[ips-sf] IPS Summary Forecast for 29 December - issued 2338UT/28-Dec-2015 [SEC=UNCLASSIFIED]

[rwc]

Solar activity was at moderate levels on UT day 28 December. Region
2473(S22W19) produced a C8 (0028UT) and an M1.8 flare (1245 UT). The
M1.8 flare came with a coronal mass ejection that seems to have a
significant earthward directed component. It is expected to arrive on
30 December. Low levels of solar activity may be expected on 29
December with the possibility of M-class event and small possibility
of isolated X-class event. Quiet to unsettled levels of geomagnetic
activity were observed on UT day 28 December. Nearly similar
conditions may be expected on 29 December. Activity levels may rise to
major storm levels on 30 December and then gradually decline to minor
storm through to unsettled levels on 31 December due to an expected
impact from the CME that was observed along with the M1 flare on 28
December. Aurora sightings are likely on 30 and 31 December. Observed
MUF's for the UT day 28 Dec were mostly near monthly values. Nearly
similar HF conditions may be expected on 29 December. Minor to
significant degradations in HF conditions and depressions in MUFs may
be expected on 30 and 31 December due to expected rise in geomagnetic
activity levels on these days.

Space Weather Services              email: asfc at ips.gov.au
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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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