[ips-sf] ASWFC Summary Forecast for 01 December - issued 1214UT/01-Dec-2023 [SEC=OFFICIAL]

[rwc]

On UT day 01-Dec solar activity is expected to be mostly R0-R1, with
the chance of an isolated R2 flare. Two separate CME signatures have
been observed in the solar wind data, with the first shock observed at
30/2333UT and the second at 01/0850UT. The latter indicates the
arrival of the recent halo R2/CME event, with planetary G3 geomagnetic
conditions currently underway at time of writing. The solar wind speed
is currently strong, and is expected to remain enhanced into 02-Dec.
HF radio communication conditions are expected to be moderately
degraded into 02-Dec. Maximum usable frequencies (MUFs) are expected
to be depressed by 20% from late in the UT day on 01-Dec and into
02-Dec. Aurorae are currently visible in southern Australian regions
at time of writing.

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