[ips-sf] SWS Summary Forecast for 10 December - issued 2342UT/09-Dec-2020

[rwc]

Solar activity is expected to be very low with a chance of C-class
flares during the next UT day, 10 December. The solar wind speed is
expected to increase up to 600 km/s or higher levels on 10 December,
when the 7 December CME will arrive. Global geomagnetic activity is
expected to increase to active and minor storm levels due to combined
effects of the coronal hole and CME; isolated major storm levels are
also possible. Degraded HF propagation conditions are expected due to
predicted increase in geomagnetic activity. Auroras may be observed
during local nighttime hours in Tasmania and on the coastline of
Victoria. There is a chance to observe aurora on the southwest coast
of Western Australia. Aurora alerts will follow when significant
geomagnetic activity actually occurs.

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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