[ips-sf] ASWFC Summary Forecast for 11 October - issued 1546UT/10-Oct-2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

A CME shock arrival has been observed in the solar wind at 10/1450UT.
The solar wind speed increased from 460km/sec to 775km/sec. The
north-south component of the interplanetary magnetic field became
southward falling to -25nT post shock arrival and is currently
fluctuating between north and south in orientation. An increase in
geomagnetic activity is expected for the remainder of 10-Oct. On UT
day 10-Oct solar activity is expected to be R1-R3. The solar wind is
expected to become strong. G3-G4 geomagnetic conditions are expected
later in the UT day. HF radio communication conditions are expected to
become degraded with the onset of the geomagnetic activity. Maximum
usable frequencies are expected to be near predicted values to 30%
depressed. S1-S2 solar radiation storm conditions are expected with a
chance for S3. Auroras may be seen at high to middle latitudes during
local night hours. Shortwave fadeouts are probable.

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