[ips-sf] SWS Summary Forecast for 23 December - issued 2332UT/22-Dec-2016 [SEC=UNCLASSIFIED]

[rwc]

Solar flare activity was very low over the last 24 hours. As
anticipated, solar wind stream stayed strong due to the continued
coronal hole effect. This coronal hole effect is expected to keep the
solar wind stream strong for the next three days (23 to 25 December).
Very low levels of solar activity may be expected for the next three
days (23, 24 and 25 December). The geomagnetic activity remained
enhanced today (22 December) due to the coronal hole effect. The
enhancements were below the expected levels as the Bz component of IMF
did not stay southwards for long enough periods. The continued effect
of the coronal hole still has potential to raise geomagnetic activity
to minor storm levels on 23 December. Mostly quiet to active levels of
geomagnetic activity may be expected on 23 and 24 December with some
possibility of isolated minor storm periods on 23 December. Minor to
moderate depressions in MUFs were observed today (22 December UT).
Nearly similar HF conditions may be expected on 23 and 24 December.
MUFs are expected to stay mostly near predicted monthly values on 25
December.

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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