[ips-sf] ASWFC Summary Forecast for 12 November - issued 0724UT/12-Nov-2023 [SEC=OFFICIAL]

[rwc]

The expected solar wind shock from a CME observed on 09-Nov arrived at
12/0531UT. The post shock arrival enhancement of the solar wind
parameters is currently not as strong as expected, with the north
south component of the interplanetary magnetic field currently only
sustaining a mildly (-5nT) southward orientation. The Australian
regional geomagnetic field is now expected to increase to G1-Minor,
with the chance of G2-Moderate conditions later tonight. Local night
HF communication conditions are expected to be degraded. If overnight
geomagnetic storm activity eventuates, the southern Australian region
ionospheric frequencies of support are likely to be lower than normal
on Monday morning. At this stage northern Australian region
ionospheric frequencies of support for HF communications are expected
to remain near normal.

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