching strong speeds
on 17-Dec due to component arrivals of the CMEs observed on 14-Dec. G0
geomagnetic conditions are expected, with a mild increase in
geomagnetic activity expected on 16-Dec due to a recent faint CME. A
further increase in geomagnetic activity is expected on 17-Dec, with
G1 periods expected. HF radio communication conditions are expected to
be normal on 15-Dec. Maximum usable frequencies (MUFs) are expected to
be near predicted monthly values. Degraded conditions for the southern
Australian region are expected 17-18 Dec. Isolated 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